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標題: Entropic Transport from a Discrete Standpoint
作者: Wang, C.Y.
Li, P.C.
Chen, H.J.
Tseng, H.C.
關鍵字: Brownian motion;entropy barrier;entropic transport;random walk;diffusion;channels
Project: Journal of the Physical Society of Japan
期刊/報告no:: Journal of the Physical Society of Japan, Volume 79, Issue 5.
It's a known fact that driven Brownian transport through a geometrical landscape exhibits characteristic dependence of current and diffusion upon both temperature and a driving force as well as a remarkable existence of a scaling regime. From a different standpoint, this paper has investigated a neat random-walk model aiming at uniformly-driven transports under geometrical confinement and yet subject to discrete description. The results show that in this discrete modeling, some of those representative characteristcs of entropic transport retain while the others, such as scaling behavior, don't. In addition, two characteristics are observed which do not exist in the continuous model: a reverse dependence of current on noise strengths, and the existence of mobility optimization.
ISSN: 0031-9015
DOI: 10.1143/jpsj.79.054402
Appears in Collections:物理學系所

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