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...ShareThis: Mobile vs Desktop: A Cross Device User StudyHey, sunlight! This might work out after all.