电活性材料驱动的柔性光子晶体结构 色调控技术研究进展

In terms of the small range and insufficient flexibility of flexible photonic crystal structural color change, the structural color control method of flexible photonic crystals is reviewed. The mechanism, carrier materials and main methods of structural color control arc introduced. The deformation velocity, response time, actuating voltage, energy consumption and maximum strain of dielectric, ionic and thermal electroactive materials are summarized and compared. The research progress in electrochromic technology at home and abroad is summarized and analyzed, and the main performance parameters such as color change range, Young's modulus and driving voltage of various representative electrochromic technologies arc compared. It is found that it is difficult for traditional electrochromic technology to balance among good flexibility, low actuating voltage and a large color change range. On the basis of a comprehensive review, this paper focuses on the development status of flexible photonic crystal structural color control technology actuated via electroactive materials, and clarifies the unique advantages of this structural color control method, such as good flexibility, easy packaging, and multiple response patterns. Finally, this paper summarizes that the flexible photonic crystal structural color control technology actuated via electroactive materials is the most promising technology in the field of electrochromism, and also points out the problems faced by as well as the future developing trend of this technology.