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11-16 April 2026
Conference 13006 > Paper 13006-32
Paper 13006-32

PVDF-TrFE/BSTO composite polymer based transducers for high resolution ultrasound and photoacoustic imaging

9 April 2024 • 15:50 - 16:10 CEST | Etoile B, Niveau/Level 1

Abstract

This work demonstrates the fabrication of high frequency ultrasound transducers, which is capable of sensing high frequency and broad bandwidth photoacoustic and ultrasound signals. For sensor film fabrication purposes, a piezoelectric composite polymer consisting of PVDF-TrFE (Polyvinylidene difluoride trifluoroethylene) and lab synthesized single crystal BSTO (Barium Strontium Titanate) nanofiller is developed. The piezoelectric efficiency after addition of BSTO is characterized using FTIR spectroscopy. The fabricated transducer is tested in the pulse echo mode and the central frequency is found to be 43 MHz with a bandwidth of 40 MHz (93% at -6dB). Photoacoustic signals of multiple frequencies are detected using the fabricated transducer. The high sensitivity and broad frequency spectrum of the transducer makes it a suitable candidate for high resolution photoacoustic and ultrasound imaging for biomedical imaging and nondestructive testing.

Presenter

Indian Institute of Science Education and Research Mohali (India)
Nagendra Singh is a PhD research scholar at IISER Mohali,India. He is working on ultrasound transducer fabrication using composite polymer materials, and their application in imaging biological tissues using ultrasound and photoacoustics.
Presenter/Author
Indian Institute of Science Education and Research Mohali (India)
Author
Shivam Rakhoulya
Indian Institute of Science Education and Research Mohali (India)
Author
Samir K. Biswas
Indian Institute of Science Education and Research Mohali (India)