Material	Thermochromic materials
	Thermochromic materials change reversibly colour with changes in temperature. They can be made as semi-conductor compounds, from liquid crystals or using metal compounds. The change in colour happens at a determined temperature, which can be varied doping the material. They are used to make paints, inks or are mixed to moulding or casting materials for different applications.
Category	Responsive (smart) materials, Colour changing materials
Products	Thermochromic T-shirt Temptoos
References	Detco Enterprise Matsui International, Inc.
Environmen- tal notes	Creation: Some older types of thermocromic materials are made using mercury, and are therefore poisoneous.
Photo	Thomas Nissen (Computer graphics)
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