1
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Huang M, Zhang C, Hou F, Yang H, Ding N. Stabilization and strengthening effects of filamentous nanocellulose in the foam forming of quartz paper. Int J Biol Macromol 2024; 263:130251. [PMID: 38368991 DOI: 10.1016/j.ijbiomac.2024.130251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/31/2024] [Accepted: 02/15/2024] [Indexed: 02/20/2024]
Abstract
Compared with traditional papermaking, foam forming is a new papermaking technology that uses foam instead of water to disperse fibres, which can effectively solve the problem of poor evenness of ceramic paper, but the instability of foam itself affects the application of foam forming technology. Herein, a highly stable foaming agent for foam forming technology was prepared via physical reaction of lauryl dimethyl amine oxide (OB-2) with filamentous nanocellulose (cellulose nanofiber (CNF-C) and bacterial cellulose (BC)). Then, the quartz paper was prepared by foam forming technology. Firstly, hydrogen bond interactions between hydroxyl groups of the filamentous nanocellulose and hydrophilic moieties on OB-2 enabled the formation of a 3D nanonetwork layer on the surface of the bubble, which extended the half-life of the bubble and effectively prevented the bubble from bursting or coalescing. Then, the foam was extruded and cracked, and the filamentous nanocellulose was retained on the quartz fibres to prepare filamentous nanocellulose/quartz fibre paper by foam forming technology. The quartz paper exhibited excellent evenness and mechanical properties. In conclusion, the research of foam forming technology is of great significance to the application and development of special paper.
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Affiliation(s)
- Mengle Huang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Chunhui Zhang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Fuqing Hou
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huikang Yang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Nengxin Ding
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
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2
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Tadi R, Green B, Curwen T, Clegg PS. Long term water trapping in Pickering emulsions undergoing compositional ripening. SOFT MATTER 2023. [PMID: 38018169 DOI: 10.1039/d3sm00856h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
One approach to achieving low-calorie foods is to substitute regions of high-calorie content with water droplets, forming water-in-oil emulsions. However, in complex food systems consisting of multiple species of dispersed phases, compositional ripening may occur in which the emulsified water undergoes mass transfer to droplets filled with a species that is less soluble in the continuous phase, for example sugar. Here we present two model systems and use them to study compositional ripening for water-in-oil Pickering emulsions. Water-in-dodecane and water-in-tributyrin emulsions stabilised by PMMA particles were prepared and combined with similar emulsions that included sugar in the water. We use confocal microscopy as a function of time combined with particle tracking to explore how these systems evolve in time. For dodecane, as the system evolves, the pure water droplets appear to crumple due to the loss of water; in extreme cases, they eventually 'explode'. Simultaneously, the sugar-filled droplets expand and slowly coalesce. Evidently, our interfacial coating of particles is unable to suppress compositional ripening. In contrast, pure water droplets in tributyrin crumple into small stable structures, potentially retaining water. We show that decreasing the concentration of the sugar solution also decreases the rate of change of water droplet size for both oils. Observations of droplet 'explosions' confirm that the driving force can overcome the trapping of the particles at the interface, in contrast to the case of Ostwald ripening. However the crumpled states in the tributyrin system provide some indication that this effect can be overcome.
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Affiliation(s)
- Raj Tadi
- School of Physics and Astronomy, University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD, UK.
| | - Beth Green
- Mondelēz International, Reading Science Centre, Whiteknights Campus, Pepper Lane, Reading, RG6 6LA, UK
| | - Thomas Curwen
- Mondelēz International, Reading Science Centre, Whiteknights Campus, Pepper Lane, Reading, RG6 6LA, UK
| | - Paul S Clegg
- School of Physics and Astronomy, University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD, UK.
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3
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Paknahad AA, Zalloum IO, Karshafian R, Kolios MC, Tsai SSH. Microfluidic nanobubbles: observations of a sudden contraction of microbubbles into nanobubbles. SOFT MATTER 2023. [PMID: 37386867 DOI: 10.1039/d3sm00380a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Microfluidic devices are often utilized to generate uniform-size microbubbles. In most microfluidic bubble generation experiments, once the bubbles are formed the gas inside the bubbles begin to dissolve into the surrounding aqueous environment. The bubbles shrink until they attain an equilibrium size dictated by the concentration and type of amphiphilic molecules stabilizing the gas-liquid interface. Here, we exploit this shrinkage mechanism, and control the solution lipid concentration and microfluidic geometry, to make monodisperse bulk nanobubbles. Interestingly, we make the surprising observation of a critical microbubble diameter above and below which the scale of bubble shrinkage dramatically changes. Namely, microbubbles generated with an initial diameter larger than the critical diameter shrinks to a stable diameter that is consistent with previous literature. However, microbubbles that are initially smaller than the critical diameter experience a sudden contraction into nanobubbles whose size is at least an order-of-magnitude below expectations. We apply electron microscopy and resonance mass measurement methods to quantify the size and uniformity of the nanobubbles, and probe the dependence of the critical bubble diameter on the lipid concentration. We anticipate that further analysis of this unexpected microbubble sudden contraction regime can lead to more robust technologies for making monodisperse nanobubbles.
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Affiliation(s)
- Ali A Paknahad
- Department of Mechanical and Industrial Engineering, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, Toronto, Ontario M5B 1W8, Canada
| | - Intesar O Zalloum
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, Toronto, Ontario M5B 1W8, Canada
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada.
| | - Raffi Karshafian
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, Toronto, Ontario M5B 1W8, Canada
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada.
| | - Michael C Kolios
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, Toronto, Ontario M5B 1W8, Canada
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada.
| | - Scott S H Tsai
- Department of Mechanical and Industrial Engineering, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, Toronto, Ontario M5B 1W8, Canada
- Graduate Program in Biomedical Engineering, Toronto Metropolitan University, Toronto M5B 2K3, Canada.
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4
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Honaryar H, Amirfattahi S, Niroobakhsh Z. Associative Liquid-In-Liquid 3D Printing Techniques for Freeform Fabrication of Soft Matter. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206524. [PMID: 36670057 DOI: 10.1002/smll.202206524] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Shaping soft materials into prescribed 3D complex designs has been challenging yet feasible using various 3D printing technologies. For a broader range of soft matters to be printable, liquid-in-liquid 3D printing techniques have emerged in which an ink phase is printed into 3D constructs within a bath. Most of the attention in this field has been focused on using a support bath with favorable rheology (i.e., shear-thinning behavior) which limits the selection of materials, impeding the broad application of such techniques. However, a growing body of work has begun to leverage the interaction or association of the two involved phases (specifically at the liquid-liquid interface) to fabricate complex constructs from a myriad of soft materials with practical structural, mechanical, optical, magnetic, and communicative properties. This review article has provided an overview of the studies on such associative liquid-in-liquid 3D printing techniques along with their fundamentals, underlying mechanisms, various characterization techniques used for ensuring the structural stability, and practical properties of prints. Also, the future paths with the potential applications are discussed.
