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Bleaching of sol-gel glass film with embedded gold nanoparticles by thermal poling

Bleaching of sol-gel glass film with embedded gold nanoparticles by thermal poling
Bleaching of sol-gel glass film with embedded gold nanoparticles by thermal poling
Gold clusters embedded in glass are expected to be hard to dissolve in the form of ions since gold is essentially a nonreactive metal. In spite of that, bleaching of Au-doped nanocomposite sol-gel glass film on a soda-lime glass substrate is demonstrated in which electric-field thermal poling is employed to effectively dissolve randomly distributed gold nanoparticles (15 nm in diameter) embedded in a low conductivity sol-gel glass film with a volume filling factor as small as 2.3%. The surface plasmon absorption band at 520 nm is suppressed in the region covered by the anodic electrode. The phenomenon is explained by the ionization of the gold nanoparticles and the redistribution of gold ions in the glass matrix due to the action of the extremely high electrostatic field locally developed during poling.
0003-6951
1-3
Mezzapesa, Francesco P.
92b5463a-439e-4750-bb8f-5e44a0d1f717
Carvalho, Isabel C.S.
8a49bc30-867d-48fb-b06a-2a28a3a45623
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Kawazu, Mitsuhiro
ce536e55-7adb-43b8-a584-6614b28abb69
Sakaguchi, Koichi
96822a3c-4adc-40d7-b350-3e713b1a039f
Mezzapesa, Francesco P.
92b5463a-439e-4750-bb8f-5e44a0d1f717
Carvalho, Isabel C.S.
8a49bc30-867d-48fb-b06a-2a28a3a45623
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Kawazu, Mitsuhiro
ce536e55-7adb-43b8-a584-6614b28abb69
Sakaguchi, Koichi
96822a3c-4adc-40d7-b350-3e713b1a039f

Mezzapesa, Francesco P., Carvalho, Isabel C.S., Kazansky, Peter G., Kawazu, Mitsuhiro and Sakaguchi, Koichi (2006) Bleaching of sol-gel glass film with embedded gold nanoparticles by thermal poling. Applied Physics Letters, 89 (183121), 1-3. (doi:10.1063/1.2382728).

Record type: Article

Abstract

Gold clusters embedded in glass are expected to be hard to dissolve in the form of ions since gold is essentially a nonreactive metal. In spite of that, bleaching of Au-doped nanocomposite sol-gel glass film on a soda-lime glass substrate is demonstrated in which electric-field thermal poling is employed to effectively dissolve randomly distributed gold nanoparticles (15 nm in diameter) embedded in a low conductivity sol-gel glass film with a volume filling factor as small as 2.3%. The surface plasmon absorption band at 520 nm is suppressed in the region covered by the anodic electrode. The phenomenon is explained by the ionization of the gold nanoparticles and the redistribution of gold ions in the glass matrix due to the action of the extremely high electrostatic field locally developed during poling.

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Published date: 30 October 2006

Identifiers

Local EPrints ID: 46940
URI: http://eprints.soton.ac.uk/id/eprint/46940
ISSN: 0003-6951
PURE UUID: a76ea796-2e99-418f-85f2-f82d524eaa6c

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Date deposited: 24 Jul 2007
Last modified: 18 Jun 2021 16:32

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