Nematic liquid crystal reorientation around multi-walled carbon nanotubes mapped via Raman microscopy
Authors: Rusciano G., Cacace, T., García-García, A., Zito, G, Tkachenko, V., Rusciano, G. , Geday, M.A, Otón, J.M., Marino, A., Sasso, A.
Autors Affiliation: Physics Department E. Pancini, University of Naples Federico II, Via Cinthia Monte S. Angelo, Naples, Italy
Abstract: We have studied the formation of topological defects in liquid crystal (LC) matrices induced by multiwalled carbon nanotubes (MWCNTs) and external electric fields. The defects are ascribable to a distortion of the LC molecular director in proximity of the MWCNT surface. The system is analyzed macroscopically using spectroscopic variable angle ellipsometry. Concurrently, confocal micro-Raman spectroscopy is used to study the system state at the microscale. This allows to acquire a three-dimensional, spatially-resolved map of the topological defect, determining scale length variations and orientation topography of the LC molecules around the MWCNT
Journal/Review: OPTICS EXPRESS
Volume: 24 Pages from: 15954 to: 1596
KeyWords: CNT; LC; DOI: 10.1364/OE.24.015954Citations: 3data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-10-13References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here