Abstract
Photonic crystals, which are important functional materials, are formed by the periodic arrangement of materials with different dielectric constants that have photonic bandgaps and localization properties. Their preparation methods are primarily physical and chemical. Physical methods include mechanical drilling, layer-by-layer stacking, and precision processing. Chemical methods primarily involve colloidal self-assembly methods. Various colloidal crystal self-assembly methods have been reported, each with its own advantages and disadvantages. Photonic crystals have important applications in many fields, such as optical communications, information technology, energy, biomedicine, and sensors, including high-performance optical fiber fabrication, photonic chip development, and solar cell efficiency enhancement. This paper reviews the latest progress in the preparation of photonic crystals using physical and self-assembly methods. Currently, the preparation and application of photonic crystals have made significant achievements; however, there are still challenges in terms of preparation accuracy, efficiency, cost, and application integration technology. With the future development of science and technology, breakthroughs are expected in novel structural development, preparation process optimization, and cross-field integration, which will continue to promote the progress of photonic crystals and social development.
Published Version
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