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Turbulence and Stochastic Processes in Nematic Liquid Crystals

dc.contributor.authorCarbone, Francesco
dc.contributor.authorStrangi, Giuseppe
dc.contributor.authorVersace, Carlo
dc.date.accessioned2015-07-07T17:24:26Z
dc.date.available2015-07-07T17:24:26Z
dc.date.issued2010-10-22
dc.identifier.urihttp://hdl.handle.net/10955/757
dc.identifier.urihttps://doi.org/10.13126/unical.it/dottorati/757
dc.descriptionDottorato di Ricerca in “Scienze e Tecnologie delle Mesofasi e dei Materiali Molecolari, Ciclo XXIII, a.a. 2010en_US
dc.description.abstractIn this work we studied the electrohydrodynamics instabilities (EHD) from a different point of view. We used the traditional tools, belonging to the traditional fluid turbulence framework, to the world of liquid crystals. This tools in addition, for the first time, a 3D scanning of the NLC sample driven in these turbulent regimes, give us some interesting results. As an example a fragmentation of the large scale structures (Williams Domains) whit characteristics similar to the Richardson cascade. We also studied, for the first time, the intensity fluctuation at different depth z inside the sample, and we found a strong non gaussianity in the probability density function of this fluctuation. Further information has been obtained by by studying the decorrelation processes in EHD. We found a local transition between two different regimes: the classical Kolomokorov K41 law in the y direction, and a random sweeping decorrelation in the opposite x direction. Finally we study the weak localization of light obtained during the EHD. We found a drastic reduction in the scattering mean free path `? and a strong enhancement of the backscattering cone.en_US
dc.description.sponsorshipUniversità degli Studi della Calabria, Dottorato di Ricerca in “Scienze e Tecnologie delle Mesofasi e dei Materiali Molecolari, Ciclo XXIII SSD FIS/01a.a. 2010en_US
dc.language.isoenen_US
dc.relation.ispartofseriesFIS/01;
dc.subjectChimica fisicaen_US
dc.subjectElettrodinamicaen_US
dc.subjectCampi magneticien_US
dc.subjectProcessien_US
dc.subjectCristalli liquidien_US
dc.subjectFluidodinamicaen_US
dc.titleTurbulence and Stochastic Processes in Nematic Liquid Crystalsen_US
dc.typeThesisen_US


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