Abstract In this paper, we report that an electromotive force (EMF) can be induced in a rope of aligned single-walled carbon nanotubes (SWNTs) when water droplets fall on this rope. The magnitude of this EMF depends sensitively on the slant angle of the SWNTs. Most interestingly, both the magnitude and the direction of the induced EFM can be modulated by applying a current to the SWNTs. The concepts of electrical slip and no-slip are proposed and can be quantitatively described by ``electrical slip resistance''. This kind of generator does not need any magnet, rotor, {etc} and shows quite a different operating mechanism and design compared with a conventional large scale hydroelectric power generator.
Fund: Project supported by the National
Basic Research Program of China (Grant No.~2006CB932402) and the
National Natural Science Foundation of China (Grant Nos.~50702015,
10574034, and 10774032).
Cite this article:
Liu Ji(刘基), Zheng Kai-Hong(郑凯泓), Liu Zheng(刘政), Hu Li-Jun(胡丽君), and Sun Lian-Feng(孙连峰) Direct transition of potential of water droplets to electric energy using aligned single-walled carbon nanotubes 2010 Chin. Phys. B 19 066101
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