Conformable, stretchable sensor to record bladder wall stretch
Hannah, Stuart and Brige, Pauline and Ravichandran, Aravind and Ramuz, Marc (2019) Conformable, stretchable sensor to record bladder wall stretch. ACS Omega, 4 (1). 1907–1915. ISSN 2470-1343
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Abstract
A soft, conformable, biocompatible strain sensor based on ultra-thin stretchable electronics is reported. The sensor comprises gold thin films patterned on a 50 μm thick polyurethane substrate to produce resistive-based strain sensors for monitoring bladder stretch. The sensor responds linearly as a function of strain from 0 to 50%, with an increasing sensitivity as a function of sensor length. The sensor displays good stability with very little hysteresis when it is subjected to cycling between 0 and a maximum strain of 50%, with the largest deviation between 0 and 50% strain of ∼19% after 100 cycles attributed to the sensor with the longest length (6 mm) because it physically stretches by a greater distance than sensors with a shorter length. “Breaking” tests on the sensor reveal that shorter sensors can withstand higher maximum strains than longer sensors. A biocompatible hydrogel adhesive is used to attach sensors in vitro to the outside wall of a pig’s bladder, and sensor performance is studied with respect to repeated bladder filling and emptying to investigate stretch changes. By monitoring bladder stretch and thus volume noninvasively, the sensor provides a route for developing new treatment options for various urological conditions.
Creators(s): |
Hannah, Stuart ![]() | Item type: | Article |
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ID code: | 66804 |
Notes: | This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
Keywords: | biosensors, electrochemistry, hydrogels, mechanical properties, ployurethanes, thin films, Bioengineering, Biomedical Engineering |
Subjects: | Technology > Engineering (General). Civil engineering (General) > Bioengineering |
Department: | Faculty of Engineering > Biomedical Engineering |
Depositing user: | Pure Administrator |
Date deposited: | 04 Feb 2019 16:24 |
Last modified: | 21 Jan 2021 10:43 |
Related URLs: | |
URI: | https://strathprints.strath.ac.uk/id/eprint/66804 |
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