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

Science Bulletin 2012年第Z1期 181-186页

作者： CHEN MinJiang1,2,YU Fang1,HU LiJun1 & SUN LianFeng1* 1 National Center for Nanoscience and Technology,Beijing 100190,China 2 Graduate School of Chinese Academy of Sciences,Beijing 100049,China

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 ?.An intertube spacing of 3.39 ? of between adjacent swnts results in a sharp(002) reflection in the X-ray diffraction ***,we developed an approach based on the Coulomb explosion to separate swnts from their *** separated swnts have a typical length of several microns and form a nanotree at one end of the original *** separation is convenient and involves no *** 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 ***/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 *** energy conversion is realized by the mutual coupling of water dipoles and charge carriers present in *** results suggest that swnts can be exploited as molecular channels for water and may find potential application in nanoscale energy ***,a surface-energy generator comprising swnts was demonstrated to harvest the surface energy of *** performance(the induction rate for Voc,the value of Voc and the output power) can be significantly enhanced by the Marangoni effect.

关键词： single-walled carbon nanotube(swnt) crystal of swnt swnt tree energy conversion surface-energy generator

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