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Controllable Structural Colored Screen for Real-Time Display via Near-Infrared Light
Chao Huang1, Hanbing Zhang1, Shuangye Yang1
1College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
ACS Applied Materials & Interfaces
|April 16, 2020
Summary
Researchers developed a simple method to create tunable, color-changing colloidal crystals using heat-sensitive films. This innovation offers promising applications in advanced displays and anti-counterfeiting technologies.
Area of Science:
- Materials Science
- Nanotechnology
- Photonics
Background:
- Stimuli-responsive materials integrated into colloidal crystals offer versatile sensing capabilities for various environmental factors.
- Current methods for integrating these materials are often complex and inefficient, limiting practical applications.
Purpose of the Study:
- To develop a facile and high-quality fabrication method for stimuli-responsive colloidal crystals.
- To create tunable, structural colored films with applications in information storage and anti-counterfeiting.
Main Methods:
- Fabrication of colloidal nanoparticle assemblies using hydrophilic-modified thermosensitive films.
- Large-scale, cost-effective screen printing of thermosensitive structural colored (TSSC) films.
- Utilizing near-infrared (NIR) laser irradiation to induce localized heating and temperature changes.
Main Results:
- Successfully prepared flexible, angle-independent TSSC films with excellent quality.
- Demonstrated that NIR laser heating can alter the photonic bandgap (PBG) intensity of the colloidal crystals.
- Achieved obvious changes in PBG intensity, enabling tunable structural coloration.
Conclusions:
- The developed method provides an efficient strategy for preparing advanced colloidal crystals.
- The highly thermosensitive structural colored screen shows significant potential for information storage, anti-counterfeiting, and real-time display applications.
