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Proceedings Paper

Radiative properties of the heated nanotips in close vicinity to the sample surface in vacuum
Author(s): G. V. Dedkov; A. A. Kyasov; E. G. Dedkova; R. I. Teghaev
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Paper Abstract

A heated probing tip of the scanning microscope being placed in close vicinity to, but not in atomically dense contact, the sample surface with smaller local temperature , may produce a very intensive microwave radiation flux onto the surface via evanescent modes of electromagnetic field. The necessary condition implies existence of overlapped absorption frequency domains both for the tip and sample materials. We consider this problem theoretically discussing several mechanisms of the heat transportation to and from the tip: a heating from the background radiation of vacuum chamber, the contact heating through the tip holder, and cooling by radiation emitted onto the surface. We have estimated the possible effects at different tip and sample materials and conclude that the largest radiation effects (at room temperature conditions) have to occur when using materials with similar dielectric properties. A construction of an oscillating microwave source is proposed using normal vibration mode of the scanning probe microscope. Numerical estimations of the output power and radiation frequency range involved are given.

Paper Details

Date Published: 18 April 2006
PDF: 6 pages
Proc. SPIE 6180, Photonics, Devices, and Systems III, 618028 (18 April 2006); doi: 10.1117/12.675859
Show Author Affiliations
G. V. Dedkov, Balkarian State Univ. (Russia)
A. A. Kyasov, Balkarian State Univ. (Russia)
E. G. Dedkova, Balkarian State Univ. (Russia)
R. I. Teghaev, Balkarian State Univ. (Russia)

Published in SPIE Proceedings Vol. 6180:
Photonics, Devices, and Systems III
Pavel Tománek; Miroslav Hrabovský; Miroslav Miler; Dagmar Senderákova, Editor(s)

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