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, M., Giuliani, L., Candal, R.J., Lamas, D.G., Caso, A., Rubiolo, G., Grondona, D., Goyanes, S., Márquez, A.
Formato: JOUR
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: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
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spelling todo:paper_09258388_v495_n2_p446_Escobar2023-10-03T15:46:27Z Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc Escobar, M. Giuliani, L. Candal, R.J. Lamas, D.G. Caso, A. Rubiolo, G. Grondona, D. Goyanes, S. Márquez, A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, M.
Giuliani, L.
Candal, R.J.
Lamas, D.G.
Caso, A.
Rubiolo, G.
Grondona, D.
Goyanes, S.
Márquez, A.
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.
format JOUR
author Escobar, M.
Giuliani, L.
Candal, R.J.
Lamas, D.G.
Caso, A.
Rubiolo, G.
Grondona, D.
Goyanes, S.
Márquez, A.
author_facet Escobar, M.
Giuliani, L.
Candal, R.J.
Lamas, D.G.
Caso, A.
Rubiolo, G.
Grondona, D.
Goyanes, S.
Márquez, A.
author_sort Escobar, M.
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
url http://hdl.handle.net/20.500.12110/paper_09258388_v495_n2_p446_Escobar
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