Venting Patch (IMAGE) Duke University Caption A prototype patch made of hybrid nylon/silver vents that open in response to a person’s sweat and close again once dry. Requiring no energy, the vents open because the moist nylon must expand but the silver can only curl in on itself. Credit Po-Chun Hsu, Duke University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.