论文部分内容阅读
用体积浓度为30%的低分散二氧化硅小球悬浮液注入毛细管中自组织生长成胶体晶体.实验测量了这种胶体晶体的透射谱.测量结果显示这种胶体晶体的透射谱的柱对称性.在垂直毛细管轴向的平面内,谱带结构不随光的入射角度变化,测得光谱在径向转360°保持不变.在含毛细管轴的平面内,在与毛细管轴向夹角越小的方向,谱带越紫移;在垂直毛细管轴方向有最红的带隙.测量得的光谱结果表明这种毛细管内的胶体晶体结构是柱对称的,胶体晶体中密排面平行于毛细管的管壁.另外,此柱对称的胶体晶体比低浓度制作的体心胶体晶体稳定.这种轴向对称性的光子带隙特性将带来许多潜在的应用.
Self-organized growth into colloidal crystals was carried out by injecting a 30% dispersion of low-dispersion silica globules into the capillaries, and the transmission spectra of the colloidal crystals were measured experimentally.The measurement results show that the columnar symmetry In the vertical axial plane of the capillary, the band structure does not change with the angle of incidence of the light and the spectrum is measured at a radial rotation of 360. In the plane containing the capillaries, The direction of the more violet shift of the band and the red bandgap in the direction perpendicular to the axis of the capillary The measured spectral results show that the colloidal crystal structure in this capillary is columnar symmetric and the dense row faces in colloidal crystals are parallel to the capillary In addition, the symmetrical colloidal crystals of this column are more stable than the low concentration of body-centered colloidal crystals.The axial symmetry of photonic bandgap properties will bring many potential applications.