Light scattering spectroscopy depolarized

In a series of papers (24-29) Eicke and co-workers reported results of thorough studies performed on inverse micellar systems involving hydrocarbons such as benzene or isooctane and surfactants such as AY or AOT aerosols. Dielectric, conductance, ultracentrifugation, NMR, light scattering, fluorescence depolarization and photon correlation spectroscopy techniques were used. The main conclusions arrived at are the following ones, as expressed in C29). For water-to-AOT molar ratios smaller than 10, water-in-isooctane systems consist of dispersions of hydrated soap aggre-... 

Figure 9.1 Depolarized structure factor for Uthium molybdenum selenate in dilute propylene carbonate solution. The measured rod length is 2 (im. (From Patterson, G.D., Ramsay, D.J., and Carroll, RJ., Depolarized light scattering spectroscopy and polymer characterization, Analytica Chimica Acta, 189, 57,1986. With permission.)...

Depolarized light scattering spectroscopy was applied by Degiorgio, et al. to solutions of a fiuorinated latex polymer(10). The orientations of pairs of spheres are uncorrelated, so as discussed in Section 10.4 the VH spectrum is determined entirely by the self- part of the dynamic structure factor appropriate analysis of the VH spectrum determines both Ds and the rotational diffusion coefficient Dr. Degiorgio, et al. found that Ds(4>) and Dr(4>) are both accurately described, for... 

Figure 49. Susceptibility spectra for propylene carbonate (Tg — 160 K) as measured by depolarized light scattering (top, data from Ref. 372) and dielectric spectroscopy (bottom, data from Ref. 9), each normalized by a temperature-independent static susceptibility. The full lines are fits from solutions of a two-component schematic MCT model. The dashed fines indicate a white noise spectrum. The dash—dotted line in the upper panel exhibits the asymptote of the critical spectrum. The dotted line shows the solution of the model at T — Tc with hopping terms being neglected. (From Ref. 380.)...

T. Matsuoka, K. Sakai, K. Takagi, Light beating spectroscopy of polarized and depolarized scattering in p-n-hexyl p -cyanobiphenyl, Phys. Rev. Utt. 1993, 71, 1510-1513. 

At first, an overview of the experimental methods which are suitable to characterize the CNT aggregation state in general, and thus are suitable to monitor CNT debundling in aqueous medium and in presence of surfactant, will be reviewed. Three main streams will be presented (i) "direct imaging of the CNT dispersions by m icroscopic techniques (ii] spectroscopic techniques, such as Raman spectroscopy, which exploit the difference in electronic properties between bundled and individualized CNTs and (iii] depolarized dynamic light scattering which is commonly used to characterize colloidal systems. 

To elucidate the nucleation mechanism during the crystallization process from the glassy state, Matsuba et al. [32] performed time-resolved Fourier transform infrared (FTIR) spectroscopy and depolarized light scattering measurements (DPLS) on glassy SPS kept at 120 C. They found an induction... 

Brodin, A. and Rossler, A.E. (2006). Depolarized light scattering versus optical Kerr effect spectroscopy of supercooled liquids Comparative analysis. J. Chem. Phys. 125 114502(1-9). 

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