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Titolo:
Molecule corrals as templates for the formation of metal and silicon nanostructures
Autore:
McBride, JD; Van Tassell, B; Jachmann, RC; Beebe, TP;
Indirizzi:
Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA Univ Utah Salt Lake City UT USA 84112 Chem, Salt Lake City, UT 84112 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 18, volume: 105, anno: 2001,
pagine: 3972 - 3980
SICI:
1520-6106(20010510)105:18<3972:MCATFT>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCANNING-TUNNELING-MICROSCOPY; ORIENTED PYROLYTIC-GRAPHITE; NANOMETER-SIZED PITS; BASAL-PLANE; ELECTROCHEMICAL DEPOSITION; SILVER PARTICLES; MONOLAYER; SURFACES; FILMS; GOLD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Beebe, TP Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA Univ Utah Salt Lake City UT USA 84112 t Lake City, UT 84112 USA
Citazione:
J.D. McBride et al., "Molecule corrals as templates for the formation of metal and silicon nanostructures", J PHYS CH B, 105(18), 2001, pp. 3972-3980

Abstract

Gold and silicon nanostructures have been produced by condensing vacuum-evaporated materials and semiconductors onto nanometer-sized etch-pit templates preformed on the surface of highly oriented pyrolytic graphite. Billionsof monodispersed monolayer-deep etch-pit templates, or "molecule corrals",can be produced in a range of diameters from a few to hundreds of nanometers due to the linear etch rate of carbon atom removal as a function of time. Evaporation and subsequent annealing of gold and silicon have resulted inthe formation of metal and semiconductor nanostructures on the graphite basal plane. The size and shape of the nanostructures were examined using scanning tunneling microscopy, and the total coverage of the nanostructures and other chemical properties were examined using X-ray photoelectron spectroscopy. By varying the ratio of the total amount of material evaporated to the diameter of the etch-pit templates, three distinct types of metal nanostructures were observed to form on the molecule corral templates: rings, disks, and mesas. This method of producing nanostructures is a process that isinherently parallel and allows direct control over the final diameters andshapes (in two and three dimensions) of the nanostructures formed.

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Documento generato il 13/07/20 alle ore 07:26:14