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Manufacturing Method of Photonic Crystal

Ames Laboratory

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Technology Marketing Summary
Iowa State University and Ames Laboratory researchers have developed a method of manufacturing 3D photonic band gap crystals with superior properties.  Such a crystal manipulates light within a particular range of wavelengths which could be applied to a number of optical devices including but not limited to waveguides, solar cells, thermophotovoltaics, and telecommunication applications.

Polymeric molds of the layer-by-layer photonic crystal can be economically synthesized with a microtransfer molding technique. The refractive indices of these molds are imorived when conformally coated with higher-index materials to allow formation of a photonic bandgap.  The conformal coating of the molds has been demonstrated with a titania-coated polyurethane molds.  These conformational coatings improve the optical contrast in low-refractive-index photonic crystals such as submirometer-scale structures generated by micro transfer molds.


• Improves performance of photonic crystals

• Allows for use of thinner molds and higher index coatings




Applications and Industries

Photonics, microtransfer molding, polymeric materials

More Information

ISURF Direct Link:

Publication(s): Photonic bandgaps of conformally coated structures J. Opt. Soc. Am. B/Vol. 22, No. 12/December 2005

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To: Jay Bjerke<>