On the Application of Stacked Periodic Tungsten Grating Nanostructure in Wide-Range Plasmonic Sensing and Other Photonic Devices

Colored, Covert Infrared Display through Hybrid Planar‐Plasmonic Cavities

“…[ 11,12 ] Most importantly, thermal emissive labels using tailored infrared (IR) emissivity implemented using photonic structures have received significant research attention as a promising anti‐counterfeiting candidate owing to their facile design and fabrication process for a textured metal surface such as photonic crystal cavities, [ 13–16 ] nano‐antennas, [ 17–19 ] metamaterials, [ 20–22 ] and gratings. [ 23–26 ] These strategically designed emissive fingerprints are imperceptible to human eyes, and can only be revealed using a thermographic instrument. [ 27–29 ]…”

“…[11,12] Most importantly, thermal emissive labels using tailored infrared (IR) emissivity implemented using photonic structures have received significant research attention as a pro mising anti-counterfeiting candidate owing to their facile design and fabrication process for a textured metal surface such as photonic crystal cavities, [13][14][15][16] nanoantennas, [17][18][19] metamaterials, [20][21][22] and gratings. [23][24][25][26] These strategically designed emissive fingerprints are imperceptible to human eyes, and can only be revealed using a thermographic instrument. [27][28][29] The key requirement for the universal use of anti-counterfeiting labels such as banknotes, passports, identity cards, tax stamps, and consumer goods is the ability to be blended into the surrounding colored objects (such as camouflage and decoration) while containing multiple encoded information sets.…”