Tow-Dimensional Micro-grating Formed by Polystyrene Spheres

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2003,（8）
• 页码范围: 1290-1292
• 页数: 3页
• 语种: 英文

摘要

We report a simple method to make two-dimensional plane gratings that can be used as splitters. In the selfassembly process, the colloidal spheres can form single layer square or triangular lattice on a flat surface and in our experiments the triangular lattice is a more common structure. As an incident beam passes through the triangular lattice, it can be split into seven sub-beams, among which six beams have the same density and scattering angle. This grating is not sensitive to the polarization direction of the incident light.