This wearable sensor can detect tension level from dampness

Scientists have developed a waterproof wearable patch, which when used directly to the skin, absorbs dampness and within seconds assesses how much cortisol — tension hormone — a person is producing.

scientific tests that measure cortisol, which rises and falls logically throughout the day, give an objective gauge of exciting or physical tension and can help doctors tell if a patient’s adrenal or pituitary gland is working properly.

While current methods require waiting a number of days for an outcome from a lab, with the novel patch, a user just needs to dampness enough to listen, apply the patch and connect it to a device for investigation, giving the results within seconds.

“We are mostly interested in dampness sensing because it offers non-invasive and continuous monitoring of different biomarkers for a range of physiological conditions,” said lead author, Onur Parlak from Stanford University, US.

“This offers a novel approach for the early discovery of various diseases and evaluation of sports performance,” Parlak added, in the paper published in the journal Science Advances.

If the prototype version of the wearable device becomes a reality, it could permit people with an imbalance to monitor their own levels at home, the researchers said.

A fast-working test like this may also reveal the touching state of young, even non-verbal, children who might not otherwise be able to have dealings that they feel the tension, they noted.

The team developed a stretchy, rectangular sensor about a membrane that specifically binds only to cortisol. Stuck to the skin, it sucks in dampness submissively through holes in the bottom of the patch. A waterproof layer protects the patch from contamination.

The dampness pools in a reservoir, which is top by the cortisol-sensitive membrane.

Charged ions like sodium or potassium, also found in dampness, pass through the membrane unless they are blocked by cortisol. It’s those backed up charged ions the sensor detects, not the cortisol itself.

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