Observatorio de I+D+i UPM

Descripción
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.
Internacional	Si
JCR del ISI	Si
Título de la revista	Beilstein J Nanotech
ISSN	2190-4286
Factor de impacto JCR	2,67
Información de impacto	Datos JCR del año 2014
Volumen	6
DOI
Número de revista
Desde la página	396
Hasta la página	403
Mes	FEBRERO
Ranking

Esta actividad pertenece a memorias de investigación

• 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)

• Creador: Departamento: Tecnología Fotónica y Bioingeniería