三维面心立方结构的固有的高对称性使其只具备非完全光子带隙 ,而非晶结构可降低对称性导致准完全光子带隙的出现 .实验结果表明非晶胶状晶体具有准完全光子带隙 .非晶胶状光子晶体中的光子带隙的禁带宽度与波长均不随光入射到样品池的角度的变化而明显变化 .其禁带宽度比SiO2 小球面心单晶的禁带宽度宽得多 The inherently high symmetry of a three-dimensional face-centered cubic structure allows it to possess only an incomplete photonic bandgap, whereas the amorphous structure reduces the symmetry resulting in the emergence of a quasi-complete photonic band gap.The experimental results show that the amorphous colloidal crystals have quasi-complete photons Bandgap: The bandgap band gap and the wavelength of the photonic bandgap in the amorphous colloidal photonic crystal do not change significantly with the angle of light incident on the sample cell, and the bandgap of the photonic band gap is smaller than that of the SiO2 spherulitic single crystal Much wider