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Optical and electrical characterization of a gold nanoparticle dispersion in a chiral liquid crystal matrix |
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| Authors: | Melissa Infusino Antonio De Luca Federica Ciuchi Andrei Ionescu Nicola Scaramuzza Giuseppe Strangi |
| Affiliation: | 1. CNR-IPCF Licryl, c/o Department of Physics, University of Calabria, Via Ponte P.Bucci, 87036, Arcavacata di Rende, Italy 2. Department of Physics, University of Bucharest, Blvd. Kogalniceanu 36-46, Bucharest, 050107, Romania 3. Department of Physics, Case Western Reserve University, 10600 Euclide Avenue, Cleveland, OH, USA |
| Abstract: | We report on the effect of gold nanoparticle (Au NP) dispersion in a chiral nematic liquid crystal (LC). Polarized optical microscopy and X-ray diffraction measurements evidence the insurgence of an order change in the LC host. Moreover, a comparative analysis based on dielectric and voltammetric spectroscopies performed on pure LC and on Au NP-doped LC shows that Au NP’s presence besides affecting LC order influences its electric properties: ion conductivity results importantly reduced, and beyond a threshold value of the applied field electrophoresis phenomena are induced. |
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