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.
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Univ Nacl San Luis, Lab Ciencias Superficies & Medios Porosos, RA-5700 San Luis, ArgentinaUniv Nacl San Luis, Lab Ciencias Superficies & Medios Porosos, RA-5700 San Luis, Argentina
Tristao, Juliana Cristina
Camilo Moura, Flavia Cristina
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Univ Nacl San Luis, Lab Ciencias Superficies & Medios Porosos, RA-5700 San Luis, ArgentinaUniv Nacl San Luis, Lab Ciencias Superficies & Medios Porosos, RA-5700 San Luis, Argentina
Camilo Moura, Flavia Cristina
Lago, Rochel Montero
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Univ Nacl San Luis, Lab Ciencias Superficies & Medios Porosos, RA-5700 San Luis, ArgentinaUniv Nacl San Luis, Lab Ciencias Superficies & Medios Porosos, RA-5700 San Luis, Argentina
Lago, Rochel Montero
Sapag, Karim
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Univ Nacl San Luis, Lab Ciencias Superficies & Medios Porosos, RA-5700 San Luis, ArgentinaUniv Nacl San Luis, Lab Ciencias Superficies & Medios Porosos, RA-5700 San Luis, Argentina
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Indian Inst Technol, Dept Phys, NFMTC, Alternat Energy & Nanotechnol Lab, Madras 600036, Tamil Nadu, IndiaIndian Inst Technol, Dept Phys, NFMTC, Alternat Energy & Nanotechnol Lab, Madras 600036, Tamil Nadu, India
Aravind, Sasidharannair Sasikaladevi Jyothirmayee
Eswaraiah, Varrla
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Indian Inst Technol, Dept Phys, NFMTC, Alternat Energy & Nanotechnol Lab, Madras 600036, Tamil Nadu, IndiaIndian Inst Technol, Dept Phys, NFMTC, Alternat Energy & Nanotechnol Lab, Madras 600036, Tamil Nadu, India
Eswaraiah, Varrla
Ramaprabhu, Sundara
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Indian Inst Technol, Dept Phys, NFMTC, Alternat Energy & Nanotechnol Lab, Madras 600036, Tamil Nadu, IndiaIndian Inst Technol, Dept Phys, NFMTC, Alternat Energy & Nanotechnol Lab, Madras 600036, Tamil Nadu, India