Water-mediated signal multiplication with Y-shaped carbon nanotubes

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2004-2010年

	Water-mediated signal multiplication with Y-shaped carbon nanotubes
	Tu, YS（涂育松） ; Xiu, P ; Wan, RZ ; Hu, J（胡钧） ; Zhou, RH ; Fang, HP（方海平）
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2009
卷号	106 期号:43 页码:5
关键词	confined water molecular dynamics molecular signal transmission Y-shaped nanochannel signal transduction
ISSN号	0027-8424
通讯作者	Zhou, RH (reprint author), IBM Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA
英文摘要	Molecular scale signal conversion and multiplication is of particular importance in many physical and biological applications, such as molecular switches, nano-gates, biosensors, and various neural systems. Unfortunately, little is currently known regarding the signal processing at the molecular level, partly due to the significant noises arising from the thermal fluctuations and interferences between branch signals. Here, we use molecular dynamics simulations to show that a signal at the single-electron level can be converted and multiplied into 2 or more signals by water chains confined in a narrow Y-shaped nanochannel. This remarkable transduction capability of molecular signal by Y-shaped nanochannel is found to be attributable to the surprisingly strong dipole-induced ordering of such water chains, such that the concerted water orientations in the 2 branches of the Y-shaped nanotubes can be modulated by the water orientation in the main channel. The response to the switching of the charge signal is very rapid, from a few nanoseconds to a few hundred nanoseconds. Furthermore, simulations with various water models, including TIP3P, TIP4P, and SPC/E, show that the transduction capability of the Y-shaped carbon nanotubes is very robust at room temperature, with the interference between branch signals negligible.
学科主题	Science & Technology - Other Topics
收录类别	SCI
语种	英语
WOS记录号	WOS:000271222500017
公开日期	2012-04-11
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/7115]
专题	上海应用物理研究所_中科院上海应用物理研究所2004-2010年
推荐引用方式 GB/T 7714	Tu, YS,Xiu, P,Wan, RZ,et al. Water-mediated signal multiplication with Y-shaped carbon nanotubes[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2009,106(43):5.
APA	Tu, YS,Xiu, P,Wan, RZ,Hu, J,Zhou, RH,&Fang, HP.(2009).Water-mediated signal multiplication with Y-shaped carbon nanotubes.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,106(43),5.
MLA	Tu, YS,et al."Water-mediated signal multiplication with Y-shaped carbon nanotubes".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 106.43(2009):5.