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Affiliation(s)
- Houman Honaryar
- Division of Energy, Matter, and Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO, 64110, USA
| | - Saba Amirfattahi
- Division of Energy, Matter, and Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO, 64110, USA
| | - Zahra Niroobakhsh
- Division of Energy, Matter, and Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO, 64110, USA
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5
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Destabilization of Pickering emulsions by interfacial transport of mutually soluble solute. J Colloid Interface Sci 2023; 633:166-176. [PMID: 36442288 DOI: 10.1016/j.jcis.2022.10.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 11/19/2022]
Abstract
HYPOTHESIS Pickering emulsions (PEs) once formed are highly stable because of very high desorption energies (∼107 kBT) associated with particles adsorbed to the interfaces. The destabilization of PEs is required in many instances for recovery of valuable chemicals, products and active compounds. We propose to exploit interfacial instabilities develop by the addition of different types of solutes to PEs as a route to engineer their destabilization. EXPERIMENTS PEs stabilized by (i) spherical particles, (ii) non-spherical particles, (iii) oppositely charged particle-particle mixtures, and (iv) oppositely charged particle-polyelectrolyte mixtures are formulated. Different types of solutes are added to these highly stable PEs and the macroscopic as well as microscopic changes induced in the PEs is recorded by visual observation and bright field optical microscopy. FINDINGS Our results point to a simple yet robust method to induce destabilization of PEs by transiently perturbing the oil-water interface by transport of a mutually soluble solute across the interface. The generality of the method is demonstrated for different kind of solutes and stabilizers including particles of different sizes (nm to µm), shapes (sphere, spheroids, spherocylinders) and types (polystyrene, metal oxides). The method works for both oil-in-water (o/w) and water-in-oil (w/o) PEs with different kinds of non-polar solvents as oil-phase. However, the method fails when the solute is insoluble in one of the phases of PEs. The study opens up a new approach to destabilization of particle stabilized emulsions.
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6
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Saha S, Luckham PF, Garbin V. Non-linear response of colloid monolayers at high-frequency probed by ultrasound-driven microbubble dynamics. J Colloid Interface Sci 2023; 630:984-993. [DOI: 10.1016/j.jcis.2022.10.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 09/30/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022]
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7
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Zalloum IO, Paknahad AA, Kolios MC, Karshafian R, Tsai SSH. Controlled Shrinkage of Microfluidically Generated Microbubbles by Tuning Lipid Concentration. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13021-13029. [PMID: 36260341 DOI: 10.1021/acs.langmuir.2c01439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Monodisperse microbubbles with diameters less than 10 μm are desirable in several ultrasound imaging and therapeutic delivery applications. However, conventional approaches to synthesize microbubbles, which are usually agitation-based, produce polydisperse bubbles that are less desirable because of their heterogeneous response when exposed to an ultrasound field. Microfluidics technology has the unique advantage of generating size-controlled monodisperse microbubbles, and it is now well established that the diameter of microfluidically made microbubbles can be tuned by varying the liquid flow rate, gas pressure, and dimensions of the microfluidic channel. It is also observed that once the microbubbles form, the bubbles shrink and eventually stabilize to a quasi-equilibrium diameter, and that the rate of stabilization is related to the lipid solution. However, how the lipid solution concentration affects the degree of bubble shrinkage, and the stable size of microbubbles, has not been thoroughly examined. Here, we investigate whether and how the lipid concentration affects the degree of microbubble shrinkage. Namely, we utilize a flow-focusing microfluidic geometry to generate monodisperse bubbles, and observe the effect of gas composition (2.5, 1.42, and 0.17 wt % octafluoropropane in nitrogen) and lipid concentration (1-16 mg/mL) on the degree of microbubble shrinkage. For the lipid system and gas utilized in these experiments, we observe a monotonic increase in the degree of microbubble shrinkage with decreasing lipid concentration, and no dependency on the gas composition. We hypothesize that the degree of shrinkage is related to lipid concentration by the self-assembly of lipids on the gas-liquid interface during bubble generation and subsequent lipid packing on the interface during shrinkage, which is arrested when a maximum packing density is achieved. We anticipate that this approach for creating and tuning the size of monodisperse microbubbles will find utility in biomedical applications, such as contrast-enhanced ultrasound imaging and ultrasound-triggered gene delivery.
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Affiliation(s)
- Intesar O Zalloum
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, 209 Victoria Street, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, 209 Victoria Street, Toronto, Ontario M5B 1W8, Canada
| | - Ali A Paknahad
- Department of Mechanical and Industrial Engineering, Toronto Metropolitan University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, 209 Victoria Street, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, 209 Victoria Street, Toronto, Ontario M5B 1W8, Canada
| | - Michael C Kolios
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, 209 Victoria Street, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, 209 Victoria Street, Toronto, Ontario M5B 1W8, Canada
| | - Raffi Karshafian
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, 209 Victoria Street, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, 209 Victoria Street, Toronto, Ontario M5B 1W8, Canada
| | - Scott S H Tsai
- Department of Mechanical and Industrial Engineering, Toronto Metropolitan University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Toronto Metropolitan University and St. Michael's Hospital, 209 Victoria Street, Toronto, Ontario M5B 1T8, Canada
- Keenan Research Centre for Biomedical Science, Unity Health Toronto, 209 Victoria Street, Toronto, Ontario M5B 1W8, Canada
- Graduate Program in Biomedical Engineering, Toronto Metropolitan University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
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8
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Chen C, Xi H, Lin X, Wang Y, Li Z. Study on modified MXene to increase the stability and decontamination properties of biomass-based antifreeze foam detergent. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Yeo SJ, Oh MJ, Kim Y, Weon BM, Kwon SJ, Yoo PJ. Controlled synthesis of solid-shelled non-spherical and faceted microbubbles. NANOSCALE 2022; 14:12581-12588. [PMID: 36039694 DOI: 10.1039/d2nr03741f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The ability to control the shape of hollow particles (e.g., capsules or bubbles) holds great promise for enhancing the encapsulation efficiency and mechanical/optical properties. However, conventional preparation methods suffer from a low yield, difficulty in controlling the shape, and a tedious production process, limiting their widespread application. Here, we present a method for fabricating polyhedral graphene oxide (GO)-shelled microbubbles with sharp edges and vertices, which is based on the microfluidic generation of spherical compound bubbles followed by shell deformation. Sphere-to-polytope deformation is a result of the shell instability due to gradual outward gas transport, which is dictated by Laplace pressure across the shell. The shape-variant behaviours of the bubbles can also be attributed to the compositional heterogeneity of the shells. In particular, the high degree of control of microfluidic systems enables the formation of non-spherical bubbles with various shapes; the structural motifs of the bubbles are easily controlled by varying the size and thickness of the mid-shell in compound bubbles, ranging from tetrahedra to octahedra. The strategy presented in this study provides a new route for fabricating 3D structured solid bubbles, which is particularly advantageous for the development of high-performance mechanical or thermal material applications.
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Affiliation(s)
- Seon Ju Yeo
- Department of Nature-Inspired System and Application, Korea Institute of Machinery & Materials (KIMM), Daejeon 34103, Republic of Korea
| | - Min Jun Oh
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Youngsoo Kim
- Department of Nature-Inspired System and Application, Korea Institute of Machinery & Materials (KIMM), Daejeon 34103, Republic of Korea
| | - Byung Mook Weon
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Seok Joon Kwon
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Pil J Yoo
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
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10
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Plohl G, Jannet M, Planchette C. Unjamming strongly compressed rafts: Effects of the compression direction. Phys Rev E 2022; 106:034903. [PMID: 36266893 DOI: 10.1103/physreve.106.034903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 09/01/2022] [Indexed: 06/16/2023]
Abstract
We experimentally study the unjamming dynamics of strongly compressed particle rafts confined between two fixed walls and two movable barriers. The back barrier is made of an elastic band, whose deflection indicates the local stress. The front barrier is pierced by a gate, whose opening triggers local unjamming. Prior to gate opening, the rafts are quasistatically compressed by moving only one of the two barriers, in the vicinity of which folds form. Using high-speed imaging, we follow the raft relaxation with folded, jammed, and unjammed areas and measure the velocity fields inside and outside the confined domain. Two very different behaviors develop. For rafts compressed by the back barrier, only partial unjamming occurs. At the end of the process, many folds remain and the back stress does not relax. The flow develops mostly along the compression axis and the particles passing the gate form a dense raft whose width is the gate width. For rafts compressed at the front, quasitotal unjamming is observed. Almost no folds persist and only minimal stress remains, if any. The particles flow along the compression axis but also normally to it and form a rather circular and not dense assembly. Both the force chain network orientation and the initial fold location could cause the unjamming difference. Other effects, such as a different pressure field or simple steric hindrance, cannot be excluded.
