The effect of substrate surface roughness on the synthesis of carbon nanotube (CNT) junctions is studied. CNTs were obtained by a pulsed liquid injection chemical vapour deposition system (PLICVD) and grown on quartz substrates with different roughnesses. Nickel particles were used as catalyst and acetone as the carbon precursor. Results shown that CNTs growth depend strongly on the substrate irregularity. When roughness is present, the presence of CNT junctions are increased. On the quartz surface, without any modification of roughness, CNTs are not obtained. Thus, a growth mechanism for CNT junctions, based on the substrate roughness is suggested. This method represents an important alternative to produce CNTs for applying them in nanoelectronic devices. (C) 2010 Elsevier B.V. All rights reserved.
机构:
N China Inst Water Conservancy & Hydroelect Power, Inst Environm & Municipal Engn, Zhengzhou 450011, Peoples R China
Beijing Inst Technol, Sch Chem Engn & Environm, Beijing 100081, Peoples R ChinaN China Inst Water Conservancy & Hydroelect Power, Inst Environm & Municipal Engn, Zhengzhou 450011, Peoples R China
Cao, Yong
Liu, Bingtao
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N China Inst Water Conservancy & Hydroelect Power, Inst Environm & Municipal Engn, Zhengzhou 450011, Peoples R ChinaN China Inst Water Conservancy & Hydroelect Power, Inst Environm & Municipal Engn, Zhengzhou 450011, Peoples R China
Liu, Bingtao
Jiao, Qingze
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Beijing Inst Technol, Sch Chem Engn & Environm, Beijing 100081, Peoples R ChinaN China Inst Water Conservancy & Hydroelect Power, Inst Environm & Municipal Engn, Zhengzhou 450011, Peoples R China
Jiao, Qingze
Zhao, Yun
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Beijing Inst Technol, Sch Chem Engn & Environm, Beijing 100081, Peoples R ChinaN China Inst Water Conservancy & Hydroelect Power, Inst Environm & Municipal Engn, Zhengzhou 450011, Peoples R China
Zhao, Yun
SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE,
2011,
64
: 67
-
70
机构:Chinese Acad Sci, State Key Lab Surface Phys, Inst Phys, Beijing 100080, Peoples R China
Ma, XC
Wang, EG
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Chinese Acad Sci, State Key Lab Surface Phys, Inst Phys, Beijing 100080, Peoples R ChinaChinese Acad Sci, State Key Lab Surface Phys, Inst Phys, Beijing 100080, Peoples R China