CHOLESTERIC MATERIALS BASED ON POLYMER GELS
FP4 — Training and Mobility of Researchers
- Duration
- 1997-07-01 → 1999-06-30
- EU contribution
- —
- Participants
- 2
- Scheme
- RGI
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Project objective
Liquid crystalline materials can be used to manufacture passive or active optical components. Especially the formation of passive optical components by photopolymerization of nematic liquid crystalline (LC diacrylates, and active optical components by photopolymerization of mixtures of nematic liquid crystals and nematic liquid crystalline (LC) diacrylates, the so called anisotropic gels, has been investigate thoroughly within Philips Research. As an extension of this work, it is worthwhile to investigate whether it is possible to make gels with the aid of cholesteric liquid crystals. These materials reflect a band of visible light. In such a way switchable mirrors can be made. In order to broaden the reflection band of these switchable mirrors, one has to establish a gradient in the molecular helix over the cross-section of the gel-layer. This will be tried with the aid of photodegradation of the chiral components of the gel. Also other photochemical processes such as patternwise photopolymerization and holographic techniques, will be used to make components based on nematic and mainly cholesteric polymers and gels. Training content (objective, benefit and expected impact) Dr. Brehmer will receive training in the synthesis of reactive liquid crystals, photopolymerization, electro-optical experiments and application of optical components made from liquid crystalline materials. Electronic products increasingly include optical and electro-optical systems. The components to be developed by Dr. Brehmer will be of importance for the development of new electronic products within Philips. Links with industry / industrial relevance (22) Philips research has very close contacts with the development departments of the product divisions within the Philips company. During the training there will be an interaction with these development departments I show them the possibilities of these new materials. On the other hand, they will give demands for developments of new materials.
Original text from CORDIS.
Participants
- NEDERLANDSE PHILIPS BEDRIJVEN BV · EINDHOVENCoordinatorNetherlands
- Not availableCity levelGermany
Links
Data: CORDIS, © European Union