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Affiliation(s)
- Gregor Plohl
- Institute of Fluid Mechanics and Heat Transfer, Graz University of Technology, Graz 8010, Austria
| | - Mathieu Jannet
- Institute of Fluid Mechanics and Heat Transfer, Graz University of Technology, Graz 8010, Austria
| | - Carole Planchette
- Institute of Fluid Mechanics and Heat Transfer, Graz University of Technology, Graz 8010, Austria
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11
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Gouveia B, Kim Y, Shaevitz JW, Petry S, Stone HA, Brangwynne CP. Capillary forces generated by biomolecular condensates. Nature 2022; 609:255-264. [PMID: 36071192 DOI: 10.1038/s41586-022-05138-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 07/25/2022] [Indexed: 12/21/2022]
Abstract
Liquid-liquid phase separation and related phase transitions have emerged as generic mechanisms in living cells for the formation of membraneless compartments or biomolecular condensates. The surface between two immiscible phases has an interfacial tension, generating capillary forces that can perform work on the surrounding environment. Here we present the physical principles of capillarity, including examples of how capillary forces structure multiphase condensates and remodel biological substrates. As with other mechanisms of intracellular force generation, for example, molecular motors, capillary forces can influence biological processes. Identifying the biomolecular determinants of condensate capillarity represents an exciting frontier, bridging soft matter physics and cell biology.
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Affiliation(s)
- Bernardo Gouveia
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA
| | - Yoonji Kim
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | | | - Sabine Petry
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Howard A Stone
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ, USA.
| | - Clifford P Brangwynne
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA. .,The Howard Hughes Medical Institute, Princeton, NJ, USA.
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12
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Gas marbles: ultra-long-lasting and ultra-robust bubbles formed by particle stabilization. Front Chem Sci Eng 2022. [DOI: 10.1007/s11705-022-2180-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Influence of nano-aluminum hydroxide on foam properties of the mixtures of hydrocarbon and fluorocarbon surfactants. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Zhang X, Jacobeen S, Zhang Q, Khau B, Yunker P, Qi HJ, Bhamla S, Russo PS. Reshaping sub-millimetre bubbles from spheres to tori. SOFT MATTER 2022; 18:4660-4666. [PMID: 35543353 PMCID: PMC9247010 DOI: 10.1039/d2sm00173j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Shape-changing objects are prized for applications ranging from acoustics to robotics. We report sub-millimetre bubbles that reversibly and rapidly change not only their shape but also their topological class, from sphere to torus, when subjected to a simple pressure treatment. Stabilized by a solid-like film of nanoscopic protein "particles", the bubbles may persist in toroidal form for several days, most of them with the relative dimensions expected of Clifford tori. The ability to cross topological classes reversibly and quickly is enabled by the expulsion of protein from the strained surfaces in the form of submicron assemblies. Compared to structural modifications of liquid-filled vesicles, for example by slow changes in solution osmolality, the rapid inducement of shape changes in bubbles by application of pressure may hasten experimental investigations of surface mechanics, even as it suggests new routes to lightweight materials with high surface areas.
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Affiliation(s)
- Xujun Zhang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
- Georgia Tech Polymer Network, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Shane Jacobeen
- School of Physics, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Qiang Zhang
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Brian Khau
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Peter Yunker
- School of Physics, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - H Jerry Qi
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Saad Bhamla
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Paul S Russo
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
- Georgia Tech Polymer Network, Georgia Institute of Technology, Atlanta, GA 30332, USA
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
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15
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Klebes J, Clegg P, Evans RML. Effects of orientational order on modulated cylindrical interfaces. Phys Rev E 2022; 105:064802. [PMID: 35854580 DOI: 10.1103/physreve.105.064802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Cylindrical interfaces occur in sheared or deformed emulsions and as biological or technological lipid monolayer or bilayer tubules. Like the corresponding spherical droplets and vesicles, these cylinderlike surfaces may host orientational order with n-fold rotational symmetry, for example in the positions of lipid molecules or of spherical nanoparticles. We examine how that order interacts with and induces shape modulations of cylindrical interfaces. While on spherical droplets 2n topological defects necessarily exist and can induce icosahedral droplet shapes, the cylindrical topology is compatible with a defect-free patterning. Nevertheless, once a modulation is introduced by a mechanism such as spontaneous curvature, nontrivial patterns of order, including ones with excess defects, emerge and have nonlinear effects on the shape of the tube. By examining the equilibrium energetics of the system analytically and with a lattice-based Markov chain Monte Carlo simulation, we predict low-temperature morphologies of modulated cylindrical interfaces hosting orientational order. A shape modulation induces a banded pattern of alternatingly isotropic and ordered interfacial material. Furthermore, cylindrical systems can be divided into type I, without defects, and type II, which go through a spectrum of defect states with up to 4n excess defects. The character of the curvature-induced shape transition from unmodulated to modulated cylinders is continuous or discontinuous accordingly.
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Affiliation(s)
- Jason Klebes
- School of Mathematics, University of Leeds, Leeds LS2 9JT, United Kingdom
- School of Physics and Astronomy, University of Edinburgh, James Clerk Maxwell Building, Peter Guthrie Tate Road, Edinburgh EH9 3FD, United Kingdom
| | - Paul Clegg
- School of Physics and Astronomy, University of Edinburgh, James Clerk Maxwell Building, Peter Guthrie Tate Road, Edinburgh EH9 3FD, United Kingdom
| | - R M L Evans
- School of Mathematics, University of Leeds, Leeds LS2 9JT, United Kingdom
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16
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Si Y, Li T, Clegg PS. Mixed Aqueous-and-Oil Foams via the Spinning Together of Separate Particle-Stabilized Aqueous and Oil Foams. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:4243-4249. [PMID: 35352955 PMCID: PMC9009175 DOI: 10.1021/acs.langmuir.1c03348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/16/2022] [Indexed: 05/31/2023]
Abstract
We describe an experimental technique for the production of foams comprised of bubbles in a continuous phase of balanced quantities of aqueous and oil phases. Initially, two highly stable foams are fabricated: one typically made from olive oil with bubbles stabilized using partially fluorinated particles and the other made from a mixture of water and propylene glycol with bubbles stabilized using partially hydrophobic particles. After a rough mixture is prepared, the final mixed foam is fabricated via spinning the components together; the spinning leads to the final foam being well-mixed and dry. Here the final mixed foams are presented in thin-film form. We show the locations and roles of the various components.
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Affiliation(s)
- Yuchen Si
- School
of Physics and Astronomy, University of
Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, U.K.
- Wenzhou
Institute, University of Chinese Academy
of Sciences, Wenzhou, Zhejiang 325001, P. R. China
| | - Tao Li
- Wenzhou
Institute, University of Chinese Academy
of Sciences, Wenzhou, Zhejiang 325001, P. R. China
| | - Paul S. Clegg
- School
of Physics and Astronomy, University of
Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, U.K.
