eprintid: 1419130 rev_number: 74 eprint_status: archive userid: 608 dir: disk0/01/41/91/30 datestamp: 2014-02-13 19:44:03 lastmod: 2021-10-06 22:36:26 status_changed: 2018-12-03 16:06:31 type: proceedings_section metadata_visibility: show item_issues_count: 0 creators_name: Mosse, CA creators_name: Colchester, RJ creators_name: Bhachu, DS creators_name: Zhang, EZ creators_name: Papakonstantinou, I creators_name: Desjardins, AE title: Fiber-optic Ultrasound Transducers with Carbon/PDMS Composite Coatings ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F46 divisions: F42 keywords: Science & Technology, Physical Sciences, Life Sciences & Biomedicine, Optics, Radiology, Nuclear Medicine & Medical Imaging, Laser-generated ultrasound, photoacoustic, optical fiber, carbon nanotubes, PDMS, FILM note: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. abstract: 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 μm 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. date: 2014-02-01 publisher: SPIE official_url: https://doi.org/10.1117/12.2037283 vfaculties: VENG vfaculties: VENG oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green verified: verified_manual elements_source: WoS-Lite elements_id: 926921 doi: 10.1117/12.2037283 lyricists_name: Colchester, Richard lyricists_name: Desjardins, Adrien lyricists_name: Mosse, Charles lyricists_name: Papakonstantinou, Ioannis lyricists_name: Zhang, Edward lyricists_id: COLCH20 lyricists_id: AEDES16 lyricists_id: CAMOS59 lyricists_id: IPAPA54 lyricists_id: EZZHA53 full_text_status: public series: Proceedings of SPIE publication: PHOTONS PLUS ULTRASOUND: IMAGING AND SENSING 2014 volume: 8943 place_of_pub: San Francisco, CA, United States pagerange: 89430P-1 pages: 7 event_title: SPIE BIOS 2014 - Photons Plus Ultrasound: Imaging and Sensing event_location: San Francisco, CA event_dates: 02 February 2014 - 05 February 2014 issn: 0277-786X book_title: Proceedings of SPIE Photons Plus Ultrasound: Imaging and Sensing 2014 editors_name: Oraevsky, AA editors_name: Wang, LV citation: Mosse, CA; Colchester, RJ; Bhachu, DS; Zhang, EZ; Papakonstantinou, I; Desjardins, AE; (2014) Fiber-optic Ultrasound Transducers with Carbon/PDMS Composite Coatings. In: Oraevsky, AA and Wang, LV, (eds.) Proceedings of SPIE Photons Plus Ultrasound: Imaging and Sensing 2014. (pp. 89430P-1). SPIE: San Francisco, CA, United States. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/1419130/1/Colchester_Mosse_fiber%20optic%20ultrasound%20transducers%20with%20carbon%20PDMS%20composite%20coatings.pdf