When heat travels between two objects that are not touching, it flows differently at the smallest scales--distances on the order of the diameter of DNA, or 1/50,000 of a human hair. Researchers have been aware of this for decades, however, they haven't understood the process. Now, in a unique, ultra-low vibration lab at the University of Michigan, engineers have measured how heat radiates from one surface to another in a vacuum at distances down to 2 nanometers. Pictured here is a view inside the ultra-high vacuum scanning thermal microscope that was used to measure temperature fluxes at the nanoscale.
Visit Website | Image credit: Pramod Reddy, University of Michigan, Ann Arbor