Coating Provides ‘IR Camouflage’
CAMBRIDGE, Mass., Oct. 22, 2013 — Military camouflage has taken a step forward with the discovery of a coating that, when heated past a certain temperature, looks colder to thermal cameras. A team of applied physicists at Harvard School of Engineering and Applied Sciences (SEAS) tested the coating by placing a material on a hot plate and watching it through an IR camera as the temperature rose. At first, the sample behaved as expected, giving off more IR light as it was heated: At 60 °C, it appeared blue-green to t...