Chameleon Dyes Note: I am revising the following information. I had the opportunity to speak with one of the directors of LCR Hallcrest, a company that makes chameleon dyes. The pencils in the picture are called chameleon pencils. While chameleons change colors in response to different stimuli, such as temperature, emotions, and illness, the dye […]
Color Changing Chemicals
Thermochromic (TC) materials change color in response to temperature changes. The two basic types of thermochromic substances are liquid crystals and Leuco dyes. Liquid Crystals (LCs) can be highly temperature sensitive, change to many colors, and are more expensive than leuco dyes. The picture shows a liquid crystal sheet. Prior to being touched with a hand, […]