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Filippov AV, Starov V. Interaction of Nanoparticles in Electrolyte Solutions. J Phys Chem B 2023. [PMID: 37463394 PMCID: PMC10388360 DOI: 10.1021/acs.jpcb.3c01220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The interaction between nanoparticles includes several components; however, the most frequently used are electrostatic, caused by overlapping double electrical layers, and London-van der Waals interactions, caused by quantum and thermodynamic fluctuations of electromagnetic fields. Only these two kinds of interaction are considered below. The electrostatic interaction is calculated based on the linearized Poisson-Boltzmann equation for particles with constant electrical potential of the surfaces (constant ζ potentials). An exact solution of the problem is obtained for both identical particles and particles of different sizes. For the London-van der Waals interaction, the screening of static fluctuations and the retardation of electromagnetic fields for the dispersive part of the interaction are taken into account. The total interaction energy for two particles was calculated for a range of possible nanoparticle sizes from 1 to 103 nm and electrolyte concentration from 10-2 to 10-6 mol/L. The predominance of the London-van der Waals force over the shielded electrostatic repulsion force was found at high electrolyte concentrations in the range from 10-2 to 10-3 mol/L at large interparticle distances.
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Affiliation(s)
- Anatoly V Filippov
- Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya Street 13 Building 2, Moscow 125412, Russia
- Troitsk Institute for Innovation and Fusion Research, Pushkovykh Street, vl. 12, Troitsk 108840, Russia
| | - Victor Starov
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, United Kingdom
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Ma H, Zhou L, Liu Z, Chen M, Xia X, Zhao Y. A review of recent development for the CFD-DEM investigations of non-spherical particles. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Glaubitz C, Rothen-Rutishauser B, Lattuada M, Balog S, Petri-Fink A. Designing the ultrasonic treatment of nanoparticle-dispersions via machine learning. Nanoscale 2022; 14:12940-12950. [PMID: 36043853 PMCID: PMC9477382 DOI: 10.1039/d2nr03240f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Ultrasonication is a widely used and standardized method to redisperse nanopowders in liquids and to homogenize nanoparticle dispersions. One goal of sonication is to disrupt agglomerates without changing the intrinsic physicochemical properties of the primary particles. The outcome of sonication, however, is most of the time uncertain, and quantitative models have been beyond reach. The magnitude of this problem is considerable owing to fact that the efficiency of sonication is not only dependent on the parameters of the actual device, but also on the physicochemical properties such as of the particle dispersion itself. As a consequence, sonication suffers from poor reproducibility. To tackle this problem, we propose to involve machine learning. By focusing on four nanoparticle types in aqueous dispersions, we combine supervised machine learning and dynamic light scattering to analyze the aggregate size after sonication, and demonstrate the potential to improve considerably the design and reproducibility of sonication experiments.
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Affiliation(s)
- Christina Glaubitz
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | | | - Marco Lattuada
- Chemistry Department, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
- Chemistry Department, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
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Peidys DA, Hernandez Santiago AA, Evstigneev MP. The interplay of enthalpic/entropic factors in nanoparticles' aggregation in solution: The case of fullerene C60. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Kang Y, Yang F, Wu T, Lu S, Du Y, Yang H. The laser-triggered dynamical plasmonic optical trapping of targets and advanced Raman detection sensitivity. Chem Commun (Camb) 2020; 56:13157-13160. [DOI: 10.1039/d0cc04726k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Targets can be captured at hot spots during the laser-induced agglomeration of AgNPs via dynamical plasmonic optical trapping.
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Affiliation(s)
- Yan Kang
- Center of Analysis and Test
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Feng Yang
- Department of Laboratory Medicine
- Huadong Hospital
- Fudan University
- Shanghai
- China
| | - Ting Wu
- Center of Analysis and Test
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Siqian Lu
- Center of Analysis and Test
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yiping Du
- Center of Analysis and Test
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Haifeng Yang
- Department of Chemistry
- Shanghai Normal University
- Shanghai 200234
- China
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Cheng J, Dou Y, Zhang N, Li Z, Wang Z. A New Method for Predicting Erosion Damage of Suddenly Contracted Pipe Impacted by Particle Cluster via CFD-DEM. Materials (Basel) 2018; 11:E1858. [PMID: 30274228 DOI: 10.3390/ma11101858] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/09/2018] [Accepted: 09/25/2018] [Indexed: 11/17/2022]
Abstract
A numerical study on the erosion of particle clusters in an abrupt pipe was conducted by means of the combined computational fluid dynamics (CFD) and discrete element methods (DEM). Furthermore, a particle-wall extrusion model and a criterion for judging particle collision interference were developed to classify and calculate the erosion rate caused by different interparticle collision mechanisms in a cluster. Meanwhile, a full-scale pipe flow experiment was conducted to confirm the effect of a particle cluster on the erosion rate and to verify the calculated results. The reducing wall was made of super 13Cr stainless steel materials and the round ceramsite as an impact particle was 0.65 mm in diameter and 1850 kg/m³ in density. The results included an erosion depth, particle-wall contact parameters, and a velocity decay rate of colliding particles along the radial direction at the target surface. Subsequently, the effect of interparticle collision mechanisms on particle cluster erosion was discussed. The calculated results demonstrate that collision interference between particles during one cluster impact was more likely to appear on the surface with large particle impact angles. This collision process between the rebounded particles and the following particles not only consumed the kinetic energy but also changed the impact angle of the following particles.
