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Proceedings Paper

Optimization of the photoacoustic conversion of gold nanorods embedded in biopolymeric scaffolds
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Paper Abstract

Gold nanorods exhibit intense optical absorbance in the near-infrared region of principal interest for applications in biomedical optics, which evokes their use to improve contrast in photoacoustic imaging and selective photothermolysis of cancer. However their limited photostability remains a drawback of practical concern. In particular, when GNRs are irradiated with nanosecond laser pulses in resonance with their plasmon oscillations, there may occur phenomena like reshaping into spherical particles, as well as fragmentation at higher optical fluences, which result into dramatic modifications of their optical absorption bands and substantial loss of photoacoustic conversion efficiency. In this contribution we present an experimental investigation of stability and photoacoustic conversion efficiency from gold nanorods embedded in biomimetic scaffolds.

Paper Details

Date Published: 4 March 2013
PDF: 6 pages
Proc. SPIE 8581, Photons Plus Ultrasound: Imaging and Sensing 2013, 85810Z (4 March 2013); doi: 10.1117/12.2003173
Show Author Affiliations
Lucia Cavigli, IFAC-CNR (Italy)
Marella De Angelis, IFAC-CNR (Italy)
Fulvio Ratto, IFAC-CNR (Italy)
Paolo Matteini, IFAC-CNR (Italy)
Francesca Rossi, IFAC-CNR (Italy)
Sonia Centi, Univ. degli Studi di Firenze (Italy)
Roberto Pini, IFAC-CNR (Italy)

Published in SPIE Proceedings Vol. 8581:
Photons Plus Ultrasound: Imaging and Sensing 2013
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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