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题名: Electrostatic-Charge- and Electric-Field-Induced Smart Gating for Water Transportation
作者: Xiao, Kai1; Zhou, Yahong2; Kong, Xiang-Yu2; Xie, Ganhua1; Li, Pei1; Zhang, Zhen1; Wen, Liping2; Jiang, Lei2
关键词: nanochannel ; nanopore ; gating ; water transportation ; ion transportation
刊名: ACS NANO
发表日期: 2016-10-01
卷: 10, 期:10, 页:9703-9709
收录类别: SCI
英文摘要: Regulating and controlling the transport of water across nanochannels is of great importance in both fundamental research and practical applications because it is difficult to externally control water flow through nanochannels as in biological channels. To date, only a few hydrophobic nanochannels controlling the transport of water have been reported, all of which use exotic hydrophobic molecules. However, the effect of electrostatic charges, which plays an indispensable role in membrane proteins and dominates the energetics of water permeation across aquaporins, has not gained enough attention to control water transport through a solid-state nanochannel/nanopore. Here, we report electrostatic-charge-induced water gating of a single ion track-etched sub-10 nm channel. This system can directly realize the gating transition between an open, conductive state and a closed, nonconductive state by regulating the surface charge density through a process that involves alternating capillary evaporation and capillary condensation. Compared to the introduction of exotic hydrophobic molecules, water gating controlled by electrostatic charges is simple, convenient, and effective. Such a system anticipates potential applications including desalination, controllable valves, and drug delivery systems.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35168
Appears in Collections:绿色印刷实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Key Lab Green Printing, BNLMS, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Bioinspired Smart Interfacial Sci, Beijing 100190, Peoples R China
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