Browsing Electronic & Electrical Eng by Subject "Condensed matter physics"
Now showing items 21-27 of 27
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Optical rotatory power of different phases of an antiferroelectric liquid crystal and implications for models of structure
(American Physical Society, 2001)The investigation of the antiferroelectic liquid crystal (AFLC) was presented. The crystal was found to possess different helical smectic phases identified through a texture under cross-polarizers with a homeotropic alignment ... -
Orientational order of a ferroelectric liquid crystal with small layer contraction
(2010)We present spectroscopic and optical studies of a non-layer-shrinkage ferroelectric liquid crystal DSiKN65. The orientational order parameters S, measured with respect to the smectic layer normal using IR spectroscopy on ... -
Raman and Fourier transform infrared study of substitutional carbon incorporation in rapid thermal chemical vapor deposited Si 1-x-yGexCy on (1 0 0) Si
(2010)We report on a detailed study of the dependence of the vibrational modes in rapid thermal chemical vapor deposited Si1?x?yGexCy films on the substitutional carbon concentration. Si1?x?yGexCy films were investigated using ... -
Reversal and pinning of Curie point transformations in thin film piezoelectrics
(2011)The Curie point for a rhombohedral piezoelectric thin film was established by in situ micro-Raman spectroscopy. The hysteresis in phase reversal and specific thermal conditions for disrupting such reversal were determined. -
Rotational bias of an antiferroelectric liquid crystal studied by polarized Fourier transform infrared spectroscopy
(1999)Experimental studies of the absorbance vs polarization angle of the incident ir beam on a cell have been carried out for several absorbance bands in the SmA phase and in electrically induced ferroelectric states F(1) and ... -
Ruserford Back-scattering and Micro-Raman spectroscopy of composite a-C:Pt films grown by magnetron co-sputtering of graphite and Pt targets by photoelectrochemical etching of silicon
(2010)Raman spectra have been measured in the spectral range from 1000 to 1800 cm?1 on samples of amorphous carbon modified with platinum in amounts comparable with that of carbon. Also, Rutherford backscattering spectra have ... -
Sign reversal in the dielectric anisotropy as functions of temperature and frequency in the nematic phase of a bent-core mesogen
(2010)The sign reversal in the dielectricanisotropy(???????) from positive to negative is observed for 4-cyanoresorcinol bisbenzoate system with temperature and frequency in the nematic phase of a bent-core system as the temperature ...