Self-Assembly of Dimer Motors under Confined Conditions*

Zhou, An; Qiao, Li-Yan; Wei, Gui-Na; Jiang, Zhouting; Zhao, Yehua

doi:10.1088/0256-307x/37/5/050501

Chinese Phys. Lett.

2020

DOI: 10.1088/0256-307x/37/5/050501

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Self-Assembly of Dimer Motors under Confined Conditions*

An Zhou¹,

Li-Yan Qiao²,

Gui-Na Wei³

et al.

Abstract: Chemically synthetic nanomotors can consume fuel in the environment and utilize the self-generated concentration gradient to self-propel themselves in the system. We study the collective dynamics of an ensemble of sphere dimers built from linked catalytic and noncatalytic monomers. Because of the confinement from the fuel field and the interactions among motors, the ensemble of dimer motors can self-organize into various nanostructures, such as a radial pattern in the spherical fuel field and a staggered radia… Show more

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Cited by 3 publications

References 23 publications

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Designing, synthesizing, and modeling active fluids

et al. 2022

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We review recent advances in the design, synthesis, and modeling of active fluids. Active fluids have been at the center of many technological innovations and theoretical advances over the past two decades. Research on this new class of fluids has been inspired by the fascinating and remarkably efficient strategies that biological systems employ, leading to the development of biomimetic nano- and micro-machines and -swimmers. The review encompasses active fluids on both the nano- and the micro-scale, starting with examples of biological active systems before discussing how experimentalists leverage novel propulsion mechanisms to power nano- and micro-machines. We then examine how the study of these far-from-equilibrium systems has prompted the development of new simulation methods and theoretical models in nonquilibrium physics to account for their mechanical, thermodynamic and emergent properties. Recent advances in the field have paved the way for the design, synthesis, and modeling of autonomous systems at the nano- and micro-scale and open the door to the development of soft matter robotics.

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Designing, synthesizing, and modeling active fluids

et al. 2022

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Edge Transport and Self-Assembly of Passive Objects in a Chiral Active Fluid*

Yang¹,

Liang²,

Li³

et al. 2021

Chinese Phys. Lett.

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Topological edge flow and dissipationless odd viscosity are two remarkable features of chiral active fluids composed of active spinners. These features can significantly influence the dynamics of suspended passive particles and the interactions between the particles. By computer simulations, we investigate the transport phenomenon of anisotropic passive objects and the self-assembly behavior of passive spherical particles in the active spinner fluid. It is found that in confined systems, nonspherical passive objects can stably cling to boundary walls and are unidirectionally and robustly transported by edge flow of spinners. Furthermore, in an unconfined system, passive spherical particles are able to form stable clusters that spontaneously and unidirectionally rotate as a whole. In these phenomena, strong particle-wall and interparticle effective attractions play a vital role, which originate from spinner-mediated depletion-like interactions and can be largely enhanced by odd viscosity of spinner fluids. Our results thus provide new insight into the robust transport of cargoes and the nonequilibrium self-assembly of passive intruders.

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Self-Assembly of Bacteria in Alternating-Current Electric Fields

Li 李,

Zong 宗,

Zhang 张

et al. 2024

Chinese Phys. Lett.

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Self-assembly of bacteria in electric fields is a promising route to fabricate biomaterials with reversible and specific structures. However, due to relatively less studies, our understanding of the self-assembly of bacteria in electric fields is still incomplete. Particularly, how different bacterial species behave differently in their field-mediated self-assembly behavior remains to be disclosed. In this study, we choose four bacterial species, including Shewanella oneidensis, Pseudomonas aeruginosa, Bacillus subtilis and Lactococcus lactis as model systems, and investigate their self-assembly behavior in alternating-current (AC) electric fields for both diluted and concentrated suspensions. The phase diagrams in the plane of applied field strength vs frequency are obtained. The results show that in diluted suspensions, a transition sequence of isotropic–paranematic–string–columnar phases is observed in all strains as the field strength increases. Details of the assembled structures are quantitatively differentiated among different strains. In concentrated suspensions, besides the isotropic and paranematic phases, a higher ordered phase with interdigitating rectangular crystal domains (OIR) and an ordered phase with smectic A liquid crystal domains are observed for S. oneidensis and P. aeruginosa, respectively. Our findings shed new light on fabricating potential biomaterials by assembling cells of appropriately chosen bacterial species that have desired surface properties under AC electric fields.

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Self-Assembly of Dimer Motors under Confined Conditions*

Cited by 3 publications

References 23 publications

Designing, synthesizing, and modeling active fluids

Designing, synthesizing, and modeling active fluids

Edge Transport and Self-Assembly of Passive Objects in a Chiral Active Fluid*

Self-Assembly of Bacteria in Alternating-Current Electric Fields

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