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Electromanipulating Water Flow in Nanochannels
Author(s) -
Kou Jianlong,
Yao Jun,
Lu Hangjun,
Zhang Bo,
Li Aifen,
Sun Zhixue,
Zhang Jianguang,
Fang Yunzhang,
Wu Fengmin,
Fan Jintu
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201408633
Subject(s) - chemical physics , flux (metallurgy) , charge (physics) , chemistry , hydrogen bond , molecular dynamics , computational chemistry , molecule , physics , organic chemistry , quantum mechanics
In sharp contrast to the prevailing view that a stationary charge outside a nanochannel impedes water permeation across the nanochannel, molecular dynamics simulations show that a vibrational charge outside the nanochannel can promote water flux. In the vibrational charge system, a decrease in the distance between the charge and the nanochannel leads to an increase in the water net flux, which is contrary to that of the fixed‐charge system. The increase in net water flux is the result of the vibrational charge‐induced disruption of hydrogen bonds when the net water flux is strongly affected by the vibrational frequency of the charge. In particular, the net flux is reaches a maximum when the vibrational frequency matches the inherent frequency of hydrogen bond inside the nanochannel. This electromanipulating transport phenomenon provides an important new mechanism of water transport confined in nanochannels.