Preparation and application of invisible print based on patterned photonic crystals.

How to establish a fast, remarkable, and different external stimulus response mechanism between similar "patterns" and "backgrounds" is a key issue in the design and preparation of invisible printed fabric based on photonic crystals. SiO and P(St-MAA) were used to construct photonic crystals, which were used as "patterns" and "backgrounds" to prepare patterned invisible printed fabric. It also reveals the relationship between the size of the structural unit and the reflection wavelength of the photonic crystals and adjusts the structure of the two parts of the photonic crystals by controlling the particle size of the microspheres so that the "pattern" can achieve the effect of "invisible in the air, visible in the water.

Preparation of Acrylic Yarns with Durable Structural Colors Based on Stable Photonic Crystals.

Structural coloration of photonic crystals (PCs) is considered an ecological and environmental way to achieve colorful textiles. However, constructing PCs with obvious structural colors on traditional flexible yarns is still a great challenge. As a secondary structure that forms textiles, compared with fibers and fabrics, the yarns are rougher, hindering the construction of regular PCs.