New Wearable Sensor Detects Stress Hormone In Sweat (ieee.org) 10
An anonymous reader quotes a report from IEEE Spectrum: Today, a team of researchers at Stanford, led by materials science and engineering associate professor Alberto Salleo and postdoctoral research fellow Onur Parlak, announced in Science Advances that they've developed a wearable patch that can determine how much cortisol someone is producing in seconds, using sweat drawn from the skin under the patch. [Cortisol, a steroid hormone, goes up when a person is under physical or emotional strain.] The stretchy patch pulls in the sweat through perforations to a reservoir. A membrane on top of the reservoir allows charged ions, like sodium and potassium, to pass through. Cortisol, which has no charge, can't pass, and instead blocks the charged ions. Signals sent from an electrical sensor in the patch can be used to detect these backups and determine how much cortisol is in the sweat.
The prototype cortisol detection patch channels sweat into a reservoir; a membrane selectively lets charged ions through, and the amount of these ions detected can be translated into a reading of cortisol levels in the sweat. Parlak tested the prototype on several runners, and reported that the cortisol levels detected by the wearable sensor patch matched those obtained by running samples of the runners' sweat through an ELISA (enzyme-linked immunosorbent assay) test that takes several hours.
The prototype cortisol detection patch channels sweat into a reservoir; a membrane selectively lets charged ions through, and the amount of these ions detected can be translated into a reading of cortisol levels in the sweat. Parlak tested the prototype on several runners, and reported that the cortisol levels detected by the wearable sensor patch matched those obtained by running samples of the runners' sweat through an ELISA (enzyme-linked immunosorbent assay) test that takes several hours.
That's not all! (Score:2)
I was in the lab when they wanted people to help test if it worked right. We all had sensors attached to our bodies but as a fellow genius, I was thinking outside the box, so I immediately pulled off a sensor and dropped my drawers so that I could test how the sensor reacted to urine but wouldn't you know it, before I even peed on it, everyone else's sensors started going off! It's clear I've made a breakthrough in pee detection technology! ;)
Will get rich selling to Pentagon (Score:3)
The Police State's Gonna Love This (Score:1)
Finally, a lie detector sensor that genuinely works!
Fear Sweat (Score:1)