An ultrasensitive and broadband transparent ultrasound transducer for ultrasound and photoacoustic imaging in-vivo
SCIE
SCOPUS
- Title
- An ultrasensitive and broadband transparent ultrasound transducer for ultrasound and photoacoustic imaging in-vivo
- Authors
- Cho, Seonghee; Kim, Minsu; Ahn, Joongho; Kim, Yeonggeun; Lim, Junha; Park, Jeongwoo; Kim, Hyung Ham; Kim, Won Jong; Kim, Chulhong
- Date Issued
- 2024-02
- Publisher
- Nature Publishing Group
- Abstract
- AbstractTransparent ultrasound transducers (TUTs) can seamlessly integrate optical and ultrasound components, but acoustic impedance mismatch prohibits existing TUTs from being practical substitutes for conventional opaque ultrasound transducers. Here, we propose a transparent adhesive based on a silicon dioxide-epoxy composite to fabricate matching and backing layers with acoustic impedances of 7.5 and 4–6 MRayl, respectively. By employing these layers, we develop an ultrasensitive, broadband TUT with 63% bandwidth at a single resonance frequency and high optical transparency ( > 80%), comparable to conventional opaque ultrasound transducers. Our TUT maximises both acoustic power and transfer efficiency with maximal spectrum flatness while minimising ringdowns. This enables high contrast and high-definition dual-modal ultrasound and photoacoustic imaging in live animals and humans. Both modalities reach an imaging depth of > 15 mm, with depth-to-resolution ratios exceeding 500 and 370, respectively. This development sets a new standard for TUTs, advancing the possibilities of sensor fusion.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/120805
- DOI
- 10.1038/s41467-024-45273-4
- Article Type
- Article
- Citation
- Nature Communications, vol. 15, no. 1, 2024-02
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- There are no files associated with this item.
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