Individual water-filled single-walled carbon nanotubes as hydroelectric power converters

Yuanchun Zhao*, Li Song, Ke Deng, Zheng Liu, Zengxing Zhang, Yanlian Yang, Chen Wang, Haifang Yang, Aizi Jin, Qiang Luo, Changzhi Gu, Sishen Xie, Lianfeng Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

187 Citations (Scopus)

Abstract

A study has reported on the detection of a significant voltage difference at one end of an individual nanotube of a single-walled carbon nanotubes (SWNT) device when a current is applied on the opposite side and it is exposed to water vapor. The study suggests that the water molecules inside the nanotube channel are dragged to flow directionally by an external electric field thereby generating an electromotive force along the nanotube. This energy conversion process is probably realized by the mutual coupling of water dipoles and free charge carriers present in SWNTs. The results of the study suggest that SWNTs can be exploited as unique, tunable molecular channels for water and might find potential application in nanoscale energy conversion. Nanofluidic logics based on the observed effects will also be of interest for future studies.

Original languageEnglish
Pages (from-to)1772-1776
Number of pages5
JournalAdvanced Materials
Volume20
Issue number9
DOIs
Publication statusPublished - May 5 2008
Externally publishedYes

ASJC Scopus Subject Areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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