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Multi-Mode Elastic Full-Color Fluorescent Patterns for Multi-Visual Encryption
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DOI：10.1002/lpor.202400307.png)
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Abstract
En 中文
The development of multi-mode fluorescent patterns has attracted widespread attention, particularly for applications in high-density information storage and highly secure encryption. However, the fabrication process of multi-mode fluorescent patterns generally involves tedious and expensive steps. Specifically, in the fabrication technology of elastic full-color fluorescent patterns, there is still a lack of ideal patterning preparation technology that can overcome the solvent orthogonality problem associated with multi-color fabrication while ensuring both high elasticity and luminescence efficiency of the pattern. Herein, the multi-mode elastic fluorescent patterns are successfully fabricated by multiple transferring of the quantum dots (QDs) from the carrier substrates to the elastomeric PDMS substrate via femtosecond laser-induced forward transfer (FsLIFT) technology. Due to its solvent-free nature, absence of masking requirements, and no need for annealing during FsLIFT processing, the multiple transferred QD films achieve independent patterns and does not interfere with each other, providing a strong promise for the fabrication of multi-mode elastic full-color patterns. Based on these stretchable fluorescent patterns, multi-visual encryption techniques are successfully demonstrated. The proposed FsLIFT technology offers an efficient and straightforward strategy for fabricating multi-mode fluorescent patterns with potential applications in advanced commercial security information encryption and dynamic camouflage. The development of multi-mode fluorescent patterns has attracted widespread attention, particularly for applications in high-density information storage and highly secure encryption. Herein, the multi-mode elastic fluorescent patterns are successfully fabricated by multiple transferring the quantum dots (QDs) from the carrier substrates to the elastomeric substrate via femtosecond laser-induced forward transfer (FsLIFT) technology. Based on these stretchable fluorescent patterns, multi-visual encryption techniques are successfully demonstrated. image
Keywords:
femtosecond laser-induced forward transfer
multi-mode
pdms
quantum dots
stretchable
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