New Caltech wearable sensor sets record for solar power efficiency

The FPSC on Gao’s wearable sweat sensor has a record-breaking PCE exceeding 31 percent under indoor light illumination.

Sweat, like blood, can tell us a lot about a person’s health. And conveniently, it’s a lot less invasive to collect.

This is the premise behind the wearable sweat sensors developed by Caltech’s Wei Gao, assistant professor of medical engineering, Heritage Medical Research Institute Investigator, and Ronald and JoAnne Willens Scholar.

Over the past five years, Gao has steadily added features to his wearables, making them capable of reading out levels of salts, sugars, uric acid, amino acids, and vitamins as well as more complex molecules like C-reactive protein that can provide timely assessment of certain health risks. Most recently, in collaboration with Martin Kaltenbrunner’s group at Johannes Kepler University Linz in Austria, Gao has powered these wearable biosensors with a flexible solar cell.

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Source: Pasadena Now

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