Artículo
Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc
Escobar, M.; Giuliani, Leandro Estanislao
; Candal, Roberto Jorge
; Lamas, Diego Germán
; Caso, Alvaro
; Rubiolo, Gerardo Hector
; Grondona, Diana Elena
; Goyanes, Silvia Nair
; Marquez, Adriana Beatriz
Fecha de publicación:
04/2010
Editorial:
Elsevier Science Sa
Revista:
Journal of Alloys and Compounds
ISSN:
0925-8388
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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.
Palabras clave:
Nanostructured Materials
,
Thin Films
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Articulos(INFINA)
Articulos de INST.DE FISICA DEL PLASMA
Articulos de INST.DE FISICA DEL PLASMA
Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Escobar, M.; Giuliani, Leandro Estanislao; Candal, Roberto Jorge; Lamas, Diego Germán; Caso, Alvaro; et al.; Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc; Elsevier Science Sa; Journal of Alloys and Compounds; 495; 2; 4-2010; 446-449
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