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      Alignment controlled growth of single-walled carbon nanotubes on quartz substrates

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      Author(s)
      Xiao, J.
      Dunham, S.
      Liu, P.
      Zhang, Y.
      Kocabaş, Coşkun
      Moh, L.
      Huang, Y.
      Hwang, K. -C.
      Lu, C.
      Huang, W.
      Rogers, J. A.
      Date
      2009-09-11
      Source Title
      Nano Letters
      Print ISSN
      1530-6984
      Electronic ISSN
      1530-6992
      Publisher
      American Chemical Society
      Volume
      9
      Issue
      12
      Pages
      4311 - 4319
      Language
      English
      Type
      Article
      Item Usage Stats
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      261
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      Abstract
      Single-walled carbon nanotubes (SWNTs) possess extraordinary electrical properties, with many possible applications in electronics. Dense, horizonally aligned arrays of linearly configured SWNTs represent perhaps the most attractive and scalable way to implement this class of nanomaterial in practical systems. Recent work shows that templated growth of tubes on certain crystalline substrates yields arrays with the necessary levels of perfection, as demonstrated by the formation of devices and full systems on quartz. This paper examines advanced implementations of this process on crystalline quartz substrates with different orientations, to yield strategies for forming diverse, but welldefined horizontal configurations of SWNTs. Combined experimental and theoretical studies indicate that angle-dependent van der Waals interactions can account for nearly all aspects of alignment on quartz with X, Y, Z, and ST cuts, as well as quartz with disordered surface layers. These findings provide important insights into methods for guided growth of SWNTs, and possibly other classes of nanomaterials, for applications in electronics, sensing, photodetection, light emission, and other areas.
      Keywords
      Surface roughness
      Interaction energies
      Energy
      Carbon nanotubes
      Potential energy
      Permalink
      http://hdl.handle.net/11693/53551
      Published Version (Please cite this version)
      https://doi.org/10.1021/nl9025488
      Collections
      • Advanced Research Laboratories (ARL) 35
      • Department of Physics 2550
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