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A wireless optoelectronic skin patch for light delivery and thermal monitoring


ABSTRACT: Summary 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. Graphical abstract Highlights • A wireless optoelectronic patch measures photothermal effects on the skin• A transparent nanowire sensor enables co-located light delivery and thermal monitoring• Experiments demonstrate closed-loop thermal regulation and blood flow monitoring Health technology; Optoelectronics; Bioelectronics;

SUBMITTER: Kim H 

PROVIDER: S-EPMC8571508 | biostudies-literature |

REPOSITORIES: biostudies-literature

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