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
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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