Publications by authors named "Dengchong Feng"
Article Synopsis
- Researchers are tackling the challenge of creating stable wrinkling structures for secure optical information storage and encryption, which often suffer from delamination issues.
- A new strategy combining a hydrogel layer with fluorescent molecules and polydimethylsiloxane helps establish durable wrinkles that can control light reflection and fluorescence by adjusting the ratio of the two layers.
- The resulting interfacial wrinkling structures not only enhance light emission under UV radiation but also protect the details needed for authentication from damage, making them suitable for various applications in information storage and security.
As counterfeit techniques continue to evolve, ensuring the security of conventional "static" encryption methods becomes increasingly challenging. Here, the viscoelasticity-controlled relaxation is introduced for the first time in a bilayer wrinkling system by regulating the density of hydrogen bond networks in polymer to construct a "dynamic" encryption material. The wrinkling surface can manipulate light during the dynamic relaxation process, exhibiting three stages with frosted glass, structural color, and mirror reflection.
View Article and Find Full Text PDF