Your browser doesn't support javascript.
loading
Controlling the Optical Properties of Transparent Auxetic Liquid Crystal Elastomers.
Cooper, Emily J; Reynolds, Matthew; Raistrick, Thomas; Berrow, Stuart R; Jull, Ethan I L; Reshetnyak, Victor; Mistry, Devesh; Gleeson, Helen F.
Afiliación
  • Cooper EJ; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
  • Reynolds M; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
  • Raistrick T; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
  • Berrow SR; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
  • Jull EIL; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
  • Reshetnyak V; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
  • Mistry D; Taras Shevchenko National University of Kyiv, Kyiv 03680, Ukraine.
  • Gleeson HF; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
Macromolecules ; 57(5): 2030-2038, 2024 Mar 12.
Article en En | MEDLINE | ID: mdl-38495386
ABSTRACT
Determining the tunability of the optical coefficients, order parameter, and transition temperatures in optically transparent auxetic liquid crystal elastomers (LCEs) is vital for applications, including impact-resistant glass laminates. Here, we report measurements of the refractive indices, order parameters, and transition temperatures in a family of acrylate-based LCEs in which the mesogenic content varies from ∼50 to ∼85%. Modifications in the precursor mixture allow the order parameter, ⟨P2⟩, of the LCE to be adjusted from 0.46 to 0.73. The extraordinary refractive index changes most significantly with composition, from ∼1.66 to ∼1.69, in moving from a low to high mesogenic content. We demonstrate that all LCE refractive indices decrease with increasing temperature, with temperature coefficients of ∼10-4 K-1, comparable to optical plastics. In these LCEs, the average refractive index and the refractive index anisotropy are tunable via both chemical composition and order parameter control; we report design rules for both.
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Macromolecules Año: 2024 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Macromolecules Año: 2024 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos