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Proceedings Paper

Photoacoustic stability of gold nanorods embedded in biopolymeric scaffolds
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Paper Abstract

Gold nanorods exhibit intense optical absorbance in the near-infrared window of principal interest for applications in biomedical optics making them appealing as contrast agents in photoacoustic imaging and selective photothermolysis of cancer. However their photoinstability under laser irradiation 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 modifications of their optical absorption bands and substantial loss of photoacoustic conversion efficiency.

In this contribution we present an investigation of the photostability of gold nanorods embedded in biomimetic scaffolds by means of photoacustic experiments.

Paper Details

Date Published: 14 June 2013
PDF: 6 pages
Proc. SPIE 8800, Opto-Acoustic Methods and Applications, 88000E (14 June 2013); doi: 10.1117/12.2032546
Show Author Affiliations
Lucia Cavigli, Istituto di Fisica Applicata "Nello Carrara" (Italy)
Marella De Angelis, Istituto di Fisica Applicata "Nello Carrara" (Italy)
Fulvio Ratto, Istituto di Fisica Applicata "Nello Carrara" (Italy)
Paolo Matteini, Istituto di Fisica Applicata "Nello Carrara" (Italy)
Francesca Rossi, Istituto di Fisica Applicata "Nello Carrara" (Italy)
Francesca Tatini, Istituto di Fisica Applicata "Nello Carrara" (Italy)
Sonia Centi, Univ. degli Studi di Firenze (Italy)
Roberto Pini, Istituto di Fisica Applicata "Nello Carrara" (Italy)


Published in SPIE Proceedings Vol. 8800:
Opto-Acoustic Methods and Applications
Vasilis Ntziachristos; Charles P. Lin, Editor(s)

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