Wearable transparent PVDF transducer for photoacoustic imager in body sensor network

Ya Han Liu, Fu Sung Lin, Li Xiang Chen, Hsin Yi Su, You Chi Hsu, Soma Pal, Yeong Her Wang, Chih Hsien Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A wearable transparent ultrasonic transducer was demonstrated with superior photoacoustic (PA) imaging performance regarding 116.8% -3dB fractional bandwidth, 4.75MHz center frequency, and 20times 20times 36text{mm}-{3} volumetric imaging field. The wearable sensor was fabricated by sputtering 150nm thick amorphous Indium tin oxide (ITO) on the both sides of a 110um commercial Polyvinylidene fluoride (PVDF) film. A 532nm Nd:YAG laser with 5ns pulse width was used to generate co-register photoacoustic signals by delivering light into subjects through ITO and PVDF. A pencil lead with 0.3mm in diameter was used to evaluate the lateral resolution (400um). A 3D alphabet phantom made by a 3D printer were successfully imaged by self-designed PAI system. In Summary, the potential of using this acoustic sensor as a PA imager of wearable body sensor network applications was positive based on the results.

Original languageEnglish
Title of host publicationIUS 2020 - International Ultrasonics Symposium, Proceedings
PublisherIEEE Computer Society
ISBN (Electronic)9781728154480
DOIs
Publication statusPublished - 2020 Sep 7
Event2020 IEEE International Ultrasonics Symposium, IUS 2020 - Las Vegas, United States
Duration: 2020 Sep 72020 Sep 11

Publication series

NameIEEE International Ultrasonics Symposium, IUS
Volume2020-September
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Conference

Conference2020 IEEE International Ultrasonics Symposium, IUS 2020
CountryUnited States
CityLas Vegas
Period20-09-0720-09-11

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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