INQUIMAE   12526
INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
artículos
Título:
Carbon nanotubes and nanofibers synthesized by CVD on nickel coatings deposited with a vacuum arc
Autor/es:
ESCOBAR, M.M.; GIULIANI, L.; CANDAL R.J.; LAMAS D.G.; CASO A.; RUBIOLO G.; GRONDONA, D.; GOYANES S.; MÁRQUEZ, A.
Revista:
JOURNAL OF ALLOYS AND COMPOUNDS
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Año: 2010 vol. 495 p. 446 - 446
ISSN:
0925-8388
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 +30V 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 −60V whereas nanotubes grew mainly on Ni coatings obtained at floating and ground potentials. Hence, thisnewmethod to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition. grew mainly on Ni coatings obtained at floating and ground potentials. Hence, thisnewmethod to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition. 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 −60V whereas nanotubes grew mainly on Ni coatings obtained at floating and ground potentials. Hence, thisnewmethod to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition. grew mainly on Ni coatings obtained at floating and ground potentials. Hence, thisnewmethod to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition. −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 −60V whereas nanotubes grew mainly on Ni coatings obtained at floating and ground potentials. Hence, thisnewmethod to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition. grew mainly on Ni coatings obtained at floating and ground potentials. Hence, thisnewmethod to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition. −60V whereas nanotubes grew mainly on Ni coatings obtained at floating and ground potentials. Hence, thisnewmethod to produce the precursor can be optimized to obtain nanotubes or nanofibers varying the substrate bias for the Ni deposition.