transparent gif


Ej inloggad.

Göteborgs universitets publikationer

Optical and AFM study of ion-synthesised silver nanoparticles in thin surface layers of SiO2 glass

Författare och institution:
Vladimir Popok (Institutionen för fysik (GU)); A. V. Gromov (-); V. I. Nuzhdin (-); A. L. Stepanov (-)
Publicerad i:
JOURNAL OF NON-CRYSTALLINE SOLIDS, 356 ( 25-27 ) s. 1258-1261
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
Silver nanoparticles were synthesised in thin surface layers of SiO 2 glass by 30 keV implantation of Ag+ ions with various fluences. Properties of the composites were studied using optical spectroscopy and atomic force microscopy. Optical spectra reveal specific absorption bands assigned to the surface plasmon resonance of the nucleated Ag nanoparticles. The spectral positions of absorption maxima are found to be dependent on the ion fluence that corresponds to the difference in mean sizes of the nanoparticles. Microscopy study shows formation of hemispherical nanosize bumps on the glass surfaces which represent a near-surface fraction of the partly towered nanoparticles. Post-implantation annealing leads to a shift of the plasmon maxima and to a change of the band widths. The transformations of optical spectra are in good agreementwith the change of nanoparticle sizes found by atomic force microscopy. Possible mechanisms governing the redistribution of the nanoparticles in size under the thermal treatment are suggested and discussed. © 2010 Elsevier B.V. All rights reserved.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
silicate glass, au nanoparticles, implantation, laser, sapphire
Postens nummer:
Posten skapad:
2011-04-20 12:30

Visa i Endnote-format

Göteborgs universitet • Tel. 031-786 0000
© Göteborgs universitet 2007