Jason Moscatello - Enhanced field emission stability and density produced by conical bundles of catalyst-free carbon nanotubes

Version 1

      Publication Details (including relevant citation   information):

      Archana Pandey, Abhishek Prasad, Jason Moscatello, Benjamin Ulmen   and Yoke Khin Yap

      Carbon, Volume 48, Number 1, Pages 287–292, 2010


      Self-assembled bundling and catalyst removal can enhance the   field emission stability and density of vertically-aligned   multiwalled carbon nanotubes (VA-MWCNTs). These catalyst-free,   opened tip VA-MWCNTs offered better emission stability than the   as-grown samples. Both the emission stability and density were   further enhanced as the opened-tip MWCNTs self-assembled into   arrays of conical bundles. Theoretical simulation suggests that   higher emission density was due to the reduced screening effects.   The simulated local fields at the tips of the bundles suggest for   a two-order of magnitude lower electric field loading on MWCNTs   and contribute to prolong emission stability needed for practical   applications.

      Address (URL): http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TWD-4X6MSYK-7&_user=1 967573&_coverDate=01/31/2010&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort =d&_docanchor=&view=c&_searchStrId=1522493453&_rerunOrigin=google&_acct=C0000534 03&_version=1&_urlVersion=0&_userid=1967573&md5=59125fc02e34ec3d1fb7676146d383c2 &searchtype=a