NDLI: Recent progresses on the new condensed forms of single-walled carbon nanotubes and energy-harvesting devices

Content Provider	Springer Nature Link
Author	Chen, MinJiang Yu, Fang Hu, LiJun Sun, LianFeng
Copyright Year	2011
Abstract	We demonstrate an effective method to prepare a new condensed form of single-walled carbon nanotubes (crystal of SWNTs) using a series of diamond wire drawing dies. X-ray diffraction indicates that the SWNTs form a two-dimensional triangular lattice with a lattice constant of 19.62 Å. An intertube spacing of 3.39 Å of between adjacent SWNTs results in a sharp (002) reflection in the X-ray diffraction pattern. Meanwhile, we developed an approach based on the Coulomb explosion to separate SWNTs from their bundle. The separated SWNTs have a typical length of several microns and form a nanotree at one end of the original bundle. The separation is convenient and involves no surfactant. In studying devices comprising SWNTs, we find that a four-probe technique can be employed to study the filling of and flow within the inner channel of an individual SWNT. Current/voltage can drive water molecules to have directional flow along an SWNT, and the flowing of water inside an SWNT can induce a voltage gradient force (an induced electromotive force) along the SWNT. This energy conversion is realized by the mutual coupling of water dipoles and charge carriers present in SWNTs. The results suggest that SWNTs can be exploited as molecular channels for water and may find potential application in nanoscale energy conversion. Moreover, a surface-energy generator comprising SWNTs was demonstrated to harvest the surface energy of ethanol. The performance (the induction rate for V $_{oc}$, the value of V $_{oc}$ and the output power) can be significantly enhanced by the Marangoni effect.
Starting Page	181
Ending Page	186
Page Count	6
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	57
Issue Number	2-3
e-ISSN	18619541
Language	English
Publisher	SP Science China Press
Publisher Date	2011-10-27
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	single-walled carbon nanotube (SWNT) crystal of SWNT SWNT tree energy conversion surface-energy generator Life Sciences Earth Sciences Science Engineering Physics Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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