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17
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Faisal D, Naser J. Numerical modelling of flow through nodes in foams within the “dry” limit in the presence of solid particles. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Cao M, Wu Y, Zhao M, Dai C, Yuan Y, Chen Z. Modulation of bubble flow resistance and surface fluidity :the effect of nanoparticle packing density at gas–liquid interface. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Zhang Y, Yang C, Yuan S, Yao X, Chao Y, Cao Y, Song Q, Sauret A, Binks BP, Shum HC. Effects of particle size on the electrocoalescence dynamics and arrested morphology of liquid marbles. J Colloid Interface Sci 2022; 608:1094-1104. [PMID: 34879587 DOI: 10.1016/j.jcis.2021.09.187] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 09/28/2021] [Accepted: 09/28/2021] [Indexed: 12/26/2022]
Abstract
HYPOTHESIS The coalescence of bare droplets when surface tension dominates always results in one larger spherical droplet. In contrast, droplets coated with particles may be stabilized into non-spherical structures after arrested coalescence, which can be achieved by different approaches, such as changing the particle surface coverage. The size of particles coating the initial liquid marbles can be used to control the coalescence dynamics and the resulting morphology of arrested droplets. EXPERIMENT We characterized the electrocoalescence of liquid marbles coated with particles ranging from hundred nanometers to hundred micrometers. The electrocoalescence was recorded using high-speed imaging. FINDINGS When the electrocoalescence initiates, particles jam and halt the relaxation of the marbles at different stages, resulting in four possible final morphologies that are characterized using the Gaussian curvature at the neck region. The four regimes are total coalescence, arrested puddle coalescence, arrested saddle coalescence, and non-coalescence. The coalescence is initiated at the center of the contact zone, independent of the particle size. Small particles show little resistance to the coalescence, while marbles coated by large particles demonstrate a viscous-like behavior, indicated by the growth of the liquid bridge and the damping. The present study provides guidelines for applications that involve the formulation of liquid marbles with complex morphologies.
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Affiliation(s)
- Yage Zhang
- Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Chentianyi Yang
- Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Shuai Yuan
- Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Xiaoxue Yao
- Department of Biomedical Engineering, Shenzhen University, Shenzhen 518000, China.
| | - Youchuang Chao
- Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Yang Cao
- Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Qingchun Song
- Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Alban Sauret
- Department of Mechanical Engineering, University of California, Santa Barbara, CA 93106, USA.
| | - Bernard P Binks
- Department of Chemistry, University of Hull, Hull HU6 7RX, UK.
| | - Ho Cheung Shum
- Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, China.
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20
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Metilli L, Storm M, Marathe S, Lazidis A, Marty-Terrade S, Simone E. Application of X-ray Microcomputed Tomography for the Static and Dynamic Characterization of the Microstructure of Oleofoams. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:1638-1650. [PMID: 35050635 PMCID: PMC8812118 DOI: 10.1021/acs.langmuir.1c03318] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Oleofoams are a novel, versatile, and biocompatible soft material that finds application in drug, cosmetic or nutraceuticals delivery. However, due to their temperature-sensitive and opaque nature, the characterization of oleofoams' microstructure is challenging. Here, synchrotron X-ray microcomputed tomography and radiography are applied to study the microstructure of a triglyceride-based oleofoam. These techniques enable non-destructive, quantitative, 3D measurements of native samples to determine the thermodynamic and kinetic behavior of oleofoams at different stages of their life cycle. During processing, a constant bubble size distribution is reached after few minutes of shearing, while the number of bubbles incorporated keeps increasing until saturation of the continuous phase. Low amounts of solid triglycerides in oleofoams allow faster aeration and a more homogeneous microstructure but lower thermodynamic stability, with bubble disproportionation and shape relaxation over time. Radiography shows that heating causes Ostwald ripening and coalescence of bubbles, with an increase of their diameter and sphericity.
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Affiliation(s)
- Lorenzo Metilli
- School
of Food Science and Nutrition, Food Colloids and Bioprocessing group, University of Leeds, Woodhouse Lane, Leeds LS29JT, U.K.
| | - Malte Storm
- Diamond
Light Source Ltd., Harwell Science and Innovation
Campus, Didcot OX110DE, U.K.
- Helmholtz-Zentrum
hereon, Max-Planck-Str 1, 21502 Geesthacht, Germany
| | - Shashidhara Marathe
- Diamond
Light Source Ltd., Harwell Science and Innovation
Campus, Didcot OX110DE, U.K.
| | - Aris Lazidis
- Nestlé
Product Technology Centre Confectionery, Haxby Road, York YO31 8TA, U.K.
| | | | - Elena Simone
- School
of Food Science and Nutrition, Food Colloids and Bioprocessing group, University of Leeds, Woodhouse Lane, Leeds LS29JT, U.K.
- Department
of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
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21
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Saha S, Pagaud F, Binks BP, Garbin V. Buckling versus Crystal Expulsion Controlled by Deformation Rate of Particle-Coated Air Bubbles in Oil. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:1259-1265. [PMID: 35023336 PMCID: PMC8793140 DOI: 10.1021/acs.langmuir.1c03171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/04/2022] [Indexed: 06/14/2023]
Abstract
Oil foams stabilized by crystallizing agents exhibit outstanding stability and show promise for applications in consumer products. The stability and mechanics imparted by the interfacial layer of crystals underpin product shelf life, as well as optimal processing conditions and performance in applications. Shelf life is affected by the stability against bubble dissolution over a long time scale, which leads to slow compression of the interfacial layer. In processing flow conditions, the imposed deformation is characterized by much shorter time scales. In practical situations, the crystal layer is therefore subjected to deformation on extremely different time scales. Despite its importance, our understanding of the behavior of such interfacial layers at different time scales remains limited. To address this gap, here we investigate the dynamics of single, crystal-coated bubbles isolated from an oleofoam, at two extreme time scales: the diffusion-limited time scale characteristic of bubble dissolution, ∼104 s, and a fast time scale characteristic of processing flow conditions, ∼10-3 s. In our experiments, slow deformation is obtained by bubble dissolution, and fast deformation in controlled conditions with real-time imaging is obtained using ultrasound-induced bubble oscillations. The experiments reveal that the fate of the interfacial layer is dramatically affected by the dynamics of deformation: after complete bubble dissolution, a continuous solid layer remains; after fast, oscillatory deformation of the layer, small crystals are expelled from the layer. This observation shows promise toward developing stimuli-responsive systems, with sensitivity to deformation rate, in addition to the already known thermoresponsiveness and photoresponsiveness of oleofoams.