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Guan L, Yuan Z, Gu Z, Yang L, Zhong W, Wu Y, Sun S, Gu C. Numerical simulation of ash particle deposition characteristics on the granular surface of a randomly packed granular filter. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2016.08.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Armstrong E, Khunsin W, Osiak M, Blömker M, Sotomayor Torres CM, O'Dwyer C. Ordered 2D colloidal photonic crystals on gold substrates by surfactant-assisted fast-rate dip coating. Small 2014; 10:1895-1901. [PMID: 24591098 DOI: 10.1002/smll.201303616] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 01/24/2014] [Indexed: 06/03/2023]
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Jaiswal RP, Beaudoin SP. Approximate scheme for calculating van der Waals interactions between finite cylindrical volume elements. Langmuir 2012; 28:8359-8370. [PMID: 22620674 DOI: 10.1021/la203987q] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A successful approach to calculating van der Waals (vdW) forces between irregular bodies is to divide the bodies into small cylindrical volume elements and integrate the vdW interactions between opposing elements. In this context it has been common to use Hamaker's expression for parallel plates to approximate the vdW interactions between the opposing elements. This present study shows that Hamaker's vdW expression for parallel plates does not accurately describe the vdW interactions for co-axial cylinders having a ratio of cylinder radius to separation distance (R/D) of 10 or less. This restricts the systems that can be simulated using this technique and explicitly excludes consideration of topographical or compositional variations at the nanoscale for surfaces that are in contact or within a few nm of contact. To address this limitation, approximate analytical expressions for nonretarded vdW forces between finite cylinders in different orientations are derived and are shown to produce a high level of agreement with forces calculated using full numerical solutions of the corresponding Hamaker's equations. The expressions developed here allow accurate calculation of vdW forces in systems where particles are in contact or within a few nm of contact with surfaces and the particles and/or surfaces have heterogeneous nanoscale morphology or composition. These calculations can be performed at comparatively low computational cost compared to the full numerical solution of Hamaker's equations.
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Affiliation(s)
- Ravi P Jaiswal
- School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907-2100, USA
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Yang P, Qian X. A general, accurate procedure for calculating molecular interaction force. J Colloid Interface Sci 2009; 337:594-605. [DOI: 10.1016/j.jcis.2009.05.055] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Revised: 05/08/2009] [Accepted: 05/11/2009] [Indexed: 10/20/2022]
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Chai J, Zhang X, Huang J, Tan X, Dai G. Microscopic model of nano-scale particles removal in high pressure CO2-based solvents. J Supercrit Fluids 2009; 49:182-8. [DOI: 10.1016/j.supflu.2008.12.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Haddadan FKP, Schlesener F, Dietrich S. Liquid-crystalline Casimir effect in the presence of a patterned substrate. Phys Rev E Stat Nonlin Soft Matter Phys 2004; 70:041701. [PMID: 15600419 DOI: 10.1103/physreve.70.041701] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2004] [Indexed: 05/24/2023]
Abstract
We consider a nematic liquid crystal confined by two parallel planar interfaces, one being laterally homogeneous and the other provided by a substrate endowed with a periodic chemical stripe pattern. Based on continuum theory we analyze the influence of the lateral pattern on the liquid-crystalline Casimir force acting on the interfaces of the nematic cell at distance d due to the thermal fluctuations of the nematic director. For d much larger than the pattern periodicity, the influence of the patterned substrate can be described by a homogeneous, effective anchoring energy. By tuning this parameter we recover previous results for the liquid-crystalline Casimir force. For the general case, i.e., smaller separations, we present numerical results.
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Affiliation(s)
- F Karimi Pour Haddadan
- Max-Planck-Institut für Metallforschung, Heisenbergstrasse 3, D-70569 Stuttgart, Germany.
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Abstract
We consider anisotropic colloidal particles with dumbbell or lens shapes that are immersed in a critical binary fluid mixture. The orientation-dependent long-ranged universal interactions mediated by the critical solvent between a particle and a wall or between two particles are investigated for mesoscopic particle sizes small compared to the correlation length and interparticle distances. Exact results are obtained using a "small particle operator expansion." The amplitudes of the isotropic and anisotropic operators in the expansion depend on the size and aspect ratio of the dumbbell or lens and are determined by density profiles in the Ising model at the critical point in a wedge geometry with symmetry-breaking fixed-spin boundary conditions. Dumbbells and ellipsoids with a symmetry preserving surface are also considered.
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Affiliation(s)
- E Eisenriegler
- Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425, Germany
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Affiliation(s)
- Michael A. Matthews
- Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208
| | - James Becnel
- Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208
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