光子晶体的制备与表征

Fabrication of 3-dimensional(3D) photonic crystals in the visible region is a one of the subjects with the highest practical significance in photonic crystals field. Assembly of analogous artificial opals is one of the feasible methods of preparing these sorts of photonic crystals. In the present work, the preparations of monodisperse submicrometric silica and polystyrene spheres; assembly of silica or polystyrene spheres into analogous artificial opals and preparation of zirconia spheres have been investigated. For the first time, the following works have been done: (1) Preparation factors of monodisperse silica and polystyrene microspheres were optimized by means of statistic pattern recognition and artificial neutral network, respectively; (2) Silica photonic crystals with face-centered cubic (fcc) packing of high order and quasi-full bandgaps were prepared in ethanol media; ⑶Structure of polystyrene photonic crystal was examined and discussed, which belongs to analogous fcc packing of polystyrene spheres; (4) Zirconia spheres with an average diameter less than 2 microns were prepared. The above works lay a foundation for development of photonic crystal devices.

研究人工合成类欧泊（ｏｐａｌ）结构三维光子晶体制备过程中单分散，单尺寸纳米及亚微米级球形颗粒的制备及三维有序化排列和愿位固定化的机制，并进行模型化研究；探索具有良好光子带隙特性的类欧泊结构的三维光子晶体的掺杂方法与掺杂机制。为研制实用化光子晶体器件奠定基础。