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Investigation of Periodic Microstructure Induced by 355 nm UV Polarized Laser on Polyimide Surface |
| LI Mei1;LU Qing-Hua1,2;YIN Jie1;LUO Shou-Yu1,3;WANG Zong-Guang1 |
| 1School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240
2Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200030
3Department of Physics, School of Sciences, Shanghai Jiao Tong University, Shanghai 200240
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| Cite this article: |
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LI Mei, LU Qing-Hua, YIN Jie et al 2002 Chin. Phys. Lett. 19 255-258 |
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Abstract We investigate a periodic microstructure induced by 355 nm ultraviolet polarized laser on polyimide surface and the dependence of the structures on laser parameters. Laser-induced periodic surface structures (LIPSS) of sub-micrometer size were generated on three kinds of polyimide films by a polarized Nd:YAG laser of 355 nm within a wide range of laser fluence. The chemical structure of polyimide, the film-making process, the number of laser pulses and the laser fluence greatly influenced the formation of LIPSS. The periodicity of LIPSS was decided by the wavelength, the incidence angle of the laser beam and the apparent refractive index of the material.
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68.35.Bs
42.62.-b
81.05.Lg
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Published: 01 February 2002
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68.35.Bs
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42.62.-b
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(Laser applications)
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81.05.Lg
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(Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)
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