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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 10 — Oct. 5, 2012

High-efficiency optical ultrasound generation using one-pot synthesized polydimethylsiloxane-gold nanoparticle nanocomposite

Nan Wu, Ye Tian, Xiaotian Zou, Vinicius Silva, Armand Chery, and Xingwei Wang  »View Author Affiliations


JOSA B, Vol. 29, Issue 8, pp. 2016-2020 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002016


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Abstract

Photoacoustic generation is an attractive alternative to generate ultrasound due to its broad bandwidth and high frequency capabilities. However, the challenges in low generation efficiency need to be addressed. In order to address this issue, a one-pot synthesized polydimethylsiloxane-gold nanoparticle (PDMS/Au NP) nanocomposite was utilized to generate ultrasonic pulses excited by a nanosecond laser. The enhanced efficiency of the photoacoustic signal was investigated by varying the concentration and the thickness of the nanocomposite film. The optimal peak-to-peak amplitude of the acoustic signal was observed to be 189.49 kPa under the laser energy density of 13mJ/cm2 at 1.8 mm away from the nanocomposite film, when the thickness and the concentration of the film were 450 μm and 1.79 wt. %, respectively. Furthermore, the efficiency of the photoacoustic generation was increased 3 orders of magnitude compared to the aluminum thin film. The results indicate that high photoacoustic generation efficiency could be achieved through the PDMS/Au NPs nanocomposite.

© 2012 Optical Society of America

OCIS Codes
(110.7170) Imaging systems : Ultrasound
(170.5120) Medical optics and biotechnology : Photoacoustic imaging
(170.7170) Medical optics and biotechnology : Ultrasound
(110.5125) Imaging systems : Photoacoustics

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: April 11, 2012
Manuscript Accepted: May 28, 2012
Published: July 18, 2012

Virtual Issues
Vol. 7, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Nan Wu, Ye Tian, Xiaotian Zou, Vinicius Silva, Armand Chery, and Xingwei Wang, "High-efficiency optical ultrasound generation using one-pot synthesized polydimethylsiloxane-gold nanoparticle nanocomposite," J. Opt. Soc. Am. B 29, 2016-2020 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josab-29-8-2016

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