Transparent ultrasonic transducers based on relaxor ferroelectric crystals for advanced photoacoustic imaging.

ABSTRACT: Photoacoustic imaging is a promising non-invasive functional imaging modality for fundamental research and clinical diagnosis. However, achieving capillary-level resolution, wide field-of-view, and high frame rates remains challenging. To address this, we propose a transparent ultrasonic transducer design using our developed transparent Pb(In_1/2Nb_1/2)O₃-Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ crystals. Our fabrication technique incorporates quartz-glass-and-epoxy matching layers with low-resistance indium-tin-oxide electrodes through a brass-ring based structure, enabling a high frequency (28.5 MHz), wide bandwidth (78%), and enhanced pulse-echo sensitivity (2.5 V under 2-μJ pulse excitation). Our Pb(In_1/2Nb_1/2

SUBMITTER: Qiu C 

PROVIDER: S-EPMC11618688 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature