Asymmetric transportation induced by thermal noise at the nanoscale

Autor:	Wan, Rongzheng, Hu, Jun, Fang, Haiping
Rok vydání:	2011
Předmět:	Condensed Matter - Statistical Mechanics Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Science China, Physics, Mechanics & Astronomy, May 2012 Vol.55 No.5: 751-756
Druh dokumentu:	Working Paper
DOI:	10.1007/s11433-012-4695-8
Popis:	Based on a simple model, we theoretically show that asymmetric transportation is possible in nanoscale systems experiencing thermal noise without the presence of external fluctuations. The key to this theoretical advance is that the correlation lengths of the thermal fluctuations become significantly long for nanoscale systems. This differs from macroscopic systems in which the thermal noises are usually treated as white noise. Our observation does not violate the second law of thermodynamics, since at nanoscale, extra energy is required to keep the asymmetric structure against thermal fluctuations. Comment: 15 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1111.3131 Zobrazit plný text záznamu View this record from Arxiv