Custom design photoacoustic and ultrasound sensor fabrication with PVDF-TrFE/BaTiO3 nanocomposite film for high-resolution diagnostic imaging

Nagendra Singh; S. K. Biswas; Amit Kumar

doi:10.1117/12.2650563

9 March 2023 Custom design photoacoustic and ultrasound sensor fabrication with PVDF-TrFE/BaTiO₃ nanocomposite film for high-resolution diagnostic imaging

Nagendra Singh, S. K. Biswas, Amit Kumar

Author Affiliations +

Proceedings Volume 12379, Photons Plus Ultrasound: Imaging and Sensing 2023; 123790M (2023) https://doi.org/10.1117/12.2650563
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

In this work, we have developed PVDF-TrFE/BaTiO₃ composite thin film-based highly sensitive ultrasound (US) and photoacoustic (PA) transducer. The synthesized nanocomposite polymer-based sensor film has been grown layer by layer on the flat surface of a 9.00 mm diameter aluminum substrate. The fabricated transducer has been tested in pulse-eco mode and it shows high sensitivity with a peak-to-peak voltage 800 mV. Preliminary US and PA experiments have been performed with the aluminum block and multi-layer ink coated phantom. The central frequency of the obtained acoustic signal was found to be 44 MHz with an acoustic bandwidth of 32 MHz (72% of central frequency at -6 dB). The PA signals have been detected with the fabricated transducer and the estimated frequency spectrum shows multiple sub-band central frequencies varying from 17 MHz to 55 MHz. Due to its high sensitivity and broad bandwidth, the developed transducer can be used for high-resolution US and PA microscope imaging (PAI).

Conference Presentation

Citation Download Citation

Nagendra Singh, S. K. Biswas, and Amit Kumar "Custom design photoacoustic and ultrasound sensor fabrication with PVDF-TrFE/BaTiO₃ nanocomposite film for high-resolution diagnostic imaging", Proc. SPIE 12379, Photons Plus Ultrasound: Imaging and Sensing 2023, 123790M (9 March 2023); https://doi.org/10.1117/12.2650563

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