Biomimetic Colored Coating toward Robust Display under Hostile Conditions

Quanyong Cheng ¹, Jingyi Chen ¹, Wenlong Cai ¹

⁰Key Lab of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.

Acs Applied Materials & Interfaces +

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August 26, 2024

View abstract on PubMed

Summary

Researchers developed a durable, angle-independent structural color coating inspired by bird feathers. This superamphiphobic coating maintains its vibrant blue color even when exposed to liquids, enabling new applications in displays and sensors.

Area Of Science

Materials Science
Optics
Nanotechnology

Background

Structural colors offer angle-independent properties valuable for displays and sensors.
Liquid infiltration can degrade structural color performance due to refractive index changes.
Biomimetic approaches can provide robust solutions for color stability.

Purpose Of The Study

To develop a coating with angle-independent structural color and superamphobicity.
To mimic the color stability and water repellency observed in bird feathers.
To create a durable coating for applications in extreme environments.

Main Methods

Fabrication of a coating using a simple deposition technique.
Creation of channel-type structures composed of hollow silica and air nanostructures (~200 nm).
Optimization of color saturation and superamphobicity through parameter manipulation and addition of black substances.

Main Results

The coating exhibits a robust sapphire blue structural color that is angle-independent.
The color remains stable despite intense liquid intrusion, mimicking Eastern Bluebird feathers.
Achieved high color saturation and superamphobicity, with excellent durability under harsh conditions.

Conclusions

The biomimetic coating provides a stable, angle-independent structural color and superamphobicity.
This technology has potential for long-term use in displays, sensors, and extreme environments.
The developed method offers a simple and effective route for creating advanced functional coatings.

Keywords:

biomimetic coating liquid repellency robust display structural color