First Electronic Tattoo Printed Directly Onto SkinAmanda Warren First there were electronic stick-on tattoos with stretchable batteries now the electronic sensors can be printed directly onto and soon into human skin. Welcome to the world of epidermal electronics as introduced by John Rogers, a materials scientist at the University of Illinois (U-C). Rogers Group has introduced variations of flexible electronics before, with the group exploring various applications such as batteries, solar cells, and wireless equipment. But the newest innovation allows the ultrathin mesh electronics (essentially a computer) to be placed directly on the surface of the skin, eliminating the need for the elastomer backing previously used as an adhesive. The stick-on sensors were very temporary and couldnt withstand much. The skin-printable sensors stay on with a spray-able bandage and can last for two weeks, but thats why under-the-skin embedded sensors are on the way for more permanency. With this accomplishment the group continues to move forward, further developing the flexibility and capability of the already astoundingly thin and intricate battery. The expressed goal is better, targeted healthcare sensory and data. Which is why the work is funded by The Office of Naval Research, The Department of Energy, and surprise The Bill Melinda Gates Foundation? Stretchable lithium-ion batterywith video Article and images source: Read other articles by Amanda Warren 