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      Simultaneous growth of self-patterned carbon nanotube forests with dual height scales

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      Author(s)
      Sam, E. D.
      Kucukayan-Dogu, G.
      Baykal, B.
      Dalkilic, Z.
      Rana, K.
      Bengu, E.
      Date
      2012
      Source Title
      Nanoscale
      Print ISSN
      2040-3364
      Electronic ISSN
      2040-3372
      Publisher
      Royal Society of Chemistry
      Volume
      4
      Issue
      12
      Pages
      3746 - 3753
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      In this study, we report on a unique, one-step fabrication technique enabling the simultaneous synthesis of vertically aligned multi-walled carbon nanotubes (VA-MWCNTs) with dual height scales through alcohol catalyzed chemical vapor deposition (ACCVD). Regions of VA-MWCNTs with different heights were well separated from each other leading to a self-patterning on the surface. We devised a unique layer-by-layer process for application of catalyst and inhibitor precursors on oxidized Si (100) surfaces before the ACCVD step to achieve a hierarchical arrangement. Patterning could be controlled by adjusting the molarity and application sequence of precursors. Contact angle measurements on these self-patterned surfaces indicated that manipulation of these hierarchical arrays resulted in a wide range of hydrophobic behavior changing from that of a sticky rose petal to a lotus leaf.
      Permalink
      http://hdl.handle.net/11693/21435
      Published Version (Please cite this version)
      http://dx.doi.org/10.1039/c2nr30258f
      Collections
      • Department of Chemistry 640
      • Institute of Materials Science and Nanotechnology (UNAM) 1930
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