Revealing Invisible Photonic Inscriptions: Images from Strain.

ABSTRACT: Photonic structural materials have received intensive interest and have been strongly developed over the past few years for image displays, sensing, and anticounterfeit materials. Their "smartness" arises from their color responsivity to changes of environment, strain, or external fields. Here, we introduce a novel invisible photonic system that reveals encrypted images or characters by simply stretching, or immersing in solvents. This type of intriguing photonic material is composed of regularly arranged core-shell particles that are selectively cross-linked by UV irradiation, giving different strain response compared to un-cross-linked regions. The images reversibly appear and disappear when cycling the strain and releasing it. The unique advantages of this soft polymer opal system compa

SUBMITTER: Ding T 

PROVIDER: S-EPMC4485955 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature