A smartwatch developed by University of California, Los Angeles (UCLA) and Columbia University researchers can measure cortisol levels in perspiration, building on previous innovations.
The device integrates a strip of adhesive film that collects tiny sweat samples with a sensor that detects the stress hormone using engineered DNA strands called aptamers.
When cortisol binds, aptamers change shape and alter electric fields at the surface of a transistor.
"I anticipate that the ability to monitor variations in cortisol closely across time will be very instructive for people with psychiatric disorders," said UCLA's Anne Andrews.
From UCLA Newsroom
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