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Filling in the voids of electrospun hydroxypropyl cellulose network: Dielectric investigations

  • Doina Manaila Maximean
  • Octavian Danila
  • Constantin Paul Ganea
  • Pedro L. Almeida
Regular Article
  • 29 Downloads

Abstract.

Here we describe an organic electro-optic device, obtained using electrospun hydroxypropyl cellulose (HPC) polymer fibres and nematic liquid crystals (LC). Its working mechanism is similar to that of a classic polymer-dispersed liquid crystal (PDLC) device. The scanning electron microscopy of the HPC deposited fibres shows a mat of fibres with diameters in the nano and micron size range. Dielectric spectroscopy measurements allow the determination of the dependence of the dielectric constant and electric energy loss on frequency and temperature as well as the determination of the activation energy. The electro-optic study shows a very good optical transmission curve, with an “on”-“off” switching voltage of less than 1V/μ m.

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Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Doina Manaila Maximean
    • 1
  • Octavian Danila
    • 1
  • Constantin Paul Ganea
    • 2
  • Pedro L. Almeida
    • 3
    • 4
  1. 1.University Politehnica of BucharestDepartment of PhysicsBucharestRomania
  2. 2.National Institute of Materials PhysicsMagureleRomania
  3. 3.I3N - CENIMAT, Departamento de Ciência dos MateriaisFaculdade de Ciências e Tecnologia, FCT/UNLCaparicaPortugal
  4. 4.Área Departamental de Física, ISELInstituto Superior de Engenharia de Lisboa, I.P.L.LisboaPortugal

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