Thin film cooling device diagram (IMAGE) University of California - Los Angeles Caption The device’s polymer films expand and contract like an accordion to pump heat away from a source, cooling it by about 16 degrees Fahrenheit. Credit UCLA Soft Materials Research Laboratory Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.