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Tow-Dimensional Micro-grating Formed by Polystyrene Spheres |
| ZHANG Qi;NI Pei-Gen;MENG Qing-Bo;CHENG Bing-Ying;ZHANG Dao-Zhong |
| Optical Physics Laboratory, Institute of Physics and Center for
Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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ZHANG Qi, NI Pei-Gen, MENG Qing-Bo et al 2003 Chin. Phys. Lett. 20 1290-1292 |
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Abstract We report a simple method to make two-dimensional plane gratings that can be used as splitters. In the self-assembly 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.
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| Keywords:
42.79.Fm
42.79.Dj
42.70.Qs
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Published: 01 August 2003
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