Multifunctional Dielectric Metasurfaces Consisting of Color Holograms Encoded into Color Printed Images
Dandan Wen, Jasper J Cadusch, Jiajun Meng, Kenneth B Crozier
Advanced Functional Materials | Wiley | Published : 2020
A hologram records the wavefront of light from an object, but it is usually not an image itself, and looks unintelligible under diffuse ambient light. Here a new paradigm to encode a color hologram onto a color printed image is experimentally demonstrated. The printed image can be directly viewed under white light illumination, while a low‐crosstalk color holographic image can be seen when the device is illuminated with red (R), green (G), and blue (B) laser beams. The device is a dielectric metasurface that consists of titanium dioxide (TiO2) cones on a glass substrate. The dimensions of the TiO2 cones are chosen to allow them to support visible‐wavelength resonances, thereby producing the ..View full abstract
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Awarded by Australian Research Council
The authors acknowledge financial support from Australian Research Council under Grant No. DP180104141. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF).