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Laser-generated ultrasound with optical fibres using functionalised carbon nanotube composite coatings

Colchester, RJ; Mosse, CA; Bhachu, DS; Bear, JC; Carmalt, CJ; Parkin, IP; Treeby, BE; ... Desjardins, AE; + view all (2014) Laser-generated ultrasound with optical fibres using functionalised carbon nanotube composite coatings. APPLIED PHYSICS LETTERS , 104 (17) , Article ARTN 173502. 10.1063/1.4873678. Green open access

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Abstract

Optical ultrasound transducers were created by coating optical fibres with a composite of carbon nanotubes (CNTs) and polydimethylsiloxane (PDMS). Dissolution of CNTs in PDMS to create the composite was facilitated by functionalisation with oleylamine. Composite surfaces were applied to optical fibres using dip coating. Under pulsed laser excitation, ultrasound pressures of 3.6 MPa and 4.5 MPa at the coated end faces were achieved with optical fibre core diameters of 105 and 200 μm, respectively. The results indicate that CNT-PDMS composite coatings on optical fibres could be viable alternatives to electrical ultrasound transducers in miniature ultrasound imaging probes.

Type: Article
Title: Laser-generated ultrasound with optical fibres using functionalised carbon nanotube composite coatings
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.4873678
Publisher version: http://dx.doi.org/10.1063/1.4873678
Additional information: © 2014 Author(s).. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office
URI: http://discovery.ucl.ac.uk/id/eprint/1431037
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