Surface topology specific metasurface holograms
Abstract
Metasurface holograms are usually realized on flat surface topologies. Here we show that flexible holographic metasurfaces can be designed to form an image when applied to arbitrary substrate shapes. We demonstrate that for nonflat surfaces the phase contribution of the substrate determines the symmetry properties of the image. The sensitivity of the hologram to the specific surface topology can be enhanced by engineering the distribution of the phase elements in the metasurface area. The results of this work pave the way for practical applications in security printing technologies, in addition to surface topology and polarization sensors.
Citation
Burch , J & Di Falco , A 2018 , ' Surface topology specific metasurface holograms ' , ACS Photonics , vol. 5 , no. 5 , pp. 1762-1766 . https://doi.org/10.1021/acsphotonics.7b01449
Publication
ACS Photonics
Status
Peer reviewed
ISSN
2330-4022Type
Journal article
Description
Funding: J.B. and A.D.F acknowledge support from EPSRC (grants No EP/M508214/1, EP/L017008/1).Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.