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Affiliation(s)
- Saikat Saha
- Department
of Chemical Engineering, Delft University
of Technology, 2629 HZ Delft, The Netherlands
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, United Kingdom
| | - Francis Pagaud
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, United Kingdom
| | - Bernard P. Binks
- Department
of Chemistry, University of Hull, Hull HU6 7RX, United Kingdom
| | - Valeria Garbin
- Department
of Chemical Engineering, Delft University
of Technology, 2629 HZ Delft, The Netherlands
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, United Kingdom
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22
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Dedovets D, Li Q, Leclercq L, Nardello‐Rataj V, Leng J, Zhao S, Pera‐Titus M. Multiphase Microreactors Based on Liquid–Liquid and Gas–Liquid Dispersions Stabilized by Colloidal Catalytic Particles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202107537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dmytro Dedovets
- Eco-Efficient Products and Processes Laboratory (E2P2L) UMI 3464 CNRS-Solvay 3966 Jin Du Road, Xin Zhuang Ind Zone 201108 Shanghai China
- Laboratoire du Futur (LOF) UMR 5258, CNRS-Solvay-Universite Bordeaux 1 178 Av Dr Albert Schweitzer 33608 Pessac Cedex France
| | - Qingyuan Li
- Eco-Efficient Products and Processes Laboratory (E2P2L) UMI 3464 CNRS-Solvay 3966 Jin Du Road, Xin Zhuang Ind Zone 201108 Shanghai China
| | - Loïc Leclercq
- Univ Lille CNRS Centrale Lille Univ Artois UMR 8181 UCCS F-59000 Lille France
| | | | - Jacques Leng
- Laboratoire du Futur (LOF) UMR 5258, CNRS-Solvay-Universite Bordeaux 1 178 Av Dr Albert Schweitzer 33608 Pessac Cedex France
| | - Shuangliang Zhao
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology School of Chemistry and Chemical Engineering Guangxi University 530004 Nanning China
| | - Marc Pera‐Titus
- Eco-Efficient Products and Processes Laboratory (E2P2L) UMI 3464 CNRS-Solvay 3966 Jin Du Road, Xin Zhuang Ind Zone 201108 Shanghai China
- Cardiff Catalysis Institute School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
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23
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Koroleva MY, Yurtov EV. Pickering emulsions: properties, structure, using as colloidosomes and stimuli-responsive emulsions. RUSSIAN CHEMICAL REVIEWS 2022. [DOI: 10.1070/rcr5024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Zhu P, Wang L. Microfluidics-Enabled Soft Manufacture of Materials with Tailorable Wettability. Chem Rev 2021; 122:7010-7060. [PMID: 34918913 DOI: 10.1021/acs.chemrev.1c00530] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Microfluidics and wettability are interrelated and mutually reinforcing fields, experiencing synergistic growth. Surface wettability is paramount in regulating microfluidic flows for processing and manipulating fluids at the microscale. Microfluidics, in turn, has emerged as a versatile platform for tailoring the wettability of materials. We present a critical review on the microfluidics-enabled soft manufacture (MESM) of materials with well-controlled wettability and their multidisciplinary applications. Microfluidics provides a variety of liquid templates for engineering materials with exquisite composition and morphology, laying the foundation for precisely controlling the wettability. Depending on the degree of ordering, liquid templates are divided into individual droplets, one-dimensional (1D) arrays, and two-dimensional (2D) or three-dimensional (3D) assemblies for the modular fabrication of microparticles, microfibers, and monolithic porous materials, respectively. Future exploration of MESM will enrich the diversity of chemical composition and physical structure for wettability control and thus markedly broaden the application horizons across engineering, physics, chemistry, biology, and medicine. This review aims to systematize this emerging yet robust technology, with the hope of aiding the realization of its full potential.
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Affiliation(s)
- Pingan Zhu
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Liqiu Wang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
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25
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Dedovets D, Li Q, Leclercq L, Nardello-Rataj V, Leng J, Zhao S, Pera-Titus M. Multiphase Microreactors Based on Liquid-Liquid and Gas-Liquid Dispersions Stabilized by Colloidal Catalytic Particles. Angew Chem Int Ed Engl 2021; 61:e202107537. [PMID: 34528366 PMCID: PMC9293096 DOI: 10.1002/anie.202107537] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Indexed: 01/08/2023]
Abstract
Pickering emulsions, foams, bubbles, and marbles are dispersions of two immiscible liquids or of a liquid and a gas stabilized by surface‐active colloidal particles. These systems can be used for engineering liquid–liquid–solid and gas–liquid–solid microreactors for multiphase reactions. They constitute original platforms for reengineering multiphase reactors towards a higher degree of sustainability. This Review provides a systematic overview on the recent progress of liquid–liquid and gas–liquid dispersions stabilized by solid particles as microreactors for engineering eco‐efficient reactions, with emphasis on biobased reagents. Physicochemical driving parameters, challenges, and strategies to (de)stabilize dispersions for product recovery/catalyst recycling are discussed. Advanced concepts such as cascade and continuous flow reactions, compartmentalization of incompatible reagents, and multiscale computational methods for accelerating particle discovery are also addressed.
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Affiliation(s)
- Dmytro Dedovets
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, 3966 Jin Du Road, Xin Zhuang Ind Zone, 201108, Shanghai, China.,Laboratoire du Futur (LOF), UMR 5258, CNRS-Solvay-Universite Bordeaux 1, 178 Av Dr Albert Schweitzer, 33608, Pessac Cedex, France
| | - Qingyuan Li
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, 3966 Jin Du Road, Xin Zhuang Ind Zone, 201108, Shanghai, China
| | - Loïc Leclercq
- Univ Lille, CNRS, Centrale Lille, Univ Artois, UMR 8181 UCCS, F-59000, Lille, France
| | | | - Jacques Leng
- Laboratoire du Futur (LOF), UMR 5258, CNRS-Solvay-Universite Bordeaux 1, 178 Av Dr Albert Schweitzer, 33608, Pessac Cedex, France
| | - Shuangliang Zhao
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, 530004, Nanning, China
| | - Marc Pera-Titus
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, 3966 Jin Du Road, Xin Zhuang Ind Zone, 201108, Shanghai, China.,Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
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26
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Forth J, Mariano A, Chai Y, Toor A, Hasnain J, Jiang Y, Feng W, Liu X, Geissler PL, Menon N, Helms BA, Ashby PD, Russell TP. The Buckling Spectra of Nanoparticle Surfactant Assemblies. NANO LETTERS 2021; 21:7116-7122. [PMID: 34448588 DOI: 10.1021/acs.nanolett.1c01454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fine control over the mechanical properties of thin sheets underpins transcytosis, cell shape, and morphogenesis. Applying these principles to artificial, liquid-based systems has led to reconfigurable materials for soft robotics, actuation, and chemical synthesis. However, progress is limited by a lack of synthetic two-dimensional membranes that exhibit tunable mechanical properties over a comparable range to that seen in nature. Here, we show that the bending modulus, B, of thin assemblies of nanoparticle surfactants (NPSs) at the oil-water interface can be varied continuously from sub-kBT to 106kBT, by varying the ligands and particles that comprise the NPS. We find extensive departure from continuum behavior, including enormous mechanical anisotropy and a power law relation between B and the buckling spectrum width. Our findings provide a platform for shape-changing liquid devices and motivate new theories for the description of thin-film wrinkling.
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Affiliation(s)
- Joe Forth
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University College London, London, WC1H 0AJ, United Kingdom
| | - Andres Mariano
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Yu Chai
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Physics, City University of Hong Kong, Hong Kong SAR, China
| | - Anju Toor
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- School of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
| | - Jaffar Hasnain
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Yufeng Jiang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- School of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
| | - Wenqian Feng
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Xubo Liu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Phillip L Geissler
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Narayanan Menon
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Brett A Helms
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Paul D Ashby
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Thomas P Russell
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Polymer Science and Engineering Department, University of Massachusetts, 120 Governors Drive, Conte Center for Polymer Research, Amherst, Massachusetts 01003, United States
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
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27
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Koroleva MY, Yurtov EV. Ostwald ripening in macro- and nanoemulsions. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4962] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Aono K, Suzuki F, Yomogida Y, Hasumi M, Kado S, Nakahara Y, Yajima S. Foam Destabilization Effect of Sodium Bis(2-ethylhexyl)sulfosuccinate on Sodium Alkylsulfate Aqueous Solutions Based on Its Fast Surface Tension Gradient Relaxation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Keita Aono
- Department of Applied Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakae-dani, Wakayama 640-8510, Japan
- Kao Corporation, 1334 Minato, Wakayama 640-8580, Japan
| | | | | | | | - Shinpei Kado
- Department of Applied Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakae-dani, Wakayama 640-8510, Japan
| | - Yoshio Nakahara
- Department of Applied Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakae-dani, Wakayama 640-8510, Japan
| | - Setsuko Yajima
- Department of Applied Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakae-dani, Wakayama 640-8510, Japan
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29
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Correia EL, Brown N, Razavi S. Janus Particles at Fluid Interfaces: Stability and Interfacial Rheology. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:374. [PMID: 33540620 PMCID: PMC7913064 DOI: 10.3390/nano11020374] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 02/08/2023]
Abstract
The use of the Janus motif in colloidal particles, i.e., anisotropic surface properties on opposite faces, has gained significant attention in the bottom-up assembly of novel functional structures, design of active nanomotors, biological sensing and imaging, and polymer blend compatibilization. This review is focused on the behavior of Janus particles in interfacial systems, such as particle-stabilized (i.e., Pickering) emulsions and foams, where stabilization is achieved through the binding of particles to fluid interfaces. In many such applications, the interface could be subjected to deformations, producing compression and shear stresses. Besides the physicochemical properties of the particle, their behavior under flow will also impact the performance of the resulting system. This review article provides a synopsis of interfacial stability and rheology in particle-laden interfaces to highlight the role of the Janus motif, and how particle anisotropy affects interfacial mechanics.
