Entropic Stochastic Resonance Of A Self-propelled Janus Particle

This paper summarizes the related researches of Self-propelled Janus particles,introduces the classical model of entropy stochastic resonance,and brings out the ex-perimental process of Self-propelled Janus particles.Self-propelled Janus particles,also named active Brownian particles,can absorb energy from external environment to propel themselves.This property is different from passive Brownian Particles’.En-tropic stochastic resonance is investigated when a Self-propelled Janus particle moves in a double-cavity container.It is expected to provide theoretical foundation for de-tecting,controlling and making use of the Self-propelled Janus particles.Numerical simulation results indicate:(1).The entropic stochastic resonance can survive even if there is no symmetry breaking in any direction.(2).With the rotational noise inten-sity growing at small fixed noise intensity of translational motion,the signal power amplification increases monotonically towards saturation.This also can be regarded as a kind of stochastic resonance effect.(3).The increase in the natural frequency of the periodic driving depresses the degree of the stochastic resonance,whereas the rise in its amplitude enhances and then suppresses the behavior.(4).The optimal noise intensity required for the entropic stochastic resonance of the Self-propelled Janus particle is independent of the external conditions.There are two essential distinctions between the property of a self-propelled Janus particle and that of a passive Brow-nian particle:(1).The symmetry breaking is necessary for the entropic stochastic resonance of a passive Brownian particle,but not necessary for a Self-propelled Janus particle.(2).The optimal noise intensity required for the entropic stochastic reso-nance of the passive particle is dependent of the external conditions,but independent for a Self-propelled Janus particle.