Analyzing Sweat On Paper Pads (image) American Institute of Physics Share Print E-Mail Caption The evaporation of sweat on paper pads could be used for fluid transport in wearables over long periods of time. The resulting dry layer of caked salts would preserve a "time-stamped" record of biomarkers of interest. Credit Orlin D. Velev and co-authors, NC State University Usage Restrictions Journalists may use this image only with appropriate credit. Share Print E-Mail 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.