Security Applications of Metasurface Holograms with Colour Print Features

Recent advancements in nanofabrication have demonstrated new possibilities for enhancing the design of optical security devices (OSDs) that display different images under various lighting conditions, including those combining colour printing with holography. However, the complexity of designing such devices and the challenge of scaling them up for real-world use remain significant hurdles.

Addressing this gap, a team of researchers affiliated to the University of Melbourne and Shanghai Jiao Tong University – Seyed Saleh Mousavi Khaleghi, Dandan Wen, Jasper Cadusch, and Kenneth B Crozier – have introduced a novel approach that harmonises colour printing with holography.

Their study, titled ‘High-Resolution Multicolour Holograms Encoded into Colour Print Images with Hybrid Dielectric/ Plasmonic Metasurfaces’, which has been published in Applied Physica, proposes a hybrid metasurface hologram device encoded with colour print images, which was examined through simulations.