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Multimodal Visible-Infrared Subwavelength Structures with Decoupled Modulation of Reflection Spectra
Yitong Zhou1, Yuqin Xiong1, Yili Liu1
1State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
ACS Applied Materials & Interfaces
|April 24, 2025
Summary
Researchers developed a new strategy to evaluate and achieve decoupled modulation of visible-infrared reflectivity. This enables advanced applications like dynamic displays and anticounterfeiting technologies.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Visible-infrared reflectivity is crucial for object identity and has applications in display, camouflage, and anticounterfeiting.
- Existing methods struggle to concisely quantify the decoupled modulation of multiple reflectivity characteristics.
Purpose of the Study:
- To propose a systematic evaluation strategy for decoupled reflectivity modulation.
- To present subwavelength structures capable of complex decoupled modulation of four visible-infrared reflectivity characteristics.
- To demonstrate a multiple identity information display based on these structures.
Main Methods:
- Development of a single quantitative indicator to assess decoupling degree and changing range.
- Fabrication of subwavelength structures using a controllable electrochemical process.
- Evaluation of modulation performance using the proposed strategy.
Main Results:
- A novel evaluation strategy was successfully proposed and validated.
- Subwavelength structures demonstrated complex decoupled modulation of four reflectivity characteristics.
- The fabricated structures showed robustness and were suitable for device implementation.
Conclusions:
- The proposed evaluation strategy effectively quantifies reflectivity modulation flexibility.
- The developed subwavelength structures offer significant potential for advanced optical applications.
- A functional multiple identity information display was successfully implemented, showcasing the practical utility of the research.
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