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Abstract Printable structural colors, originating from the interaction of light with micro- and nanostructures, have emerged as a promising approach for creating vibrant, durable, and environmentally friendly coloration. The mechanisms of natural structural colors are introduced. Current printing techniques, including nozzle-based and light-based methods, are discussed, along with their respective color generation strategies. These strategies are categorized into three main approaches: nanostructure self-assembly, high-resolution printing, and total reflection interfaces. Additionally, this review addresses the current challenges within the field for each strategy and proposes potential future directions for the development of printable structural colors. Graphical abstract
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Shear‐Induced Assembly of Liquid Colloidal Crystals for Large‐Scale Structural Coloration of Textiles
Abstract Photonic crystals (PCs) constructed from colloidal building blocks have attracted increasing attention because their brilliant structural colors may find broad applications in paints, sensors, displays, and security devices. However, producing high‐quality structural colors on flexible substrates such as textiles in an efficient and scalable manner remains a challenge. Here a robust and ultrafast approach to produce industrial‐scale colloidal PCs by the shear‐induced assembly of liquid colloidal crystals of polystyrene beads pre‐formed spontaneously over a critical volume fraction is demonstrated. The pre‐crystallization of colloidal crystals allows their efficient assembly into large‐scale PCs on flexible fabric substrates under shear force. Further, by programming the wettability of the fabric substrate with hydrophilic–hydrophobic regions, this shear‐based assembly strategy can conveniently generate pre‐designed patterns of complex structural colors. This assembly strategy brings structural coloration to flexible fabrics at a scale suitable for commercial applications; therefore, it holds the potential to revolutionize the coloration technology in the textile industry.
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- Award ID(s):
- 1810485
- PAR ID:
- 10452716
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Advanced Functional Materials
- Volume:
- 31
- Issue:
- 19
- ISSN:
- 1616-301X
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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