Ring Ultrasound Transducer Based Miniaturized Photoacoustic Imaging System

Ajay Dangi, Sumit Agrawal, Jedidiah Lieberknecht, Jason Zhang, Sri Rajasekhar Kothapalli

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

17 Scopus citations


In recent years photoacoustic microscopy (PAM) systems have attracted significant attention from biomedical researchers due to their ability to provide label-free imaging of hemoglobin (vasculature), lipids, and melanin with high spatial and temporal resolutions, even from > 1 mm depths inside biological tissue. This work reports the development of a low-cost and miniaturized photoacoustic imaging device for microscopy applications. A ring ultrasound transducer with 2.5 mm outer diameter and 0.5 mm inner diameter is fabricated using a 150 μm thick PZT element working as the piezoelectric layer. A fiber coupled pulsed laser diode is coaxially fed through the ring transducer that is mounted on the top of a ferrule. Raster scanning of the integrated device generated three-dimensional images of a tissue-mimicking phantom.

Original languageEnglish (US)
Title of host publication2018 IEEE SENSORS, SENSORS 2018 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538647073
StatePublished - Dec 26 2018
Event17th IEEE SENSORS Conference, SENSORS 2018 - New Delhi, India
Duration: Oct 28 2018Oct 31 2018

Publication series

NameProceedings of IEEE Sensors
ISSN (Print)1930-0395
ISSN (Electronic)2168-9229


Other17th IEEE SENSORS Conference, SENSORS 2018
CityNew Delhi

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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