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One-dimensional mass transport with dynamic external potentials |
| Xingxing Zhang(张星星), Dongqin Zheng(郑冬琴), Weirong Zhong(钟伟荣) |
| Siyuan Laboratory, Department of Physics, Jinan University, Guangzhou 510632, China |
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Abstract Using non-equilibrium molecular dynamics and the Monte Carlo method, we simulated mass transport in a one-dimensional channel with dynamic external potentials. This study focuses on the influence of the dynamic external potential field on the mass transport. Traveling wave and standing wave potential fields have been employed as our dynamic potential field. We found that mass transport can be promoted by the traveling wave field when the external potential moves along the direction of the mass current. When the standing wave field is exerted on the channel, the channel is found to work like a switch. The mass current can be “on” or “off” by adjusting the standing wave frequency. The effects of the period number, the amplitude and the velocity of the external potential on the mass transport are also discussed. Our research provides valuable advice for the control o particle transport through one-dimensional channels.
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Received: 01 November 2018
Revised: 12 December 2018
Accepted manuscript online:
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PACS:
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05.60.Cd
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(Classical transport)
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66.10.cg
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(Mass diffusion, including self-diffusion, mutual diffusion, tracer diffusion, etc.)
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47.60.Dx
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(Flows in ducts and channels)
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47.61.-k
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(Micro- and nano- scale flow phenomena)
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| Fund: Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No. 2014A030313367). |
Corresponding Authors:
Dongqin Zheng, Weirong Zhong
E-mail: zhengdq@jnu.edu.cn;wrzhong@hotmail.com
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Cite this article:
Xingxing Zhang(张星星), Dongqin Zheng(郑冬琴), Weirong Zhong(钟伟荣) One-dimensional mass transport with dynamic external potentials 2019 Chin. Phys. B 28 020505
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