Triband Metasurface

Infrared information invisible in VIS

Synergistically manipulates visible structural color and MWIR/LWIR selective emissivity, with infrared information completely hidden under visible imaging, enabling cross-band optical security.

Huang, Xuemei · Ju, Zezhao · Lin, Hongtao · Tang, Huajie · Guo, Chenyue · Fan, Fan · Ma, Yaoguang · Luo, Yue · Li, Wei · Zhong, Wenqi · Zhao, Dongliang

Nano Letters 2025

Specifications

region MWIR emissivity
{'zh': '', 'en': '81,'} LWIR
region MWIR emissivity
{'zh': '', 'en': '21,'} LWIR

Advantages

MWIR and LWIR information completely hidden in VIS

Able to encode complex information and misleading encryption