Light induced selective heating of nanostructured pyrolitic graphite surfaces investigated by Raman scattering
Artikel i vetenskaplig tidskrift, 2013

Nanostructured surfaces of highly oriented pyrolytic graphite (HOPG) were characterized by Raman spectroscopy. The disc-shape nanostructures similar to 110 nm high and with two different diameters similar to 147 and 217 nm are prepared on HOPG using hole-mask colloidal lithography and oxygen reactive ion etching. Significant roughening of the HOPG surface is introduced by the nano-fabrication process, but the nano-disc structures preserves their crystalline structure. Resonant light absorption results in selective heating of nanostructures, although the surrounding medium remains relatively unaffected. Temperature differences of up to 350 K were measured under irradiation with similar to 11 mW/mu m(2). Further increase of the light intensity leads to combustion of structures.

fabrication

oxidation

spectroscopy

lithography

Highly oriented pyrolitic graphite

spectra

oriented pyrolytic-graphite

oxygen plasma

Nanostructured

air

carbon nanotubes

Light induced selective heating

Författare

J. F. Cardenas

Norut Narvik AS

Hans Fredriksson

Chalmers, Teknisk fysik, Kemisk fysik

Bengt Herbert Kasemo

Chalmers, Teknisk fysik, Kemisk fysik

Dinko Chakarov

Chalmers, Teknisk fysik, Kemisk fysik

Chemical Physics

0301-0104 (ISSN)

Vol. 415 232-236

Ämneskategorier

Fysikalisk kemi

DOI

10.1016/j.chemphys.2013.01.023