Fabrication of optical gratings by shrinkage of a rubber material

Teng Kai Shih, Jeng Rong Ho, Hung Yu Liao, Chia Fu Chen, Chueh Yang Liu

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11 Scopus citations


Ordered wavy surface structures generated by deposition of a metal thin film on a pre-stretched PDMS plate were fabricated and its potential application for optical gratings was proposed. The orientation of the generated structures was always perpendicular to the pre-stretched direction and the pitch of the structure could be adjusted ranging from 4.5 μm to 6.8 μm by controlling the strength of the pre-stretched strain and the thickness of the surface metal film. Based on these periodic structures, various optical gratings were demonstrated. With a slight modification of the fabrication scheme, gratings with different orientations can be fabricated on both sides of the PDMS plate, the double-sided gratings, could be fabricated. It is believed the current method has the potential for the fabrication of a large-scale diffractive grating at lower costs.

Original languageEnglish
Pages (from-to)5339-5343
Number of pages5
JournalThin Solid Films
Issue number16
StatePublished - 30 Jun 2008


  • Gratings
  • Metal films
  • PDMS
  • Wavy structures


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