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Proceedings Paper

Study of local photomodification of nanomaterials using near-field optics
Author(s): W. D. Bragg; Katyayani Seal; Viktor A. Podolskiy; Vladimir P. Safonov; Jane G. Zhu; Vladimir M. Shalaev; Z. Charles Ying
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Paper Abstract

Thin films of randomly distributed silver nanoparticles are studied experimentally using photon scanning tunneling microscopy and theoretically using real-space renormalization group method. The studies reveal large variations of local optical intensity at sub-wavelength scales. In addition, irradiation of the film by nanosecond laser pulses is observed to yield substantial changes in the local optical response. The threshold for the photomodification is less than 10 mJ/cm2. It is believed that particles within some areas of nanometer scales are restructured during nanosecond laser irradiation. The geometric changes in turn result in modification of the local optical intensity.

Paper Details

Date Published: 22 September 1999
PDF: 8 pages
Proc. SPIE 3791, Near-Field Optics: Physics, Devices, and Information Processing, (22 September 1999); doi: 10.1117/12.363845
Show Author Affiliations
W. D. Bragg, New Mexico State Univ. (United States)
Katyayani Seal, New Mexico State Univ. (United States)
Viktor A. Podolskiy, New Mexico State Univ. (United States)
Vladimir P. Safonov, New Mexico State Univ. (Russia)
Jane G. Zhu, New Mexico State Univ. (United States)
Vladimir M. Shalaev, New Mexico State Univ. (United States)
Z. Charles Ying, New Mexico State Univ. (United States)


Published in SPIE Proceedings Vol. 3791:
Near-Field Optics: Physics, Devices, and Information Processing
Suganda Jutamulia; Motoichi Ohtsu; Toshimitsu Asakura, Editor(s)

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