Alles, EJ;
Heo, J;
Noimark, S;
Colchester, R;
Parkin, I;
Baac, HW;
Desjardins, A;
(2017)
Acoustical characterisation of carbon nanotube-loaded polydimethylsiloxane used for optical ultrasound generation.
In:
Proceedings of the 2017 IEEE International Ultrasonics Symposium (IUS).
IEEE: Washington, D.C., USA.
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Abstract
An optical ultrasound generator was used to perform broadband (2-35 MHz) acoustical characterisation measurements of a nanocomposite comprising carbon nanotubes (CNT) and polydimethylsiloxane (PDMS), a composite that is commonly used as optical ultrasound generator. Samples consisting of either pure PDMS or CNT-loaded PDMS were characterised to determine the influence of CNTs on the speed of sound and power-law acoustic attenuation parameters. A small weight fraction (<; 1.8%) of added CNTs was found to yield a prominent increase in the exponent of the power law, resulting in a significant increase in acoustic attenuation at higher frequencies. The speed of sound was found to be nearly identical, however. These results could prove useful in the numerical modelling and design of future optical ultrasound sources based on CNT-loaded PDMS.
| Type: | Proceedings paper |
|---|---|
| Title: | Acoustical characterisation of carbon nanotube-loaded polydimethylsiloxane used for optical ultrasound generation |
| Event: | 2017 IEEE International Ultrasonics Symposium (IUS) |
| Location: | Washington DC |
| Dates: | 06 September 2017 - 09 September 2017 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ULTSYM.2017.8092343 |
| Publisher version: | http://dx.doi.org/10.1109/ULTSYM.2017.8092343 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Optical ultrasound generator, polydimethylsiloxane, carbon nanotubes, acoustical characterisation, acoustical attenuation |
| UCL classification: | UCL 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 Med Phys and Biomedical Eng UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10038062 |
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