If you look closely at a Gatorade commercial featuring Serena Williams called “You Fuel Us, We’ll Fuel You,” you may have noticed she is wearing a small patch.  That patch is a biosensor being used as a health monitor—in this case, by assessing sweat. Biosensors are currently being tested in athletes, but have other applications in the world of health. The sensor itself is a soft, flexible patch that adheres to the skin and is placed directly on the forearm or back. It’s a little larger than a quarter and about the same thickness. Fluids can be collected non-invasively and many... Read More