Graphene Device Sops Up Sunlight, Heats to 160 Degrees Celsius in Seconds Graphene Device Sops Up Sunlight, Heats to 160 Degrees Celsius in Seconds Related Posts:Graphene Temporary Tattoo Tracks Vital SignsThinking about different aspects of location tracking in terms of...Gotta love LA's microclimates. 2 miles away from work it's…Switched to long-sleeved shirts & started wearing sweaters this…