Y F Guan et al 2008 Nanotechnology 19 235604 doi:10.1088/0957-4484/19/23/235604
Y F Guan1, R C Pearce1, A V Melechko2, D K Hensley2, M L Simpson1,2 and P D Rack1,3
Show affiliationsWe present a pulsed laser dewetting technique that produces single nickel catalyst particles from lithographically patterned disks for subsequent carbon nanofiber growth through plasma enhanced chemical vapor deposition. Unlike the case for standard heat treated Ni catalyst disks, for which multiple nickel particles and consequently multiple carbon nanofibers (CNFs) are observed, single vertically aligned CNFs could be obtained from the laser dewetted catalyst. Different laser dewetting parameters were tested in this study, such as the laser energy density and the laser processing time measured by the total number of laser pulses. Various nickel disk radii and thicknesses were attempted and the resultant number of carbon nanofibers was found to be a function of the initial disk dimension and the number of laser pulses.
81.15.Gh Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, etc.)
Surfaces, interfaces and thin films
Issue 23 (11 June 2008)
Received 25 February 2008, in final form 19 March 2008
Published 7 May 2008
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J. D. Hartman et al. 2004 The Astronomical Journal 128 1761
S. E. Persson et al. 2004 The Astronomical Journal 128 2239
Maria Ida Moretti et al 2009 ApJ 699 L125
H E Fischer et al 2008 J. Phys.: Condens. Matter 20 045221
S. Brünken et al. 2009 ApJ 706 1588
P. Thaddeus et al. 2008 ApJ 677 1132