A sensor has been developed: it is attached to the skin and monitors health by analyzing sweat

The device will be of interest to representatives of the healthcare industry and especially athletes, as it

can be used to control overheating orto adjust the optimal amount of exercise. The researchers are also collaborating with Penn State School of Medicine on disease monitoring. The device has one color-coded chamber for pH, a second for glucose, and a third for sodium. All three of these indicators are markers of the disease.

We want to be able to analyzethe sweat that comes from daily exercise or from the heat because it has a lot of biomarkers in it like pH and glucose that will be a really good indicator for disease progression or diagnosis.

Huanyu "Larry" Cheng, assistant professor of engineering and mechanical sciences at Penn State

The device will be on a device similar toon the patch, it will be applied to the skin near the sweat glands. Inside there will be several chambers that have a hydrophobic, water-repellent valve next to the silicone rubber hole. The channel has a hydrophilic, water-attracting coating for easy sweat collection. Unlike other devices requiring two holes, one hole reduces the amount of evaporation, which leads to an increase in the storage time of the liquid for subsequent analysis.

On-site analysis can be performed withusing the colorimetric approach, in which the color coded analyte or, in other words, the analyte is preliminarily placed in the chambers. This sensitive chemical reacts to pH or glucose levels. In addition, researchers can analyze sweat at different points in time using various cameras called chrono-sampling.

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