TY - GEN A1 - Mosse, CA A1 - Colchester, RJ A1 - Bhachu, DS A1 - Zhang, EZ A1 - Papakonstantinou, I A1 - Desjardins, AE PB - SPIE SP - 89430P ID - discovery1419130 UR - https://doi.org/10.1117/12.2037283 T3 - Proceedings of SPIE N2 - Novel ultrasound transducers were created with a composite of carbon nanotubes (CNTs) and polydimethylsiloxane (PDMS) that was dip coated onto the end faces of optical fibers. The CNTs were functionalized with oleylamine to allow for their dissolution in xylene, a solvent of PDMS. Ultrasound pulses were generated by illuminating the composite coating with pulsed laser light. At distances of 2 to 16 mm from the end faces, ultrasound pressures ranged from 0.81 to 0.07 MPa and from 0.27 to 0.03 MPa with 105 and 200 ?m core fibers, respectively. Using an optical fiber hydrophone positioned adjacent to the coated 200 µm core optical fiber, ultrasound reflectance measurements were obtained from the outer surface of a sheep heart ventricle. The results of this study suggest that ultrasound transducers that comprise optical fibers with CNT-PDMS composite coatings may be suitable for miniature medical imaging probes. Y1 - 2014/02/01/ KW - Science & Technology KW - Physical Sciences KW - Life Sciences & Biomedicine KW - Optics KW - Radiology KW - Nuclear Medicine & Medical Imaging KW - Laser-generated ultrasound KW - photoacoustic KW - optical fiber KW - carbon nanotubes KW - PDMS KW - FILM N1 - This version is the version of record. For information on re-use, please refer to the publisher?s terms and conditions. EP - 1 AV - public SN - 0277-786X CY - San Francisco, CA, United States TI - Fiber-optic Ultrasound Transducers with Carbon/PDMS Composite Coatings ER -