Multimodal dynamic and unclonable anti-counterfeiting using robust diamond microparticles on heterogeneous substrate

Multimodal dynamic and unclonable anti-counterfeiting using robust diamond microparticles on heterogeneous substrate

Blog Article

Abstract The growing prevalence of copyright products worldwide poses serious threats to economic security and human health.Developing advanced anti-counterfeiting materials with physical unclonable functions offers an attractive defense strategy.Here, we report multimodal, dynamic and unclonable anti-counterfeiting labels based on diamond microparticles containing silicon-vacancy centers.These chaotic microparticles are heterogeneously grown on silicon substrate by chemical vapor deposition, facilitating low-cost scalable fabrication.

The intrinsically unclonable functions are introduced by the randomized features GLOSSY LIPSTICK PEONY DEW #505 of each particle.The highly stable signals of photoluminescence from silicon-vacancy centers and light scattering from diamond microparticles can enable high-capacity optical encoding.Moreover, time-dependent encoding is achieved by modulating photoluminescence signals of silicon-vacancy centers via air oxidation.Exploiting the robustness of diamond, the developed labels exhibit ultrahigh stability in extreme application scenarios, including harsh chemical environments, sweatshorts high temperature, mechanical abrasion, and ultraviolet irradiation.

Hence, our proposed system can be practically applied immediately as anti-counterfeiting labels in diverse fields.