Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc

Nanotubes and nanofibers were grown on Ni coatings deposited by plasma generated with a pulsed vacuum arc on silicon wafers using three different bias conditions: at floating potential (approximately +30 V respect to the grounded cathode); at ground potential; and at -60 V. An atomic force microscop...

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Autores principales:	Escobar, Mariano Martín, Giuliani, Leandro Estanislao, Candal, Roberto Jorge, Lamas, Diego Germán, Caso, Alvaro, Grondona, Diana Elena, Goyanes, Silvia Nair, Marquez, Adriana B.
Publicado:	2010
Materias:	Nanostructured materials Thin films Bias conditions Floating potentials Ground potential Ni coating Ni films Pulsed vacuum arc SEM and TEM Substrate bias Vacuum arcs Atomic force microscopy Carbon nanotubes Cavity resonators Chemical vapor deposition Morphology Nanofibers Nickel coatings Semiconducting silicon compounds Silicon wafers Vacuum Vacuum applications Vacuum deposited coatings
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v495_n2_p446_Escobar http://hdl.handle.net/20.500.12110/paper_09258388_v495_n2_p446_Escobar
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09258388_v495_n2_p446_Escobar
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spelling	paper:paper_09258388_v495_n2_p446_Escobar2023-06-08T15:51:28Z Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc Escobar, Mariano Martín Giuliani, Leandro Estanislao Candal, Roberto Jorge Lamas, Diego Germán Caso, Alvaro Grondona, Diana Elena Goyanes, Silvia Nair Marquez, Adriana B. Nanostructured materials Thin films Bias conditions Floating potentials Ground potential Ni coating Ni films Pulsed vacuum arc SEM and TEM Substrate bias Vacuum arcs Atomic force microscopy Carbon nanotubes Cavity resonators Chemical vapor deposition Morphology Nanofibers Nanostructured materials Nickel coatings Semiconducting silicon compounds Silicon wafers Thin films Vacuum Vacuum applications Vacuum deposited coatings Nanotubes and nanofibers were grown on Ni coatings deposited by plasma generated with a pulsed vacuum arc on silicon wafers using three different bias conditions: at floating potential (approximately +30 V respect to the grounded cathode); at ground potential; and at -60 V. An atomic force microscopy study showed that the Ni film morphology was affected by the bias condition of the substrate. The morphology of carbonaceous species depended on Ni-films characteristics. FE-SEM and TEM analyses have shown that nanofibers growth was favoured on Ni coatings deposited at -60 V whereas nanotubes grew mainly on Ni coatings obtained at floating and ground potentials. Hence, this new method to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition. © 2009 Elsevier B.V. All rights reserved. Fil:Escobar, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Giuliani, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Candal, R.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lamas, D.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Caso, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Grondona, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goyanes, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Márquez, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v495_n2_p446_Escobar http://hdl.handle.net/20.500.12110/paper_09258388_v495_n2_p446_Escobar
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Nanostructured materials Thin films Bias conditions Floating potentials Ground potential Ni coating Ni films Pulsed vacuum arc SEM and TEM Substrate bias Vacuum arcs Atomic force microscopy Carbon nanotubes Cavity resonators Chemical vapor deposition Morphology Nanofibers Nanostructured materials Nickel coatings Semiconducting silicon compounds Silicon wafers Thin films Vacuum Vacuum applications Vacuum deposited coatings
spellingShingle	Nanostructured materials Thin films Bias conditions Floating potentials Ground potential Ni coating Ni films Pulsed vacuum arc SEM and TEM Substrate bias Vacuum arcs Atomic force microscopy Carbon nanotubes Cavity resonators Chemical vapor deposition Morphology Nanofibers Nanostructured materials Nickel coatings Semiconducting silicon compounds Silicon wafers Thin films Vacuum Vacuum applications Vacuum deposited coatings Escobar, Mariano Martín Giuliani, Leandro Estanislao Candal, Roberto Jorge Lamas, Diego Germán Caso, Alvaro Grondona, Diana Elena Goyanes, Silvia Nair Marquez, Adriana B. Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc
topic_facet	Nanostructured materials Thin films Bias conditions Floating potentials Ground potential Ni coating Ni films Pulsed vacuum arc SEM and TEM Substrate bias Vacuum arcs Atomic force microscopy Carbon nanotubes Cavity resonators Chemical vapor deposition Morphology Nanofibers Nanostructured materials Nickel coatings Semiconducting silicon compounds Silicon wafers Thin films Vacuum Vacuum applications Vacuum deposited coatings
description	Nanotubes and nanofibers were grown on Ni coatings deposited by plasma generated with a pulsed vacuum arc on silicon wafers using three different bias conditions: at floating potential (approximately +30 V respect to the grounded cathode); at ground potential; and at -60 V. An atomic force microscopy study showed that the Ni film morphology was affected by the bias condition of the substrate. The morphology of carbonaceous species depended on Ni-films characteristics. FE-SEM and TEM analyses have shown that nanofibers growth was favoured on Ni coatings deposited at -60 V whereas nanotubes grew mainly on Ni coatings obtained at floating and ground potentials. Hence, this new method to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition. © 2009 Elsevier B.V. All rights reserved.
author	Escobar, Mariano Martín Giuliani, Leandro Estanislao Candal, Roberto Jorge Lamas, Diego Germán Caso, Alvaro Grondona, Diana Elena Goyanes, Silvia Nair Marquez, Adriana B.
author_facet	Escobar, Mariano Martín Giuliani, Leandro Estanislao Candal, Roberto Jorge Lamas, Diego Germán Caso, Alvaro Grondona, Diana Elena Goyanes, Silvia Nair Marquez, Adriana B.
author_sort	Escobar, Mariano Martín
title	Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc
title_short	Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc
title_full	Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc
title_fullStr	Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc
title_full_unstemmed	Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc
title_sort	carbon nanotubes and nanofibers synthesized by cvd on nickel coatings deposited with a vacuum arc
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v495_n2_p446_Escobar http://hdl.handle.net/20.500.12110/paper_09258388_v495_n2_p446_Escobar
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_version_	1768543999127191552

Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc

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