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

Doina Mǎnǎilǎ-Maximean, Octavian Danila, Constantin Paul Ganea, Pedro L. Almeida

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 1 V/μm.

Original languageEnglish
Article number159
JournalEuropean Physical Journal Plus
Volume133
Issue number4
DOIs
Publication statusPublished - 1 Jan 2018

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