Self-adaptive behavior of nunchakus-like tracer induced by active Brownian particles |
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Institution: | 1.Department of Physics and Electronic Engineering, Yancheng Teachers University, Yancheng 224007, China;2.Center for Soft Condensed Matter Physics&Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China;3.Department of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China |
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Abstract: | We design a nunchakus-like tracer and investigate its self-adaptive behavior in an active Brownian particle (ABP) bath via systematically tuning the self-propelled capability and density of ABPs. Specifically, the nunchakus-like tracer will have a stable wedge-like shape in the ABP bath when the self-propelled force is high enough. We analyze the angle between the two arms of the tracer and the velocity of the joint point of the tracer. The angle exhibits a non-monotonic phenomenon as a function of active force. However, it increases with density of ABPs increasing monotonically. A simple linear relationship between the velocity and the self-propelled force is found under the highly active force. In other words, the joint points of the tracer diffuse and the super-diffusive behavior can make the relation between the self-propelled force and the density of ABPs persist longer. In addition, we find that the tracer can flip at high density of ABPs. Our results also suggest the new self-adaptive model research of the transport properties in a non-equilibrium medium. |
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Keywords: | tracer self-adaptive super-diffusion active Brownian particles |
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