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dc.contributor.authorVIJ, JAGDISHen
dc.date.accessioned2010-03-12T15:05:21Z
dc.date.available2010-03-12T15:05:21Z
dc.date.issued2003en
dc.date.submitted2003en
dc.identifier.citationA. A. Sigarev, J. K. Vij, R.A. Lewis, M. Hird and J. W. Goodby, Molecular orientation and the infrared dichroism of a chiral smectic liquid crystal in a homogeneouslyusly aligned cell at different temperatures and bias fields, Physical Review E, 68, 3, 2003, 031707-1 - 031707-13en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/38824
dc.descriptionPUBLISHEDen
dc.description[and] Physical Review E 68, 2003, 059902-1 (E).en
dc.description.abstractThe molecular orientation and the dichroic behavior of the vibrational bands of a homogeneously aligned helical cell containing chiral smectic liquid crystal ~R!-~-!-1-methylheptyl 4- (48-dodecyloxybiphenyl-4-ylcarbonyloxy!-3-fluorobenzoate are studied at various temperatures as a function of the bias field. These temperatures correspond to the various phase states of the sample at zero field. For those bands that exhibit significant dichroism, the field dependencies of the dichroic parameters ~the dichroic ratio and the polarization angle of maximum absorbance! are found to be dependent on temperature, phase state, and helical unwinding. For the SmA* and SmC a * phases, the phenyl band dichroic ratio and the corresponding orientational order parameter are found to be almost independent of the bias field. The temperature dependence of the orientational order for zero field is discussed by taking into account the structures of the phases and the molecular tilt angles. The field dependencies of the phenyl band dichroic parameters for the SmCA* and SmC g * phases yield results about the distribution of directors in the layers of their unit cells and the state of helical unwinding. The azimuthal orientational distribution function of the carbonyl transition moments with respect to the long molecular axis has been determined. It is found that the degrees of the polar and quadrupolar biasing increase with decrease in temperature and the azimuthal biasing angle for the chiral carbonyl group increases significantly with a reduction in temperature.en
dc.format.extent031707-1en
dc.format.extent031707-13en
dc.language.isoenen
dc.relation.ispartofseriesPhysical Review Een
dc.relation.ispartofseries68en
dc.relation.ispartofseries3en
dc.rightsYen
dc.subjectElectronic & Electrical Engineering
dc.titleMolecular orientation and the infrared dichroism of a chiral smectic liquid crystal in a homogeneouslyusly aligned cell at different temperatures and bias fieldsen
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jvijen
dc.identifier.rssinternalid24902en
dc.identifier.rssurihttp://dx.doi.org/10.1103/PhysRevE.68.031707en


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