image: A hydrogel electronic skin worn on a human wrist with continuous control and data logging via a mobile phone. The hydrogel smart skin consists of a flexible and reusable unit bearing power supply, control, readout and wireless communication, and a stretchable, disposable transducer batch with four heating elements and temperature sensors. Hydrogels can transport liquids to and from the skin, for example supplying water-soluble medication or removing sweat. This material relates to a paper that appeared in the June 21,2017, issue of Science Advances, published by AAAS. The paper, by D. Wirthl at Johannes Kepler University Linz in Linz, Austria, and colleagues was titled, "Instant tough bonding of hydrogels for soft machines and electronics." view more
Credit: [Credit: Soft Electronics Laboratory, Linz Institute of Technology]