Idvac Introduces Layer-by-Layer Nano-Etching Technique for Multispectral Colours

Idvac Ltd, based in Manchester, UK, has unveiled a ground-breaking method for fabricating bespoke multispectral colours using a layer- by-layer nano-etching process.

Traditionally, achieving vibrant colours involves pigments, inks, or printing. Idvac has developed an alternative approach with no print or inks used. The process begins with vacuum metallising a specially developed single optical coating onto a standard aluminium metallised film within a standard roll-to-roll vacuum web metalliser.

According to the company, what makes the method truly unique is the controlled chemical etching used for the layer-by-layer removal of 5nm of the coating. The result is a spectrum of bright colours, including red, blue, yellow, and silver. Laser dry etching can also be employed for precise removal, providing flexibility in the fabrication process. The effect is created as metallised aluminium acts as a mirror, reflecting the different colours produced through the etching process.