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Optoacoustic response from graphene-based solutions embedded in optical phantoms by using 905-nm high-power diode-laser assemblies
Author(s): Luca Leggio; Daniel C. Gallego; Sandeep Babu Gawali; Ehsan Dadrasnia; Miguel Sánchez; Sergio Rodríguez; Marta González; Guillermo Carpintero; Marek Osiński; Horacio Lamela
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Paper Abstract

During the last two decades, optoacoustic imaging has been developed as a novel biomedical imaging technique based on the generation of ultrasound waves by means of laser light. In this work, we investigate the optoacoustic response from graphene-based solutions by using a compact and cost-effective system based on an assembly of several 905-nm pulsed high-power diode lasers coupled to a bundle of 200-μm diameter- core optical fibers. The coupled light is conveyed into a lens system and focused on an absorber consisting of graphene-based nanomaterials (graphene oxide, reduced graphene oxide, and reduced graphene-oxide/gold-nanoparticle hybrid, respectively) diluted in ethanol and hosted in slightly scattering optical phantoms. The high absorption of these graphene-based solutions suggests their potential future use in optoacoustic applications as contrast agents.

Paper Details

Date Published: 17 March 2016
PDF: 12 pages
Proc. SPIE 9708, Photons Plus Ultrasound: Imaging and Sensing 2016, 97083M (17 March 2016); doi: 10.1117/12.2207245
Show Author Affiliations
Luca Leggio, Univ. Carlos III de Madrid (Spain)
Daniel C. Gallego, Univ. Carlos III de Madrid (Spain)
Sandeep Babu Gawali, Univ. Carlos III de Madrid (Spain)
Ehsan Dadrasnia, Univ. Carlos III de Madrid (Spain)
Miguel Sánchez, Univ. Carlos III de Madrid (Spain)
Sergio Rodríguez, Univ. Carlos III de Madrid (Spain)
Marta González, Univ. Carlos III de Madrid (Spain)
Guillermo Carpintero, Univ. Carlos III de Madrid (Spain)
Marek Osiński, The Univ. of New Mexico (United States)
Horacio Lamela, Univ. Carlos III de Madrid (Spain)


Published in SPIE Proceedings Vol. 9708:
Photons Plus Ultrasound: Imaging and Sensing 2016
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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