Multiscaled polarization effects in Suneve coronata (Lepidoptera) and other insects: application to anti-counterfeiting of banknotes

Chirality-induced polarization effects in the cuticle of scarab beetles: 100 years after Michelson

“…One specific example for anti-counterfeiting of banknotes was proposed by Berthier et al [17] and further examples are found in the review by Lenau and Barfoed [6]. It has also been demonstrated that reflection from wing scales of Morpho butterflies are different in different vapours indicating that sensor applications are feasible [18].…”

Bio-Inspired Photonic Structures: Prototypes, Fabrications and Devices

“…The nanostructures having different magnitude in size therefore cancel out the macroscopic polarization effects ( Fig. 12(a)-(d)) [89].…”

“…Some literatures have well reviewed the field comprehensively. In the Chapter, we do not plan to pay attention to the overall structural coloration but only focus on a specific subject 'structural color mixing' [87][88][89][90][91][92]. In tiger beetles Cicindela oregona( Fig.…”

“…Inspired by color mixing researches, some novel applications based on polarization conversion are designed [89]. For instance, by etching periodic triangular-like grooves on surfaces of a flat multilayer, the film displays a coloration of green, which is actually a mixed color from yellow in the flat region and blue in the grooves in normal incidence, as shown in Fig.…”

Currency security and forensics: a survey

“…Research [46] shows, the scales of Lepidopetra and elytra of Coleoptera butterflies possess micro structures resulting in unique polarization effects. The scales create a unique complex texture with detail too minute for desktop publishing equipment to render and iridescence effect which could be applied to banknotes.…”