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Affiliation(s)
| | | | - Sepideh Razavi
- School of Chemical, Biological, and Materials Engineering, University of Oklahoma, 100 E. Boyd Street, Norman, OK 73019, USA; (E.L.C.); (N.B.)
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30
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Kim BQ, Qiang Y, Turner KT, Choi SQ, Lee D. Heterostructured Polymer‐Infiltrated Nanoparticle Films with Cavities via Capillary Rise Infiltration. ADVANCED MATERIALS INTERFACES 2021; 8:2001421. [DOI: 10.1002/admi.202001421] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 08/30/2023]
Affiliation(s)
- Baekmin Q. Kim
- Department of Chemical and Biomolecular Engineering and KINC Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Korea
- Department of Chemical and Biomolecular Engineering University of Pennsylvania Philadelphia PA 19104 USA
| | - Yiwei Qiang
- Department of Materials Science and Engineering University of Pennsylvania Philadelphia PA 19104 USA
| | - Kevin T. Turner
- Department of Mechanical Engineering and Applied Mechanics University of Pennsylvania Philadelphia PA 19104 USA
| | - Siyoung Q. Choi
- Department of Chemical and Biomolecular Engineering and KINC Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Korea
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering University of Pennsylvania Philadelphia PA 19104 USA
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31
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Cervantes-Álvarez AM, Escobar-Ortega YY, Sauret A, Pacheco-Vázquez F. Air entrainment and granular bubbles generated by a jet of grains entering water. J Colloid Interface Sci 2020; 574:285-292. [PMID: 32334293 DOI: 10.1016/j.jcis.2020.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 11/30/2022]
Abstract
HYPOTHESIS A water jet penetrating into a water pool produces air entrainment and bubbles that rise to the surface and disintegrate. A similar scenario can be expected when a granular jet enters into water. This phenomenon is common in natural and industrial processes but remains so far unexplored. EXPERIMENTS A collimated jet of monodisperse silica beads was poured into water and the process was filmed with a high-speed camera. The grain size, jet impact velocity, and the liquid physical properties were systematically varied. FINDINGS For grains of ~50-300μm in diameter, the granular jet deforms the air-water interface, penetrates the pool and produces air entrainment. Most of the entrained air is contained in the interstitial space of the jet, and its volume is linearly proportional to the volume of grains. The bubbles formed in this process are covered by a layer of grains attached to the bubble air-water interface due to capillary-induced cohesion. These "granular bubbles" are stable over time because the granular shell prevents coalescence and keeps the air encapsulated, either if the bubbles rise to the surface or sink to the bottom of the pool, which is determined by the competition of the buoyancy and the weight of the assembly.
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Affiliation(s)
- A M Cervantes-Álvarez
- Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apartado Postal J-48, Puebla 72570, Mexico
| | - Y Y Escobar-Ortega
- Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apartado Postal J-48, Puebla 72570, Mexico
| | - A Sauret
- Department of Mechanical Engineering, University of California, Santa Barbara, CA, 93106 USA
| | - F Pacheco-Vázquez
- Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apartado Postal J-48, Puebla 72570, Mexico.
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Liu Q, Chen Z, Yang Y. Study of the Air-Entraining Behavior Based on the Interactions between Cement Particles and Selected Cationic, Anionic and Nonionic Surfactants. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3514. [PMID: 32784881 PMCID: PMC7475877 DOI: 10.3390/ma13163514] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/01/2020] [Accepted: 08/07/2020] [Indexed: 11/26/2022]
Abstract
The essential role of the air void size distribution in air-entrained cementitious materials is widely accepted. However, how the air-entraining behavior is affected by features such as the molecular structure of air-entraining agents (AEAs), the type of solid particles, or the chemical environment of the pore solution in fresh mortars is still not well understood. Besides, methods to assess the interaction between AEAs and cement particles are limited. Thus, in this study, the air-entraining behaviors of three kinds of surfactant (cationic, anionic, and nonionic) were examined. The general working mechanisms of these surfactants were studied by zeta potential and attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy. Results indicate that the cationic surfactant entrains improper coarse air voids due to the strong electrical interaction between air bubbles formed by the cationic surfactant and negatively charged cement particles. The anionic surfactant interacts with the positively charged part of cement particles, and thus entrains finer air voids. The interaction between the nonionic surfactant and cement particles is very weak; as a result, the nonionic surfactant entrains the finest and homogeneous air voids.
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Affiliation(s)
- Qi Liu
- School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; (Q.L.); (Z.C.)
- Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
| | - Zhitao Chen
- School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; (Q.L.); (Z.C.)
- Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
| | - Yingzi Yang
- School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; (Q.L.); (Z.C.)
- Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
- Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
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33
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Monjezi K, Mohammadi M, Khaz'ali AR. Stabilizing CO2 foams using APTES surface-modified nanosilica: Foamability, foaminess, foam stability, and transport in oil-wet fractured porous media. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113043] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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34
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Maestro A. Tailoring the interfacial assembly of colloidal particles by engineering the mechanical properties of the interface. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2019.02.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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36
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Shi S, Russell TP. Nanoparticle Assembly at Liquid-Liquid Interfaces: From the Nanoscale to Mesoscale. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800714. [PMID: 30035834 DOI: 10.1002/adma.201800714] [Citation(s) in RCA: 166] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/29/2018] [Indexed: 05/21/2023]
Abstract
In the past few decades, novel syntheses of a wide range of nanoparticles (NPs) with well-defined chemical composition and structure have opened tremendous opportunities in areas ranging from optical and electronic devices to biomedical markers. Controlling the assembly of such well-defined NPs is important to effectively harness their unique properties. The assembly of NPs at liquid-liquid interfaces is becoming a central topic both in surface and colloid science. Hierarchical structures, including 2D films, 3D capsules, and structured liquids, have been generating significant interest and are showing promise for physical, chemical, and biological applications. Here, a brief overview of the development of the self-assembly of NPs at liquid-liquid interfaces is provided, from theory to experiment, from synthetic NPs to bio-nanoparticles, from water-oil to water-water, and from "liquid-like" to "solid-like" assemblies.
