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Chan CW, Wu D, Qiao K, Fong KL, Yang Z, Han Y, Zhang R. Chiral active particles are sensitive reporters to environmental geometry. Nat Commun 2024; 15:1406. [PMID: 38365770 PMCID: PMC10873462 DOI: 10.1038/s41467-024-45531-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 01/24/2024] [Indexed: 02/18/2024] Open
Abstract
Chiral active particles (CAPs) are self-propelling particles that break time-reversal symmetry by orbiting or spinning, leading to intriguing behaviors. Here, we examined the dynamics of CAPs moving in 2D lattices of disk obstacles through active Brownian dynamics simulations and granular experiments with grass seeds. We find that the effective diffusivity of the CAPs is sensitive to the structure of the obstacle lattice, a feature absent in achiral active particles. We further studied the transport of CAPs in obstacle arrays under an external field and found a reentrant directional locking effect, which can be used to sort CAPs with different activities. Finally, we demonstrated that parallelogram lattices of obstacles without mirror symmetry can separate clockwise and counter-clockwise CAPs. The mechanisms of the above three novel phenomena are qualitatively explained. As such, our work provides a basis for designing chirality-based tools for single-cell diagnosis and separation, and active particle-based environmental sensors.
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Affiliation(s)
- Chung Wing Chan
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR
| | - Daihui Wu
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR
| | - Kaiyao Qiao
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR
| | - Kin Long Fong
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR
- Physik-Department, Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany
| | - Zhiyu Yang
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR
| | - Yilong Han
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR
| | - Rui Zhang
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR.
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Lei T, Zhao C, Yan R, Zhao N. Collective behavior of chiral active particles with anisotropic interactions in a confined space. Soft Matter 2023; 19:1312-1329. [PMID: 36723153 DOI: 10.1039/d2sm01402e] [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] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Extensive studies so far have indicated that chirality, anisotropic interactions and spatial confinement play important roles in collective dynamics in active matter systems. However, how the overall interplay of these crucial factors affects the novel phases and macroscopic properties remains less explored. Here, using Langevin dynamics simulations, we investigate the self-organization of a chiral active system composed of amphiphilic Janus particles, where the embedded anisotropic interaction orientation is assumed to be either the same or just opposite to the direction of active force. A wealth of dynamic phases are observed including formation of phase separation, clustering state, homogeneous state, spiral vortex flow, swarm and spatiotemporal oscillation. By tuning self-propelled angular speed and anisotropic interaction strength, we identify the non-equilibrium phase diagrams, and reveal the very non-trivial modulation of both vortex and swarm patterns. Intriguingly, we find that strong chirality-alignment-confinement coupling yields a self-driven spatial and temporal organization periodically oscillating between a counterclockwise vortex and a clockwise one. Our work provides a new understanding of the novel self-assembly arising in such a confined system and enables new strategies for achieving ordered dynamic structures.
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Affiliation(s)
- Ting Lei
- College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Chaonan Zhao
- College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Ran Yan
- College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Nanrong Zhao
- College of Chemistry, Sichuan University, Chengdu 610064, China.
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Echigoya S, Sato K, Kishida O, Nakagaki T, Nishigami Y. Switching of behavioral modes and their modulation by a geometrical cue in the ciliate Stentor coeruleus. Front Cell Dev Biol 2022; 10:1021469. [PMID: 36393838 PMCID: PMC9663998 DOI: 10.3389/fcell.2022.1021469] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 10/17/2022] [Indexed: 08/14/2023] Open
Abstract
Protists ubiquitously live in nature and play key roles in the food web chain. Their habitats consist of various geometrical structures, such as porous media and rigid surfaces, affecting their motilities. A kind of protist, Stentor coeruleus, exhibits free swimming and adhering for feeding. Under environmental and culture conditions, these organisms are often found in sediments with complex geometries. The determination of anchoring location is essential for their lives. However, the factors that induce the behavioral transition from swimming to adhering are still unknown. In this study, we quantitatively characterized the behavioral transitions in S. coeruleus and observed the behavior in a chamber with dead ends made by a simple structure mimicking the environmental structures. As a result, the cell adheres and feeds in narrow spaces between the structure and the chamber wall. It may be reasonable for the organism to hide itself from predators and capture prey in these spaces. The behavioral strategy for the exploration and exploitation of spaces with a wide variety of geometries in their habitats is discussed.
