95 citations · 1.2k across the 76 of their papers we have counts for
73 papers · 1 filter
Domain growth in lipid membranes and the budding instability
Jean Wolff, Fabrice Thalmann, Carlos Marques +3
We investigate the growth of a circular domain in a phase-separating lipid membrane and its relation to the budding instability. We describe the in-plane dynamics with a conserved,…
Emergence of odd elasticity in a microswimmer using deep reinforcement learning
Li-Shing Lin, Kento Yasuda, Kenta Ishimoto +1
We use the Deep Q-Network with reinforcement learning to investigate the emergence of odd elasticity in an elastic microswimmer model. For an elastic microswimmer, it is challengin…
Non-reciprocal Phase Separations with Non-conserved Order Parameters
Maoji Liu, Zhanglin Hou, Hiroyuki Kitahata +2
We numerically investigate the phase separation dynamics of the non-reciprocal Allen-Cahn model in which two non-conserved order parameters are coupled. The system exhibits several…
Generalized Three-Sphere Microswimmers
Kento Yasuda, Yuto Hosaka, Shigeyuki Komura
Among several models for microswimmers, the three-sphere microswimmer proposed by Najafi and Golestanian captures the essential mechanism for the locomotion of a microswimmer in a…
Odd elasticity of a catalytic micromachine
Akira Kobayashi, Kento Yasuda, Kenta Ishimoto +4
We perform numerical simulations of a model micromachine driven by catalytic chemical reactions. Our model includes a mechano-chemical coupling between the structural variables and…
Pair dynamics of active force dipoles in an odd-viscous fluid
Yuto Hosaka, David Andelman, Shigeyuki Komura
We discuss the lateral dynamics of two active force dipoles, which interact with each other via hydrodynamic interactions in a thin fluid layer that is active and chiral. The fluid…
Universality in the dynamics of vesicle translocation through a hole
Bin Zheng, Fangfu Ye, Shigeyuki Komura +1
We analyze the translocation process of a spherical vesicle, made of membrane and incompressible fluid, through a hole smaller than the vesicle size, driven by pressure difference…
Simulations of Odd Microswimmers
Akira Kobayashi, Kento Yasuda, Li-Shing Lin +3
We perform numerical simulations of odd microswimmers consisting of three spheres and two odd springs. To describe the hydrodynamic interaction, both the Oseen-type and the Rotne-P…
Onsager's variational principle for nonreciprocal systems with odd elasticity
Li-Shing Lin, Kento Yasuda, Kenta Ishimoto +2
Using Onsager's variational principle, we derive dynamical equations for a nonequilibrium active system with odd elasticity. The elimination of the extra variable that is coupled t…
Nonequilibrium Transport Induced by Biological Nanomachines
Yuto Hosaka, Shigeyuki Komura
Biological nanomachines are nanometer-size macromolecular complexes that catalyze chemical reactions in the presence of substrate molecules. The catalytic functions carried out by…
Odd Viscosity in Chiral Passive Suspensions
Zhiyuan Zhao, Mingcheng Yang, Shigeyuki Komura +1
Prior studies have revealed that nonzero odd viscosity is an essential property for chiral active fluids. Here we report that such an odd viscosity also exists in suspensions of no…
Lateral response of a layered material with interlayer friction
Tomoki Sasada, Kento Yasuda, Yuto Hosaka +1
We investigate the mechanical properties of a layered material with interlayer friction. We propose a model that contains lateral elasticity and interlayer friction to obtain the r…
Time-correlation functions for odd Langevin systems
Kento Yasuda, Kenta Ishimoto, Akira Kobayashi +4
We investigate the statistical properties of fluctuations in active systems that are governed by non-symmetric responses. Both an underdamped Langevin system with an odd resistance…
The Onsager-Machlup Integral for Non-reciprocal Systems with Odd Elasticity
Kento Yasuda, Akira Kobayashi, Li-Shing Lin +3
The variational principle of the Onsager-Machlup integral is used to describe the stochastic dynamics of a micromachine, such as an enzyme, characterized by odd elasticity. The obt…
Hydrodynamic lift of a two-dimensional liquid domain with odd viscosity
Yuto Hosaka, Shigeyuki Komura, David Andelman
We discuss hydrodynamic forces acting on a two-dimensional liquid domain that moves laterally within a supported fluid membrane in the presence of odd viscosity. Since active rotat…
Emergent Stripes of Active Rotors in Shear Flows
Zhiyuan Zhao, Boyi Wang, Shigeyuki Komura +3
The shear-induced self-organization of active rotors into stripy aggregates is studied by carrying out computational simulations. The rotors, modeled by monolayers of frictional sp…
Odd Microswimmer
Kento Yasuda, Yuto Hosaka, Isamu Sou +1
We propose a model for a thermally driven microswimmer in which three spheres are connected by two springs with odd elasticity. We demonstrate that the presence of odd elasticity l…
Brownian motion of a charged colloid in restricted confinement
Y. Avni, S. Komura, D. Andelman
We study the Brownian motion of a charged colloid, confined between two charged walls, for small separation between the colloid and the walls. The system is embedded in an ionic so…
Nonreciprocality of a micromachine driven by a catalytic chemical reaction
Kento Yasuda, Shigeyuki Komura
We propose a model that describes cyclic state transitions of a micromachine driven by a catalytic chemical reaction. We consider a mechano-chemical coupling of variables represent…
Lateral diffusion on a frozen random surface
Takao Ohta, Shigeyuki Komura
The lateral diffusion coefficient of a Brownian particle on a two-dimensional random surface is studied in the quenched limit for which the surface configuration is time-independen…
Autonomous elastic microswimmer
Katsutomo Era, Yuki Koyano, Yuto Hosaka +3
A model of an autonomous three-sphere microswimmer is proposed by implementing a coupling effect between the two natural lengths of an elastic microswimmer. Such a coupling mechani…
Dynamics of passive and active membrane tubes
Sami C. Al-Izzi, Pierre Sens, Matthew S. Turner +1
Utilising Onsager's variational formulation, we derive dynamical equations for the relaxation of a fluid membrane tube in the limit of small deformation, allowing for a contrast of…
Reciprocal microswimmers in a viscoelastic fluid
Kento Yasuda, Mizuki Kuroda, Shigeyuki Komura
We suggest several reciprocal swimming mechanisms that lead to a locomotion only in viscoelastic fluids. The first situation is to have a difference between the two amplitudes of t…
Mechanochemical enzymes and protein machines as hydrodynamic force dipoles: The active dimer model
Yuto Hosaka, Shigeyuki Komura, Alexander S. Mikhailov
Mechanochemically active enzymes change their shapes within every turnover cycle. Therefore, they induce circulating flows in the solvent around them and behave as oscillating hydr…