A Biomedical Sensor Based on Resonant Absorption of Ultrasound Waves in Hydrogel-based Resonators

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Smart hydrogels can be tailored to undergo a vol- ume change in response to an analyte. The potential biocompatibility of these materials has made them a very promising material for biomedical sensing applica- tions. To fully exploit the benefits of these materials, a fast and reliable transduction mechanism is necessary. Here we report a new sensing method based on track- ing the resonance absorption of ultrasound waves inside smart hydrogel pillars. This sensing mechanism enables a cost-effective and completely passive implantable sens- ing component with no need for transcutaneous connec- tions. In addition, it is possible to employ a variety of different smart hydrogels with this sensing approach.

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Journal: TechConnect Briefs
Volume: TechConnect Briefs 2019
Published: June 17, 2019
Pages: 412 - 414
Industry sector: Medical & Biotech
Topics: Biomaterials, Diagnostics & Bioimaging
ISBN: 978-0-9988782-8-7