Electrical response of liquid crystal cells doped with multi-walled carbon nanotubes

García García, Amanda and Vergaz, Ricardo and Algorri Genaro, José Francisco and Quintana Arregui, Patxi Xabier and Otón Sánchez, José Manuel (2015). Electrical response of liquid crystal cells doped with multi-walled carbon nanotubes. "Journal of Nanotechnology", v. 6 ; pp. 396-403. ISSN 2190-4286. https://doi.org/10.3762/bjnano.6.39.

Description

Title: Electrical response of liquid crystal cells doped with multi-walled carbon nanotubes
Author/s:
  • García García, Amanda
  • Vergaz, Ricardo
  • Algorri Genaro, José Francisco
  • Quintana Arregui, Patxi Xabier
  • Otón Sánchez, José Manuel
Item Type: Article
Título de Revista/Publicación: Journal of Nanotechnology
Date: February 2015
Volume: 6
Subjects:
Freetext Keywords: Carbon nanotubes; Cole–Cole diagrams; impedance; liquid crystal; PEDOT:PSS
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Tecnología Fotónica y Bioingeniería
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The inclusion of nanoparticles modifies a number of fundamental properties of many materials. Doping of nanoparticles in self-organized materials such as liquid crystals may be of interest for the reciprocal interaction between the matrix and the nanoparticles. Elongated nanoparticles and nanotubes can be aligned and reoriented by the liquid crystal, inducing noticeable changes in their optical and electrical properties. In this work, cells of liquid crystal doped with high aspect ratio multi-walled carbon nanotubes have been prepared, and their characteristic impedance has been studied at different frequencies and excitation voltages. The results demonstrate alterations in the anisotropic conductivity of the samples with the applied electric field, which can be followed by monitoring the impedance evolution with the excitation voltage. Results are consistent with a possible electric contact between the coated substrates of the LC cell caused by the reorientation of the nanotubes. The reversibility of the doped system upon removal of the electric field is quite low

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2013-47342-C2UnspecifiedUnspecifiedUna nueva generación de dispositivos fotonicos basada en materiales autoorganizados: caracterización
Madrid Regional GovernmentS2013/ MIT-2790SINFOTONUnspecifiedSensores e INstrumentación en tecnologías FOTÓNicas.

More information

Item ID: 41122
DC Identifier: http://oa.upm.es/41122/
OAI Identifier: oai:oa.upm.es:41122
DOI: 10.3762/bjnano.6.39
Official URL: http://www.beilstein-journals.org/bjnano/single/articleFullText.htm?publicId=2190-4286-6-39
Deposited by: Memoria Investigacion
Deposited on: 03 Jul 2016 09:05
Last Modified: 06 Jun 2019 14:58
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