Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Electrical response of liquid crystal cells doped with multi-walled carbon nanotubes
Year:2015
Research Areas
  • Nanotechnology,
  • Spectroscopy,
  • Coal by products industry
Information
Abstract
The inclusion of nanoparticles modifies a number of fundamental properties of many materials. Doping of nanoparticles in selforganized 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.
International
Si
JCR
Si
Title
Beilstein J Nanotech
ISBN
2190-4286
Impact factor JCR
2,67
Impact info
Datos JCR del año 2014
Volume
6
Journal number
From page
396
To page
403
Month
FEBRERO
Ranking
Participants
  • Autor: Amanda García García (UPM)
  • Autor: Ricardo Vergaz Benito (Universidad Carlos III de Madrid)
  • Autor: José Francisco Algorri Genaro (Universidad Carlos III de Madrid)
  • Autor: Patxi Xabier Quintana Arregui (UPM)
  • Autor: Jose Manuel Oton Sanchez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Tecnología Fotónica y Bioingeniería
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)