A remarkable self adhesive sheet material printed with thermochromic liquid crystal 'ink'. Changes colour (bright blue) when heated above 27ºC. Potential applications are many and varied. e.g, temperature indication/warnings, body jewellery, advertising displays i.e. attach a resistance wire to the rear and pass a small current to cause dramatic colour changes to the front 'screen'. 450 x 300mm. Note: Typical applications require only very small pieces - e.g. 25 x 25mm