Research on a fabrication method for bulk colloidal photonic crystals and their utilization of three dimensional crystalline anisotropy

我们成功地开发了一种利用剪切诱导法制备高取向块状胶体光子晶体的方法。通过改变粒子浓度和粒子半径，可以制备出具有不同晶格常数的晶体。所获得的材料是稳定的固体，其中三维周期性粒子阵列固定在塑料聚合物基体中，并被切割成所需的形状。此外，根据剪切过程的条件，发现材料中表现出意想不到的光学特性。

We have succeeded to develop a method for producing highly oriented bulk colloidal photonic crystals by means of shear-induced process. Crystals with different lattice constants are also produced by changing particle concentration and particle radius. Obtained materials are stable solid where three-dimensional periodic particle arrays are immobilized in a plastic polymer matrix, and are cut in desired shapes. In addition, depending on the condition of the shearing process, unexpected optical characteristics are found to be manifested in the materials.