Wearable health sensors capable of continuously monitoring changes in the body have become a massive development in health technology in recent years.
These devices, along with medical patches and wound dressings, often need to remain in contact with the skin for hours or days. However, the water-rich hydrogels commonly used in such products can trap heat and sweat, potentially causing irritation and disrupting sensor readings.
In a new study published in Nature, engineers led by a team at the Massachusetts Institute of Technology (MIT) report developing a hydrogel containing a stable, three-dimensional network of microscopic, air-filled channels.
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