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dc.contributor.authorKumar, Jitendra-
dc.contributor.authorManjuladevi, V.-
dc.contributor.authorGupta, Raj Kumar-
dc.contributor.authorKumar, Sandeep-
dc.identifier.citationLiquid Crystals, 2016, Vol.43, p 488-496en_US
dc.identifier.issn1366-5855 (Online)-
dc.descriptionRestricted Access.en_US
dc.description.abstractThe optical response time of a nematic liquid crystal (NLC) decreases due to incorporation of carbon nanotubes (CNTs) in the liquid-crystal host. Such reduction is believed to be due to an increase in the elastic constant of the nanotube-doped LC system. In this paper, we present the effect on optical response due to doping an NLC with octadecylamine functionalised single-walled carbon nanotubes (ODA-SWCNT) in a twisted alignment mode. The electro-optic switching amplitude of ODA-SWCNT nanocomposites of NLC decreases compared to pure NLC. A fast response time is observed with an increase in the concentration of ODA-SWCNT in NLC host. Additionally, optical response of pure NLC in a twisted nematic (TN) cell fabricated using mixtures of polyimide (PI) and ODA-SWCNT as an alignment layer is investigated. The optical response time decreased by ~75% in a TN cell fabricated with a mixture of PI and ODA-SWCNT compared to that of a TN cell prepared using a pure PI alignment layer. The presence of ODA-SWCNT in the alignment layer enhances the surface anchoring of the NLC molecules leading to an increase in the elastic constant and a decrease in the optical response time of NLC.en_US
dc.publisherTaylor & Francisen_US
dc.rights2015 Taylor & Francisen_US
dc.titleFast response in TN liquid-crystal cells: effect of functionalised carbon nanotubesen_US
Appears in Collections:Research Papers (SCM)

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