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Diamond nucleation and growth on zeolites

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Title Diamond nucleation and growth on zeolites
 
Creator TITUS, E
SINGH, MK
UNNI, KNN
TYAGI, PK
DUA, AK
ROY, M
MISRA, DS
 
Subject field-emission devices
polycrystalline diamond
infrared-analysis
films
carbon
deposition
membranes
hydrogen
hot-filament chemical vapor deposition
scanning electron microscopy
fourier transform infrared spectroscopy
 
Description In this work, we report the use of zeolites as substrates for the deposition of porous diamond films. Films were deposited in a hot-filament chemical vapor deposition (HFCVD) apparatus. The HFCVD system was fed with a mixture of methane (0.8%) with the balance being hydrogen. A series of depositions were done in the pressure range 20-120 Torr and at substrate temperature 880 degreesC. The morphologies of the as-deposited films were analyzed by scanning electron microscopy and show isolated diamond grains in the initial nucleation stages, which develop into a microporous film in the next stage and form a continuous film after long time deposition. Raman spectroscopy was used to investigate the crystal morphology, structure and non-diamond impurities in the films deposited at various growth conditions. The nature of the hydrogen bonding with sp(3) and sp(2) network and the quantitative analysis were done by Fourier transform infrared spectroscopy. (C) 2003 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-10-21T23:25:38Z
2011-12-15T09:10:37Z
2011-10-21T23:25:38Z
2011-12-15T09:10:37Z
2003
 
Type Article; Proceedings Paper
 
Identifier DIAMOND AND RELATED MATERIALS,12,1647-1652
0925-9635
http://dx.doi.org/10.1016/S0925-9635(03)00307-8
http://dspace.library.iitb.ac.in/xmlui/handle/10054/14764
http://hdl.handle.net/100/1551
 
Source 8th International Conference on New Diamond Science and Technology,VICTORIA, AUSTRALIA,JUL 21-26, 2002
 
Language English