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Affiliation(s)
- Syun Echigoya
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
| | - Katsuhiko Sato
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
| | - Osamu Kishida
- Field Science Center for Northern Biosphere, Tomakomai Experimental Forest, Hokkaido University, Tomakomai, Japan
| | - Toshiyuki Nakagaki
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
| | - Yukinori Nishigami
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
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Beppu K, Maeda YT. Exploring order in active turbulence: Geometric rule and pairing order transition in confined bacterial vortices. Biophys Physicobiol 2022; 19:1-9. [PMID: 35797406 PMCID: PMC9173862 DOI: 10.2142/biophysico.bppb-v19.0020] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/10/2022] [Indexed: 12/01/2022] Open
Abstract
Ordered collective motion emerges in a group of autonomously motile elements (known as active matter) as their density increases. Microswimmers, such as swimming bacteria, have been extensively studied in physics and biology. A dense suspension of bacteria forms seemingly chaotic turbulence in viscous fluids. Interestingly, this active turbulence driven by bacteria can form a hidden ensemble of many vortices. Understanding the active turbulence in a bacterial suspension can provide physical principles for pattern formation and insight into the instability underlying biological phenomena. This review presents recent findings regarding ordered structures causing active turbulence and discusses a physical approach for controlling active turbulence via geometric confinement. When the active matter is confined in a compartment with a size comparable to the correlation length of the collective motion, vortex-like rotation appears, and the vortex pairing order is indicated by the patterns of interacting vortices. Additionally, we outline the design principle for controlling collective motions via the geometric rule of the vortex pairing, which may advance engineering microdevices driven by a group of active matter. This article is an extended version of the Japanese article, Ordered Structure and Geometric Control of Active Matter in Dense Bacterial Suspensions, published in SEIBUTSU BUTSURI Vol. 60, p. 13–18 (2020).
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Bentley SA, Laeverenz-Schlogelhofer H, Anagnostidis V, Cammann J, Mazza MG, Gielen F, Wan KY. Phenotyping single-cell motility in microfluidic confinement. eLife 2022; 11:76519. [PMID: 36416411 PMCID: PMC9683786 DOI: 10.7554/elife.76519] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 10/13/2022] [Indexed: 11/24/2022] Open
Abstract
The movement trajectories of organisms serve as dynamic read-outs of their behaviour and physiology. For microorganisms this can be difficult to resolve due to their small size and fast movement. Here, we devise a novel droplet microfluidics assay to encapsulate single micron-sized algae inside closed arenas, enabling ultralong high-speed tracking of the same cell. Comparing two model species - Chlamydomonas reinhardtii (freshwater, 2 cilia), and Pyramimonas octopus (marine, 8 cilia), we detail their highly-stereotyped yet contrasting swimming behaviours and environmental interactions. By measuring the rates and probabilities with which cells transition between a trio of motility states (smooth-forward swimming, quiescence, tumbling or excitable backward swimming), we reconstruct the control network that underlies this gait switching dynamics. A simplified model of cell-roaming in circular confinement reproduces the observed long-term behaviours and spatial fluxes, including novel boundary circulation behaviour. Finally, we establish an assay in which pairs of droplets are fused on demand, one containing a trapped cell with another containing a chemical that perturbs cellular excitability, to reveal how aneural microorganisms adapt their locomotor patterns in real-time.
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Affiliation(s)
- Samuel A Bentley
- Living Systems Institute, University of ExeterExeterUnited Kingdom,Mathematics and Statistics, University of ExeterExeterUnited Kingdom,Biosciences, University of ExeterExeterUnited Kingdom
| | - Hannah Laeverenz-Schlogelhofer
- Living Systems Institute, University of ExeterExeterUnited Kingdom,Mathematics and Statistics, University of ExeterExeterUnited Kingdom
| | - Vasileios Anagnostidis
- Living Systems Institute, University of ExeterExeterUnited Kingdom,Biosciences, University of ExeterExeterUnited Kingdom,Physics and Astronomy, University of ExeterExeterUnited Kingdom
| | - Jan Cammann
- Interdisciplinary Centre for Mathematical Modelling and Department of Mathematical Sciences, Loughborough UniversityLoughboroughUnited Kingdom
| | - Marco G Mazza
- Interdisciplinary Centre for Mathematical Modelling and Department of Mathematical Sciences, Loughborough UniversityLoughboroughUnited Kingdom,Max Planck Institute for Dynamics and Self-Organization (MPIDS)GöttingenGermany
| | - Fabrice Gielen
- Living Systems Institute, University of ExeterExeterUnited Kingdom,Physics and Astronomy, University of ExeterExeterUnited Kingdom
| | - Kirsty Y Wan
- Living Systems Institute, University of ExeterExeterUnited Kingdom,Mathematics and Statistics, University of ExeterExeterUnited Kingdom
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Shigeta K, Fukuyama T, Takahashi R, Beppu K, Tanaka A, Maeda YT. Collective motion of epithelial cells along a wrinkled 3D-buckled hydrogel. RSC Adv 2022; 12:20174-20181. [PMID: 35919621 PMCID: PMC9274378 DOI: 10.1039/d2ra01768g] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 07/04/2022] [Indexed: 12/02/2022] Open
Abstract
