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Laser Synthesis of Supported Catalysts for Carbon NanotubesFour methods of laser assisted catalyst generation for carbon nanotube (CNT) synthesis have been tested. These include pulsed laser transfer (PLT), photolytic deposition (PLD), photothermal deposition (PTD) and laser ablation deposition (LABD). Results from each method are compared based on CNT yield, morphology and structure. Under the conditions tested, the PLT was the easiest method to implement, required the least time and also yielded the best pattemation. The photolytic and photothermal methods required organometallics, extended processing time and partial vacuums. The latter two requirements also held for the ablation deposition approach. In addition to control of the substrate position, controlled deposition duration was necessary to achieve an active catalyst layer. Although all methods were tested on both metal and quartz substrates, only the quartz substrates proved to be inactive towards the deposited catalyst particles.
Document ID
20030105565
Acquisition Source
Headquarters
Document Type
Contractor Report (CR)
Authors
VanderWal, Randall L. (National Center for Microgravity Research on Fluids and Combustion Cleveland, OH, United States)
Ticich, Thomas M. (Centenary Coll. of Louisiana Shreveport, LA, United States)
Sherry, Leif J. (Centenary Coll. of Louisiana Shreveport, LA, United States)
Hall, Lee J. (National Center for Microgravity Research on Fluids and Combustion Cleveland, OH, United States)
Schubert, Kathy (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
September 1, 2003
Subject Category
Inorganic, Organic And Physical Chemistry
Report/Patent Number
NAS 1.26:212582
NASA/CR-2003-212582
E-14122
Funding Number(s)
WBS: WBS 22-101-12-06
CONTRACT_GRANT: NCC3-975
CONTRACT_GRANT: NCC3-544
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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