Electrically Switchable Gratings Formed Using Ultrafast Holographic Two-Photon-Induced Photopolymerization
| Autor: | Lalgudi V. Natarajan, Timothy J. Bunning, Vincent P. Tondiglia, David Tomlin, S. M. Kirkpatrick |
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| Rok vydání: | 2000 |
| Předmět: |
chemistry.chemical_classification
Diffraction Materials science Holographic grating business.industry General Chemical Engineering Holography Physics::Optics General Chemistry Polymer law.invention Condensed Matter::Soft Condensed Matter Photopolymer Optics chemistry law Liquid crystal Electric field Materials Chemistry business Ultrashort pulse |
| Zdroj: | Chemistry of Materials. 12:2842-2844 |
| ISSN: | 1520-5002 0897-4756 |
| Popis: | Periodic gratings were formed using ultrafast holography to initiate two-photon-induced photopolymerization of a reactive monomer mixed with liquid crystal. The resulting structure shown in the cross-sectional SEM micrograph (scale bar = 3 μm) consists of periodic lamellae of polymer-dispersed liquid crystals and dense polymer. This periodic structure generates a refractive index modulation that gave rise to diffraction of light. The far-field diffraction intensity pattern can be modulated by applying an electric field across the holographic grating. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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