Epithelial cells migrate autonomously by aligning and inducing a collective motion. Controlling the collective motion of epithelial cells in geometrically confined environments is important for understanding physiological processes such as wound healing and self-organized morphogenesis. However, collective migration under a three-dimensional (3D) curved surface resembling living epithelial tissue has not yet been explored. In this study, we investigated the collective motion of a 3D-buckled polyacrylamide (PAAm) gel that mimics the shape of folds and wrinkles of epithelial tissue to understand the geometric effects of collective motion. We found that the velocity correlation in the space near the hydrogel boundary showed a periodic change that correlated with the wrinkled folding of the hydrogel pattern. Furthermore, the characteristic length of the velocity correlation increased proportionally with the wavelength of wrinkled folding. These observations indicated that the hydrogel pattern could steer the collective motion of epithelial cells over long distances. Our study also suggests that the wrinkled design of the hydrogel is a versatile platform for studying the geometric effect of a curved surface on complex epithelial cell dynamics. Collective motion of epithelial cell monolayer was studied on a 3D-buckled hydrogel mimicking a wrinkled epithelial surface. Emergent spatial correlation in velocity was found near the wrinkled gel boundary.![]()
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Affiliation(s)
- Kazuyuki Shigeta
- Department of Physics, Graduate School of Science, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan
| | - Tatsuya Fukuyama
- Department of Physics, Graduate School of Science, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan
| | - Riku Takahashi
- NTT Basic Research Laboratories, Bio-Medical Informatics Research Center, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
| | - Kazusa Beppu
- Department of Physics, Graduate School of Science, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan
| | - Aya Tanaka
- NTT Basic Research Laboratories, Bio-Medical Informatics Research Center, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
| | - Yusuke T. Maeda
- Department of Physics, Graduate School of Science, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan
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Araki S, Beppu K, Kabir AMR, Kakugo A, Maeda YT. Controlling Collective Motion of Kinesin-Driven Microtubules via Patterning of Topographic Landscapes. Nano Lett 2021; 21:10478-10485. [PMID: 34874725 DOI: 10.1021/acs.nanolett.1c03952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Biomolecular motor proteins that generate forces by consuming chemical energy obtained from ATP hydrolysis play pivotal roles in organizing cytoskeletal structures in living cells. An ability to control cytoskeletal structures would benefit programmable protein patterning; however, our current knowledge is limited because of the underdevelopment of engineering approaches for controlling pattern formation. Here, we demonstrate the controlling of self-assembled patterns of microtubules (MTs) driven by kinesin motors by designing the boundary shape in fabricated microwells. By manipulating the collision angle of gliding MTs defined by the boundary shape, the self-assembly of MTs can be controlled to form protruding bundle and bridge patterns. Corroborated by the theory of self-propelled rods, we further show that the alignment of MTs determines the transition between the assembled patterns, providing a blueprint to reconstruct bridge structures in microchannels. Our findings introduce the tailoring of the self-organization of cytoskeletons and motor proteins for nanotechnological applications.
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Affiliation(s)
- Shunya Araki
- Department of Physics, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Kazusa Beppu
- Department of Physics, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Arif Md Rashedul Kabir
- Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Hokkaido Japan
| | - Akira Kakugo
- Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Hokkaido Japan
| | - Yusuke T Maeda
- Department of Physics, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
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Torrik A, Naji A, Zarif M. Dimeric colloidal inclusion in a chiral active bath: Effective interactions and chirality-induced torque. Phys Rev E 2021; 104:064610. [PMID: 35030934 DOI: 10.1103/physreve.104.064610] [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] [Received: 07/29/2021] [Accepted: 11/29/2021] [Indexed: 06/14/2023]
Abstract
Colloidal inclusions suspended in a bath of smaller particles experience an effective bath-mediated attraction at small intersurface separations, which is known as the depletion interaction. In an active bath of nonchiral self-propelled particles, the effective force changes from attraction to repulsion, an effect that is suppressed when the active bath particles are chiral. Using Brownian dynamics simulations, we study the effects of channel confinement and bath chirality on the effective forces and torques that are mediated between two inclusions that may be fixed within the channel or may be allowed to rotate freely as a rigid dimer around its center of mass. We show that the confinement has a strong effect on the effective interactions, depending on the orientation of the dimer relative to the channel walls. The active particle chirality leads to a force imbalance and, hence, a net torque on the inclusion dimer, which we investigate as a function of the bath chirality strength and the channel height.
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Affiliation(s)
- Abdolhalim Torrik
- Department of Physical and Computational Chemistry, Shahid Beheshti University, Tehran 19839-9411, Iran
| | - Ali Naji
- School of Nano Science, Institute for Research in Fundamental Sciences (IPM), Tehran 19395-5531, Iran
- School of Physics, Institute for Research in Fundamental Sciences (IPM), Tehran 19395-5531, Iran
| | - Mahdi Zarif
- Department of Physical and Computational Chemistry, Shahid Beheshti University, Tehran 19839-9411, Iran
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