Research thrust · 01

Ultrasonic Devices and Acoustic Biointerfaces

See & Act Through Tissue

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Platforms and enabling science

Flexible transducer architectures fabricated to maintain acoustic contact on curved, moving anatomy.

Matching layers, backings, and hydrogels characterized to transmit ultrasound through soft interfaces.

Device concepts evaluated for using acoustic energy to act as well as observe.

Communication concepts developed for deeply placed sensor implants.

Experimental approach: An integrated flexible ultrasonic platform in vitro and with five healthy volunteers under the reported protocol.
Key result: The paper reports wireless continuous monitoring and an in-vivo mean relative error of 11.17% across the tested bladder volumes.
Scope and limitations: The proof-of-concept participant set did not include patients with lower urinary tract dysfunction or overweight and obese patients.

Experimental approach: Epoxy–polyetheramine matching and backing layers in a conformal wearable-ultrasound platform.
Key result: The gradient matching layer increased fractional bandwidth from 15% to 54%; the viscoelastic backing increased SNR by 9 dB in the reported configuration.
Scope and limitations: Coupling performance depends on composition, geometry, frequency, and contact condition.

Flagship paper

This paper establishes the integrated wearable platform and its application-specific validation. Nature Communications, 2024.

Electronics-free, wearable ultrasonic tags for on-demand health monitoring in epidermal and ocular applicationsSupports compact epidermal and ocular acoustic-tag concepts · Device, 2026
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Metamaterial-Integrated Bioadhesive Hydrogel Transducer for Long-Term Ultrasound MonitoringSupports long-term coupling and transducer-material integration · Advanced Materials Technologies, 2026
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Passive ultrasonic communication link for deep-tissue sensor implantsSupports implantable acoustic communication · Device, 2025
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