Cross-Linked Liquid Crystalline Systems: From Rigid Polymer by Dirk Broer, Gregory P Crawford, Slobodan Zumer
By Dirk Broer, Gregory P Crawford, Slobodan Zumer
Liquid crystal monitors have been came upon within the Sixties, and this day we proceed to benefit from the advantages of that basic discovery and its translation right into a big range of goods. Like liquid crystals, polymers are strange fabrics, and feature equally loved loads of learn recognition as a result of their big purposes and makes use of and intricate basic homes. the mix of liquid crystal and polymer homes produces a wide array of latest effects―spanning from densely crosslinked, inflexible polymer networks to weakly crosslinked elastomers―that should not easily manifestations of both local liquid crystals or polymers on my own.
Cross-Linked Liquid Crystalline Systems brings jointly liquid crystal and polymer structures and their adaptations. the sector, very like conventional liquid crystals, is certainly one of an interdisciplinary nature with a vast spectrum, from the very basic questions of nature to a myriad of functional makes use of. There seems no scarcity of surprising homes and far-reaching functions in densely crossed-linked liquid crystal platforms and liquid crystal elastomers. those platforms offer a wealthy new road for either basic and utilized study and proceed to fascinate scientists and engineers. in particular, this ebook covers:
- Cross-linked networks made from reactive mesogen materials
- Manipulation of liquid crystalline by way of exterior constraints
- Advances in lcd display technology
- Physical and electromagnetic houses of elastomers and magnetic gels
- Computer simulations and thought of liquid crystal polymeric networks and elastomers
- Side-on nematic liquid-crystalline elastomers for man made muscle applications
Liquid crystal demonstrate know-how has pushed a lot of the elemental learn in crosslinked liquid crystalline platforms. The structures’ skill to implement third-dimensional constitution within the molecular order and trap it created a few compelling program chances since it supplied invaluable keep an eye on of the molecular order. This ebook advances the knowledge of simple technological know-how at the back of those structures, hurries up a number of the proposed functions to undefined, and hopes to encourage generations of scientists to imagine generally approximately those fascinating and precious fabrics.
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Extra resources for Cross-Linked Liquid Crystalline Systems: From Rigid Polymer Networks to Elastomers (Liquid Crystals Book Series)
Funct. , 13(9), 732. 47. M. 2003. Technologies towards patterned optical foils, SID Symposium Digest Tech Papers, 78, (Baltimore, USA, meeting 20–22 May 2003). 48. , Roosendaal, S. , Hoog, A. , et al. 2005, Technologies towards patterned optical foils applied in transflective LCd’s, J. Soc. Inf. Display, 13(8), 627. 49. A. 2006. Patterned retarders prepared by photoisomerization and photopolymerization of liquid crystalline films, Liquid Crystals, 33(6), 723–737. 50. , and Lub, J. 1999. , J. Appl.
The aligned reactive mesogen containing the photoisomerizable compound is UV exposed in the presence of oxygen (a) forming isotropic areas alternated with still aligned mesogens (dashed) (b). Both the isotropic monomer and the aligned monomer are polymerized by a single exposure step in nitrogen yielding a patterned retarder (c). The polarization microscopy pictures shows the patterns with the alignment under 45◦ (e, f) and parallel (g, h) with the crossed polarizers. The bright areas are birefringent; the black areas are isotropic.
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