Electronic tattoo (e-tattoo) technology could be the key to tracking a natural body response which makes the palms of someone's hands wet when they are excited or nervous, and helping people that suffer from mental health conditions.
Although this bodily response - called electrodermal activity - has been known for a long time, devices used to track it have traditionally been bulky, unreliable and highly visible, which perpetuates social stigma.
Instead, the team at the University of Texas at Austin and Texas A&M University have created a graphene-based e-tattoo for electrodermal activity (EDA sensing) that is nearly invisible. The new device attaches to the palm of the hand and connects to a smartwatch.
"It's so unobstructive that people sometimes forget they had them on, and it also reduces the social stigma of wearing these devices in such prominent places on the body," said Nanshu Lu, professor in the Department of Aerospace Engineering...