Related Experiment Video
Updated: Jul 3, 2025
07:12
Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials
Published on: September 13, 2024
2.1K
Fully Printable and Reconfigurable Hufu-type Electroluminescent Devices for Visualized Encryption.
Ziqing Luo1, Wenfu Chen1, Mengnan Lai1
1College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|February 13, 2024
Summary
Inspired by ancient Chinese tallies, scientists created reconfigurable electroluminescent devices using a special polymer gel. These stretchable devices can be disassembled and reassembled over 1000 times, enabling new encryption display systems.
Area of Science:
- Materials Science
- Optoelectronics
- Polymer Chemistry
Background:
- Conventional electroluminescent (EL) devices are typically integral, limiting their reconfigurability and application scope.
- Ancient Chinese Hufu, a two-part imperial authorization token, provides a conceptual model for modular device design.
Purpose of the Study:
- To design and fabricate a novel reconfigurable electroluminescent device inspired by the Hufu concept.
- To develop a stretchable and adhesive polymer gel composite for transparent electrodes in EL devices.
- To demonstrate the potential of reconfigurable EL devices for applications like encryption and changeable displays.
Main Methods:
- Separated an integral EL device into two parts: an EL layer (Part A) and a transparent electrode (Part B).
- Utilized an adhesive and stretchable polymer gel composite as the transparent electrode material.
- Investigated the performance of the reconfigurable EL devices through repeated disassembly and reassembly tests.
- Explored the compatibility of the polymer gel precursor ink with various coating and printing technologies.
Main Results:
- Achieved robust yet reversible contact between the EL layer and transparent electrode using the polymer gel composite.
- Demonstrated high-performance and stretchable EL devices that maintain ≈81% of initial luminance after 1000 disassembly/reassembly cycles.
- Confirmed the compatibility of the polymer gel precursor ink with spin-coating, inkjet printing, dispensing, and brush painting.
- Successfully demonstrated proof-of-concept applications including an EL encrypted password and a content-changeable digital clock.
Conclusions:
- The Hufu-inspired reconfigurable EL device design, enabled by a novel polymer gel composite, offers high durability and reusability.
- The developed technology paves the way for advanced encryption display systems and adaptable electronic interfaces.
- The material's compatibility with diverse printing techniques suggests scalability for future manufacturing.
