Odd elasticity of a catalytic micromachine

Abstract

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 the nonequilibrium variable describing the catalytic reactions. The time-correlation functions of the structural variables are calculated and further analyzed in terms of odd Langevin dynamics. We obtain the effective odd elastic constant that manifests the broken time-reversal symmetry of a catalytic micromachine. Within the simulation, we separately estimate the quantity called nonreciprocality and show that its behavior is similar to that of the odd elasticity.Our approach suggests a new method to extract the nonequilibrium properties of a micromachine only by measuring its structural dynamics.

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Cited by in corpus (5)

• Odd elastohydrodynamics: non-reciprocal living material in a viscous fluid
• Generalized Three-Sphere Microswimmers
• Non-reciprocal Phase Separations with Non-conserved Order Parameters
• A minimal model with stochastically broken reciprocity
• Irreversibility of stochastic state transitions in Langevin systems with odd elasticity