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Affiliation(s)
- Shaowei Shi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Thomas P Russell
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA, 01003, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
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37
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Koike R, Iwashita Y, Kimura Y. Emulsion Droplets Stabilized by Close-Packed Janus Regular Polygonal Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12394-12400. [PMID: 30230339 DOI: 10.1021/acs.langmuir.8b02323] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In Pickering-Ramsden emulsions, the packing structure of the colloidal particles at the liquid-liquid (or liquid-gas) interface significantly affects the structure and behavior of the emulsion. Here, using a series of platelike particles with regular polygonal shapes and Janus amphiphilicity, we created emulsion droplets stabilized by close-packed polygonal particles at the interface. The systematic variation of the particle morphology shows that the geometrical features of the regular polygons in (curved) planar packing dominate over the self-assembled structures. The structures are tessellations of triangular, square, and hexagonal particles at the surface for large droplets and regular tetrahedral, cubic, and dodecahedral particle shells of triangular, square, and pentagonal particles for small droplets, respectively. This work creates the possibility of geometrically designing the structure and functionality of emulsions.
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Affiliation(s)
- Ryotaro Koike
- Department of Physics , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Yasutaka Iwashita
- Department of Physics , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Yasuyuki Kimura
- Department of Physics , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
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38
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Huerre A, De Corato M, Garbin V. Dynamic capillary assembly of colloids at interfaces with 10,000g accelerations. Nat Commun 2018; 9:3620. [PMID: 30190523 PMCID: PMC6127265 DOI: 10.1038/s41467-018-06049-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 08/14/2018] [Indexed: 11/08/2022] Open
Abstract
High-rate deformation of soft matter is an emerging area central to our understanding of far-from-equilibrium phenomena during shock, fracture, and phase change. Monolayers of colloidal particles are a convenient two-dimensional model system to visualise emergent behaviours in soft matter, but previous studies have been limited to slow deformations. Here we probe and visualise the evolution of a monolayer of colloids confined at a bubble surface during high-rate deformation driven by ultrasound. We observe the emergence of a transient network of strings, and use discrete particle simulations to show that it is caused by a delicate interplay of dynamic capillarity and hydrodynamic interactions between particles oscillating at high frequency. Remarkably for a colloidal system, we find evidence of inertial effects, caused by accelerations approaching 10,000g. These results also suggest that extreme deformation of soft matter offers new opportunities for pattern formation and dynamic self-assembly.
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Affiliation(s)
- Axel Huerre
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Marco De Corato
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Valeria Garbin
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK.
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39
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Otero J, Meeker S, Clegg PS. Compositional ripening of particle-stabilized drops in a three-liquid system. SOFT MATTER 2018; 14:3783-3790. [PMID: 29714797 DOI: 10.1039/c7sm02502e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present experimental studies of two aqueous drops, stabilized by colloidal silica, which are placed close to each other in a bath of toluene, ethanol and surplus colloidal silica. If one of the drops is enriched in ethanol while the other is pure water then we observe the spontaneous formation of small droplets at the surface of the water drop closest to its neighbour. These droplets are then observed to form all along the path to the ethanol enriched drop until they make a complete bridge. We relate this behaviour to the diffusion pathways on the underlying three-fluid phase diagram. We argue that the phenomena is a version of compositional ripening where the transfer of the dispersed phase leads to the spontaneous formation of droplets in the continuous phase. We show that, while the large drops are particle-stabilized, the spontaneously formed droplets are not. Instead the presence of surplus particles leads to the droplets gelling as an elastic bridge. The phenomenology at long times and at low particle concentrations becomes increasingly surprising.
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Affiliation(s)
- Javier Otero
- School of Physics and Astronomy, University of Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, UK.
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40
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Effect of surface modification of silica nanoparticles by silane coupling agent on decontamination foam stability. ANN NUCL ENERGY 2018. [DOI: 10.1016/j.anucene.2017.12.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Gu C, Botto L. Buckling vs. particle desorption in a particle-covered drop subject to compressive surface stresses: a simulation study. SOFT MATTER 2018; 14:711-724. [PMID: 29354834 DOI: 10.1039/c7sm01912b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Predicting the behaviour of particle-covered fluid interfaces under compression has implications in several fields. The surface-tension driven adhesion of particles to drops and bubbles is exploited for example to enhance the stability of foams and emulsion and develop new generation materials. When a particle-covered fluid interface is compressed, one can observe either smooth buckling or particle desorption from the interface. The microscopic mechanisms leading to the buckling-to-desorption transition are not fully understood. In this paper we simulate a spherical drop covered by a monolayer of spherical particles. The particle-covered interface is subject to time-dependent compressive surface stresses that mimic the slow deflation of the drop. The buckling-to-desorption transition depends in a non-trivial way on three non-dimensional parameters: the ratio Πs/γ of particle-induced surface pressure and bare surface tension, the ratio a/R of particle and drop radii, and the parameter f characterising the strength of adhesion of each particle to the interface. Based on the insights from the simulations, we propose a configuration diagram describing the effect of these controlling parameters. We find that particle desorption is highly correlated with a mechanical instability that produces small-scale undulations of the monolayer of the order of the particle size that grow when the surface pressure is sufficiently large. We argue that the large local curvature associated with these small undulations can produce large normal forces, enhancing the probability of desorption.
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Affiliation(s)
- Chuan Gu
- Queen Mary University of London, School of Engineering and Materials Science, Mile End Road, E1 4NS, London, UK.
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42
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Role of surface properties for the kinetics of bubble Ostwald ripening in saponin-stabilized foams. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.055] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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43
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Timounay Y, Ou E, Lorenceau E, Rouyer F. Low gas permeability of particulate films slows down the aging of gas marbles. SOFT MATTER 2017; 13:7717-7720. [PMID: 28984880 DOI: 10.1039/c7sm01444a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Introducing solid particles into liquid films drastically changes their properties: "gas marbles" can resist overpressure and underpressure ten times larger than their pure liquid counterparts - also known as soap bubbles - before deforming. Such gas marbles can therefore prove to be useful as gas containers able to support stresses. Yet, as their liquid counterparts, they can undergo gas transfer, which can reduce the scope of their applications. However, their permeability has never been characterized. In this paper, we measure the gas permeability of gas marbles through dedicated experiments. Our results show that particulate films are less permeable to gas than their pure liquid counterparts. We attribute this limited overall gas flux to the particles that reduce the surface area through which gas diffuses.
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Affiliation(s)
- Yousra Timounay
- Université Paris-Est, Laboratoire Navier (CNRS UMR 8205, École des Ponts ParisTech, IFSTTAR), 2 Allée Képler, 77 420 Champs-sur-Marne, France.
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44
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Lesov I, Tcholakova S, Kovadjieva M, Saison T, Lamblet M, Denkov N. Role of Pickering stabilization and bulk gelation for the preparation and properties of solid silica foams. J Colloid Interface Sci 2017; 504:48-57. [DOI: 10.1016/j.jcis.2017.05.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/11/2017] [Accepted: 05/11/2017] [Indexed: 11/29/2022]
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45
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Abstract
A strategy to halt dissolution of particle-coated air bubbles in water based on interfacial rheology design is presented. Whereas previously a dense monolayer was believed to be required for such an "armored bubble" to resist dissolution, in fact engineering a 2D yield stress interface suffices to achieve such performance at submonolayer particle coverages. We use a suite of interfacial rheology techniques to characterize spherical and ellipsoidal particles at an air-water interface as a function of surface coverage. Bubbles with varying particle coverages are made and their resistance to dissolution evaluated using a microfluidic technique. Whereas a bare bubble only has a single pressure at which a given radius is stable, we find a range of pressures over which bubble dissolution is arrested for armored bubbles. The link between interfacial rheology and macroscopic dissolution of [Formula: see text] 100 [Formula: see text]m bubbles coated with [Formula: see text] 1 [Formula: see text]m particles is presented and discussed. The generic design rationale is confirmed by using nonspherical particles, which develop significant yield stress at even lower surface coverages. Hence, it can be applied to successfully inhibit Ostwald ripening in a multitude of foam and emulsion applications.
