Multi-scale structural characterization of ceramic-based photonic glasses for structural colors

Area of Science:

• Materials Science
• Nanotechnology
• Optics

Background:

• Structural colors offer advantages over pigmented colors, including fade resistance and use of non-toxic materials.
• Color in these materials originates from light interaction with nanoscale photonic structures.
• Detailed characterization of these structures is essential for advancing structural color technology.

Purpose of the Study:

• To perform a multi-scale structural characterization of ceramic-based photonic glasses.
• To establish relationships between the material's structure, processing, and resulting properties (color).
• To identify specific structural features requiring further investigation and refinement for improved performance.

Main Methods:

• Utilized high-resolution ptychographic X-ray computed tomography for detailed structural analysis.
• Employed small-angle X-ray scattering to probe nanoscale structural features.
• Combined these techniques for a comprehensive multi-scale characterization.

Main Results:

• Uncovered critical structure-processing-properties' relationships in nanoparticle-based photonic glasses.
• Identified specific structural features that influence the photonic response and thus the observed color.
• Provided a basis for refining simulation models and guiding experimental improvements.

Conclusions:

• The study highlights the importance of detailed structural characterization for optimizing structural colors.
• Findings indicate a need to revise structural features considered in current simulation models.
• Further experimental investigations are recommended to target specific structural improvements for enhanced color performance.