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	Intrinsic Autocorrelation Time of Picoseconds for Thermal Noise in Water
	Zhu, Z ; Sheng, N ; Wan, RZ ; Fang, HP
刊名	JOURNAL OF PHYSICAL CHEMISTRY A
	2014
卷号	118期号:39页码:8936—8941
关键词	CARBON NANOTUBE MEMBRANES MOLECULAR-DYNAMICS METHOD HYDROGEN-BOND LIQUID WATER TRANSPORT DISTRIBUTIONS EQUILIBRIUM SIMULATIONS CONDUCTION RATCHETS
ISSN号	1089-5639
通讯作者	fanghaiping@sinap.ac.cn
英文摘要	Whether thermal noise is colored or white is of fundamental importance. In conventional theory, thermal noise is usually treated as white noise so that there are no directional transportations in the asymmetrical systems without external inputs, since only the colored fluctuations with appropriate autocorrelation time length can lead to directional transportations in the asymmetrical systems. Here, on the basis of molecular dynamics simulations, we show that the autocorrelation time length of thermal noise in water is similar to 10 ps at room temperature, which indicates that thermal noise is not white in the molecular scale while thermal noise can be reasonably assumed as white in macro- and meso-scale systems. The autocorrelation time length of thermal noise is intrinsic, since the value is almost unchanged for different temperature coupling methods. Interestingly, the autocorrelation time of thermal noise is correlated with the lifetime of hydrogen bonds, suggesting that the finite autocorrelation time length of thermal noise mainly comes from the finite lifetime of the interactions between neighboring water molecules.
收录类别	SCI
语种	英语
WOS记录号	WOS:000342651200007
公开日期	2015-03-13
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/14203]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Zhu, Z,Sheng, N,Wan, RZ,et al. Intrinsic Autocorrelation Time of Picoseconds for Thermal Noise in Water[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2014,118(39):8936—8941.
APA	Zhu, Z,Sheng, N,Wan, RZ,&Fang, HP.(2014).Intrinsic Autocorrelation Time of Picoseconds for Thermal Noise in Water.JOURNAL OF PHYSICAL CHEMISTRY A,118(39),8936—8941.
MLA	Zhu, Z,et al."Intrinsic Autocorrelation Time of Picoseconds for Thermal Noise in Water".JOURNAL OF PHYSICAL CHEMISTRY A 118.39(2014):8936—8941.

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