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46
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Tuziuti T, Yasui K, Kanematsu W. Influence of increase in static pressure on bulk nanobubbles. ULTRASONICS SONOCHEMISTRY 2017. [PMID: 28633835 DOI: 10.1016/j.ultsonch.2017.03.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The concentration and size distribution of bulk nanobubbles (ultrafine bubbles) of air in liquid was measured before and after increasing the static pressure. It was found that, after pressurization, the number concentration decreased and the size increased. The effect of pressurization is to compress the bubbles and decrease the distance between solids on the bubble surface, which act as nucleation sites for bubble growth and coalescence when the static pressure is returned to atmospheric pressure.
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Affiliation(s)
- Toru Tuziuti
- National Institute of Advanced Industrial Science and Technology (AIST), Moriyama, Nagoya 463-8560, Japan.
| | - Kyuichi Yasui
- National Institute of Advanced Industrial Science and Technology (AIST), Moriyama, Nagoya 463-8560, Japan
| | - Wataru Kanematsu
- National Institute of Advanced Industrial Science and Technology (AIST), Moriyama, Nagoya 463-8560, Japan
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47
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Prabhudesai G, Bihi I, Zoueshtiagh F, Jose J, Baudoin M. Nonspherical armoured bubble vibration. SOFT MATTER 2017; 13:3879-3884. [PMID: 28488718 DOI: 10.1039/c7sm00097a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this paper, we study the dynamics of cylindrical armoured bubbles excited by mechanical vibrations. A step by step transition from cylindrical to spherical shape is reported as the intensity of the vibration is increased, leading to a reduction of the bubble surface and a dissemination of the excess particles. We demonstrate through energy balance that nonspherical armoured bubbles constitute a metastable state. The vibration instills the activation energy necessary for the bubble to return to its least energetic stable state: a spherical armoured bubble. At this point, particle desorption can only be achieved through higher amplitude of excitation required to overcome capillary retention forces. Nonspherical armoured bubbles open perspectives for tailored localized particle dissemination with limited excitation power.
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Affiliation(s)
- G Prabhudesai
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520, International Laboratory LEMAC/LICS - IEMN, F-59000 Lille, France.
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48
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Rumble KA, Stoev ID, French DJ, Abou-Hassan A, Clegg PS. Sprouting Droplets Driven by Physical Effects Alone. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4235-4241. [PMID: 28409928 DOI: 10.1021/acs.langmuir.6b04514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Combining a partially miscible three-liquid system with interfacially trapped silica colloids, we show that small droplets can exhibit dramatic growth phenomena driven by physical effects alone. The mass dense droplets sprout tubes which grow vertically upward in a gravitational field and respond to the presence of other droplets in their path. Two of the liquids in our system are water and toluene. By varying the third liquid, we are able to relate the growth behavior to the details of the underlying three-fluid phase diagram and the changes to the interfacial tension. Additionally, we introduce a pendant drop in the path of our growing drop. We use this to confirm that growth is driven by the partitioning of solvents, that exchange of solvents between droplets is chemically selective, and that the exchange behavior can itself generate further growth phenomena.
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Affiliation(s)
- Katherine A Rumble
- School of Physics and Astronomy, University of Edinburgh , Peter Guthrie Tait Road, Edinburgh EH9 3FD, United Kingdom
| | - Iliya D Stoev
- School of Physics and Astronomy, University of Edinburgh , Peter Guthrie Tait Road, Edinburgh EH9 3FD, United Kingdom
| | - David J French
- School of Physics and Astronomy, University of Edinburgh , Peter Guthrie Tait Road, Edinburgh EH9 3FD, United Kingdom
| | - Ali Abou-Hassan
- Sorbonne Universités, UPMC Université Paris 06 , Laboratoire Physico-chimie des Electrolytes et Nanosystémes Interfaciaux (PHENIX), UMR 8234 CNRS, 4 Place Jussieu, Case 51, F-75005 Paris, France
| | - Paul S Clegg
- School of Physics and Astronomy, University of Edinburgh , Peter Guthrie Tait Road, Edinburgh EH9 3FD, United Kingdom
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49
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Achakulwisut K, Tam C, Huerre A, Sammouti R, Binks BP, Garbin V. Stability of Clay Particle-Coated Microbubbles in Alkanes against Dissolution Induced by Heating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3809-3817. [PMID: 28349689 DOI: 10.1021/acs.langmuir.7b00429] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We investigated the dissolution and morphological dynamics of air bubbles in alkanes stabilized by fluorinated colloidal clay particles when subjected to temperature changes. A model for bubble dissolution with time-dependent temperature reveals that increasing the temperature enhances the bubble dissolution rate in alkanes, opposite to the behavior in water, because of the differing trends in gas solubility. Experimental results for uncoated air bubbles in decane and hexadecane confirm this prediction. Clay-coated bubbles in decane and hexadecane are shown to be stable in air-saturated oil at constant temperature, where dissolution is driven mainly by the Laplace pressure. When the temperature increases from ambient, the particle-coated bubbles are prone to dissolution as the oil phase becomes undersaturated. The interfacial layer of particles is observed to undergo buckling and crumpling, without shedding of clay particles. Increasing the concentration of particles is shown to enhance the bubble stability by providing a higher resistance to dissolution. When subjected to complex temperature cycles, for which the effect of time-dependent temperature is dominant, the clay-coated bubbles can resist long-term dissolution in conditions under which uncoated bubbles dissolve completely. These results underpin the design of ultrastable oil foams stabilized by solid particles with improved shelf life under changing environmental conditions.
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Affiliation(s)
- Kanvara Achakulwisut
- Department of Chemical Engineering, Imperial College London , London SW7 2AZ, U.K
| | - Chak Tam
- Department of Chemical Engineering, Imperial College London , London SW7 2AZ, U.K
| | - Axel Huerre
- Department of Chemical Engineering, Imperial College London , London SW7 2AZ, U.K
| | - Rafaella Sammouti
- Department of Chemical Engineering, Imperial College London , London SW7 2AZ, U.K
| | - Bernard P Binks
- School of Mathematics and Physical Sciences, University of Hull , Hull HU6 7RX, U.K
| | - Valeria Garbin
- Department of Chemical Engineering, Imperial College London , London SW7 2AZ, U.K
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50
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Protière S, Josserand C, Aristoff JM, Stone HA, Abkarian M. Sinking a Granular Raft. PHYSICAL REVIEW LETTERS 2017; 118:108001. [PMID: 28339259 DOI: 10.1103/physrevlett.118.108001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Indexed: 06/06/2023]
Abstract
We report experiments that yield new insights on the behavior of granular rafts at an oil-water interface. We show that these particle aggregates can float or sink depending on dimensionless parameters taking into account the particle densities and size and the densities of the two fluids. We characterize the raft shape and stability and propose a model to predict its shape and maximum length to remain afloat. Finally we find that wrinkles and folds appear along the raft due to compression by its own weight, which can trigger destabilization. These features are characteristics of an elastic instability, which we discuss, including the limitations of our model.
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Affiliation(s)
- Suzie Protière
- CNRS UMR 7190, Sorbonne Universités, UPMC Univ Paris 06, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Christophe Josserand
- CNRS UMR 7190, Sorbonne Universités, UPMC Univ Paris 06, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Jeffrey M Aristoff
- Numerica Corporation, 5042 Technology Parkway, Suite 100, Fort Collins, Colorado 80528, USA
| | - Howard A Stone
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, USA
| | - Manouk Abkarian
- CNRS UMR 5048, University Montpellier, Centre de Biochimie Structurale, 34090 Montpellier, France
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