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Title: A wireless optoelectronic skin patch for light delivery and thermal monitoring
Authors: Kim, Han-Joon 
Jin, Yunxia 
Achavananthadith, Sippanat
Lin, Rongzhou 
Ho, John S. 
Keywords: Bioelectronics
Health technology
Issue Date: 1-Oct-2021
Publisher: Elsevier Inc.
Citation: Kim, Han-Joon, Jin, Yunxia, Achavananthadith, Sippanat, Lin, Rongzhou, Ho, John S. (2021-10-01). A wireless optoelectronic skin patch for light delivery and thermal monitoring. iScience 24 (11) : 103284. ScholarBank@NUS Repository.
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
Abstract: Wearable optoelectronic devices can interface with the skin for applications in continuous health monitoring and light-based therapy. Measurement of the thermal effect of light on skin is often critical to track physiological parameters and control light delivery. However, accurate measurement of light-induced thermal effects is challenging because conventional sensors cannot be placed on the skin without obstructing light delivery. Here, we report a wearable optoelectronic patch integrated with a transparent nanowire sensor that provides light delivery and thermal monitoring at the same location. We achieve fabrication of a transparent silver nanowire network with >92% optical transmission that provides thermoresistive sensing of skin temperature. By integrating the sensor in a wireless optoelectronic patch, we demonstrate closed-loop regulation of light delivery as well as thermal characterization of blood flow. This light delivery and thermal monitoring approach may open opportunities for wearable devices in light-based diagnostics and therapies. © 2021 The Author(s)
Source Title: iScience
ISSN: 2589-0042
DOI: 10.1016/j.isci.2021.103284
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
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