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Wearable Biosensor for Monitoring Sweat Electrolytes

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The sensor is the tiny black box on the shirt's pocket.

The research demonstrates the potential of using wearable ion sensors for the real-time monitoring of sweat biomarkers, facilitating personalized healthcare development and athlete training management.

Credit: Isao Shitanda/TUS Japan

Researchers at Japan's Tokyo University of Science (TUS) and Yamagata University engineered an innovative sweat biosensor by depositing a flexible chloride ion sensor onto a textile substrate through heat-transfer printing.

The wearable device can quantify the blood's ionic concentration through sweat without causing irritation or allergic reactions.

Heat-transfer printing prevents skin irritation, while the textile's wicking action stabilizes electrical contract by diffusing sweat evenly between the electrodes.

The biosensor reliably measured chloride ion levels in the sweat of a volunteer who exercised on a static bicycle for half an hour.

TUS' Isao Shitanda said, "Since chloride is the most abundant electrolyte in human sweat, measuring its concentration provides an excellent indicator of the body's electrolyte balance and a useful tool for the diagnosis and prevention of heat stroke."

From Tokyo University of Science (Japan)
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Abstracts Copyright © 2023 SmithBucklin, Washington, D.C., USA


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