聚苯乙烯光子晶体的制备及其在传感中的应用

以基于毛细作用的垂直沉积法将单分散的二氧化硅胶体微球自组装成光子晶体．在二氧化硅光子晶体的多孔结构里填充聚苯乙烯甲苯溶液，经甲苯挥发，通过氢氟酸处理去除二氧化硅模板，制备出精美的聚苯乙烯光子晶体．研究表明：保留了模板有序多孔结构的聚苯乙烯能被用来作为敏感膜，这使得其在基于折射率变化的传感应用中具有潜在的价值．

Fabrication of Polystyrene and Its Sensing Application to a Photonic Structure

A self-assembly technique which relies on capillary forces to organize mono-dispersive silica colloidal spheres was used to fabricate colloidal silica photonic crystals by reliance on a vertical deposition technique. Elaborate photonic crystals were constructed from polystyrene, which can be dissolved in toluene, by templating the solution-cast materials in porous silica photonic structures. After the removal of the template by hydrofluoric acid dissolution, the polymer castings replicated the photonic features and the nanostructure of the master. It was demonstrated that polystyrene in a photonic structure can be used as sensing film, which is potentially valuable in a number of sensing applications based on a change in the average refractive index of the layer medium.