Viscoelastic liquid crystal colloids for the continuous processing of twisted nematic electro-optical cells

M.C.W. Boxtel, van, R.H.C. Janssen, C.W.M. Bastiaansen, D.J. Broer

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    Abstract

    Liquid crystal colloid materials are described based on the liquid crystal (LC) E7 and submicron sized poly(methyl methacrylate-co-divinylbenzene) particles. Application of a thermal treatment to the composite material produces a finely dispersed network of the internally crosslinked polymeric inclusions in the LC-E7. Dynamic rheological measurements on the LC colloids show that the presence of this network imposes pronounced viscoelastic behavior on the material, which may be exploited in the manufacturing of large-area twisted nematic (TN) electro-optical cells via continuous methods as an alternative to the currently available batchwise routes. The electro-optical characteristics of TN cells based on the composite material are approximately comparable to the electro-optical characteristics of a reference cell filled with pure LC E7, which ensures that the largely increased viscoelasticity of the composite does not lead to a degradation of electro-optical properties
    Original languageEnglish
    Pages (from-to)838-842
    JournalJournal of Applied Physics
    Volume89
    Issue number2
    DOIs
    Publication statusPublished - 2001

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    colloids
    liquid crystals
    cells
    composite materials
    viscoelasticity
    polymethyl methacrylate
    manufacturing
    routes
    inclusions
    degradation
    optical properties

    Cite this

    @article{6755cc56fe134057bb824ffac4f6c784,
    title = "Viscoelastic liquid crystal colloids for the continuous processing of twisted nematic electro-optical cells",
    abstract = "Liquid crystal colloid materials are described based on the liquid crystal (LC) E7 and submicron sized poly(methyl methacrylate-co-divinylbenzene) particles. Application of a thermal treatment to the composite material produces a finely dispersed network of the internally crosslinked polymeric inclusions in the LC-E7. Dynamic rheological measurements on the LC colloids show that the presence of this network imposes pronounced viscoelastic behavior on the material, which may be exploited in the manufacturing of large-area twisted nematic (TN) electro-optical cells via continuous methods as an alternative to the currently available batchwise routes. The electro-optical characteristics of TN cells based on the composite material are approximately comparable to the electro-optical characteristics of a reference cell filled with pure LC E7, which ensures that the largely increased viscoelasticity of the composite does not lead to a degradation of electro-optical properties",
    author = "{Boxtel, van}, M.C.W. and R.H.C. Janssen and C.W.M. Bastiaansen and D.J. Broer",
    year = "2001",
    doi = "10.1063/1.1335648",
    language = "English",
    volume = "89",
    pages = "838--842",
    journal = "Journal of Applied Physics",
    issn = "0021-8979",
    publisher = "American Institute of Physics",
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    }

    Viscoelastic liquid crystal colloids for the continuous processing of twisted nematic electro-optical cells. / Boxtel, van, M.C.W.; Janssen, R.H.C.; Bastiaansen, C.W.M.; Broer, D.J.

    In: Journal of Applied Physics, Vol. 89, No. 2, 2001, p. 838-842.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Viscoelastic liquid crystal colloids for the continuous processing of twisted nematic electro-optical cells

    AU - Boxtel, van, M.C.W.

    AU - Janssen, R.H.C.

    AU - Bastiaansen, C.W.M.

    AU - Broer, D.J.

    PY - 2001

    Y1 - 2001

    N2 - Liquid crystal colloid materials are described based on the liquid crystal (LC) E7 and submicron sized poly(methyl methacrylate-co-divinylbenzene) particles. Application of a thermal treatment to the composite material produces a finely dispersed network of the internally crosslinked polymeric inclusions in the LC-E7. Dynamic rheological measurements on the LC colloids show that the presence of this network imposes pronounced viscoelastic behavior on the material, which may be exploited in the manufacturing of large-area twisted nematic (TN) electro-optical cells via continuous methods as an alternative to the currently available batchwise routes. The electro-optical characteristics of TN cells based on the composite material are approximately comparable to the electro-optical characteristics of a reference cell filled with pure LC E7, which ensures that the largely increased viscoelasticity of the composite does not lead to a degradation of electro-optical properties

    AB - Liquid crystal colloid materials are described based on the liquid crystal (LC) E7 and submicron sized poly(methyl methacrylate-co-divinylbenzene) particles. Application of a thermal treatment to the composite material produces a finely dispersed network of the internally crosslinked polymeric inclusions in the LC-E7. Dynamic rheological measurements on the LC colloids show that the presence of this network imposes pronounced viscoelastic behavior on the material, which may be exploited in the manufacturing of large-area twisted nematic (TN) electro-optical cells via continuous methods as an alternative to the currently available batchwise routes. The electro-optical characteristics of TN cells based on the composite material are approximately comparable to the electro-optical characteristics of a reference cell filled with pure LC E7, which ensures that the largely increased viscoelasticity of the composite does not lead to a degradation of electro-optical properties

    U2 - 10.1063/1.1335648

    DO - 10.1063/1.1335648

    M3 - Article

    VL - 89

    SP - 838

    EP - 842

    JO - Journal of Applied Physics

    JF - Journal of Applied Physics

    SN - 0021-8979

    IS - 2

    ER -