Eur. Phys. J. Appl. Phys.
Volume 68, Number 3, December 2014
|Number of page(s)||5|
|Section||Nanomaterials and Nanotechnologies|
|Published online||12 December 2014|
A water-based molecular flip-flop
Department of Physics, Zhejiang Agriculture and Forestry University, Hangzhou, Linan
311300, P.R. China
2 Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Zhejiang Agriculture and Forestry University, Hangzhou, Linan 311300, P.R. China
3 Department of Physics, Fudan University, Shanghai 200433, P.R. China
Revised: 28 October 2014
Accepted: 6 November 2014
Published online: 12 December 2014
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.
© EDP Sciences, 2014
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