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A water-based molecular flip-flop

Published online by Cambridge University Press:  12 December 2014

Yu Wang  and
Jiping Huang
Yu Wang*
Affiliation:
Department of Physics, Zhejiang Agriculture and Forestry University, Hangzhou, Linan 311300, P.R. China Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Zhejiang Agriculture and Forestry University, Hangzhou, Linan 311300, P.R. China
Jiping Huang*
Affiliation:
Department of Physics, Fudan University, Shanghai 200433, P.R. China
*
ae-mail: [email protected]
be-mail: [email protected]
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Abstract

The flip-flop, which has been widely used in digital circuits, has two stable states and can be used to store state information. Because traditional flip-flops based on digital circuits suffer from a barrier to higher performance, it is necessary to explore some new alternative devices. For this purpose, we utilize molecular dynamics simulations to design a molecular flip-flop, which contains one water molecule confined within a single-walled carbon nanotube. Its two states can be switched within 0.5 ps (2000 GHz), and its state information can be exported by the charged atomic-force microscope force probes. The mechanism of the flip-flop depends on the behavior of a water molecule in a nonuniform electric field. In particular, a water molecule always moves toward the location of lowest electric energy in a nonuniform electric field generated by point charges. The resulting flip-flop could be utilized for designing nanoscale devices.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 68 , Issue 3 , December 2014 , 30403
Copyright
© EDP Sciences, 2014

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