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New wearable sensor can diagnose diseases from sweat

Scientists develop a new wristband-type wearable device that can analyse sweat to diagnose and monitor diseases like diabetes and cystic fibrosis.

Stanford scientists have developed a new wristband-type wearable device that can analyse sweat to diagnose and monitor diseases like diabetes and cystic fibrosis.The new sensor collects sweat, measures its molecular constituents, such as chloride ions and glucose and then transmits the results for analysis and diagnostics.Unlike old-fashioned sweat collectors, the new device does not require patients to sit still for a long time while sweat accumulates in the collectors.

The two-part system of flexible sensors and microprocessors sticks to the skin, stimulates the sweat glands and then detects the presence of different molecules and ions based on their electrical signals.The more chloride in the sweat, for example, the more electrical voltage is generated at the sensor’s surface.

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