Anti-counterfeiting labels of photonic crystals with versatile structural colors.

ABSTRACT: Labels with structural color based on photonic crystals (PCs) have drawn significant attention due to their unique color emission, offering promising solutions for anti-counterfeiting applications. However, to meet the demands of future high-security applications, conventional structural color labels require further improvement. This study introduces a novel approach to fabricate highly encrypted anti-counterfeiting labels by combining close-packed and non-close-packed monolayers of nanoparticles (NPs) onto adhesive surfaces. The photonic crystals, arranged in specific geometric shapes, exhibit overt-covert characteristics. The hidden label is only revealed under specific external triggers, such as attaching or removing a transparent cover film. The principle of color modulation of the pho

SUBMITTER: Minh NH 

PROVIDER: S-EPMC11528909 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature