Miniaturized, highly sensitive ultrasound sensor for photoacoustic imaging

https://phys.org/news/2022-06-miniaturized-highly-sensitive-ultrasound-sensor.html

"optimized dimeter microfiber 7μm... Polydimethylsiloxane material high elastic-optical coefficient to encapsulate microfiber... sensitivity of linear microfiber ultrasound sensor improved order of magnitude... low noise equivalent pressure 153Pa and broad response bandwidth 14MHz (-10dB)... can be used for detection of weaker signals, optimizing microfiber and detection improve sensitivity and bandwidth... signal-to-noise ratio 31dB at depth 12mm... axial and lateral resolutions 65μm and 250μm at 5mm depth"

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