Transient electric light scattering

Stoylov, Stoyl P.; Sokerov, S.

doi:10.1016/0021-9797(67)90226-3

Cited by 23 publications

(5 citation statements)

References 16 publications

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“…However, since the light scattering from the elongated particles is a function of the particle size parameter, the index of refraction of the particle and the orientation of the particles with respect to the incident light beam, the inference of the precise size distribution from the electric light scattering data is not warranted at this time. Stoylov et al (1967) measured three values of the slope from the curve of ln(A I,/A I,) versus time for cylindrically shaped tobacco mosaic virus (TMV) particles in liquid. Those three values corresponded to minimum, mean and maximum of T. The mean relaxation time was related to the average length of the particles.…”

Section: Rotational Diffusion Constant and Inverted Datamentioning

confidence: 99%

“…In thermal equilibrium, they possess a random orientation distribution. The earlier works have demonstrated that the alignment of elongated particles can be achieved by a hydrodynamic flow (Sorrentino and Mason, 1972), a magnetic field (Timbrell, 1975) and an electric field (Stoylov and Sokerov, 1967). These works were all carried out in a liquid media.…”

Section: Introductionmentioning

confidence: 99%

“…These works were all carried out in a liquid media. Stoylov and Sokerov (1967) measured the rotational diffusion constants of the rodlike particles based on the relaxation behavior of the aligned particles. The method, used by these authors, hereafter to be referred to as *To whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Characterization of Chain-Aggregate Aerosol by Electrooptic Scattering

Cheng

Xie

Yang

et al. 1991

Aerosol Science and Technology

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A technique combining the electric field-induced alignment and the transient light scattering was applied to characterize Fe20, chain-aggregate aerosols. Particles were exposed to a pulsed square electric field with strengths up to 2.5 kV/cm. Rotational diffusion constants of the particles were obtained from the decay rate of the relative change in light scattering intensity due to orientation of particles after the removal of

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Section: Rotational Diffusion Constant and Inverted Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental Characterization of Chain-Aggregate Aerosol by Electrooptic Scattering

Cheng

Xie

Yang

et al. 1991

Aerosol Science and Technology

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“…Here C is the capacitance and V is the applied voltage. It should be noted that the saturation effects observed in other studies at field strengths of several hunlreds V/cm [2,10,Ll. ] were obtained for a longer duration of the electric pulse.…”

Section: Introductionmentioning

confidence: 77%

“…Pulsed light-scattering exper1ments have been reported for several clay ndnerals suspended in dilute electrolyte solutions [2,10]. In the present note we report on a study of changes in scattered light of sodium-montroorillonite suspended in sodium chloride, am sodium chloride-sodium phosphate solutions, resulting from the application of very short am strong electrical fields.…”

Section: Introductionmentioning

confidence: 83%

Light Scattering of Montmorillonite in NaCl and Na‐Phosphate Solutions Subjected to Pulsed Electric Fields

Lahav

Raziel

Pecht

1971

Israel Journal of Chemistry

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Changes in scattered light of fresh and aged sodium montmorillonite, suspended in sodium chloride and phosphate solutions after application of very short and strong electrical fields, was studied. Montmorillonite suspensions behave like polydispersed systems. Results of phosphate treated montmorillonite were compared with phosphate‐free montmorillonite, in which a flocculation process took place. The range of particle size for the phosphate treated montmorillonite was calculated.

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Electro‐optic decay analysis for polydisperse systems

Schweitzer

Jennings

1972

Biopolymers

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synopsisThe decay curves of electro-optic transients are generally used to measure the rotary diffusion constants (D) of colloidal particles in suspension or biopolymers in solution. Analysis usually is made by plotting the logarithm of the decay as a function of time, t.Curvature in such plots shows the presence of several values of D and hence a distribution of particle sizes. I n this case, analysis of the complete curve to yield the distribution is severely restricted by lack of precision in the experimental data. The most reliable and reproducible part of the decay curve is the initial (t = 0) slope. This paper develops theory for the initial slope for dilute suspensions of long thin cylinders with various electricd properties. It is shown that the initial slope depends not only on the particlesize distribution and electric field strength, but also on the nature of the electrical properties of the molecules. Furthermore, for an identical polydisperse system, transient electric birefringence, electric optical rotation, and electric dichroism on the the one hand, and transient electric light scattering on the other, yield different initial slopes and hence apparently different values for D. These important conclusions have not been appreciated in previous studies and indicate the need for caution when comparing data from different experimental methods. Illustrative calculations are presented for a polydisperse system of long thin cylinders having a normal distribution in lengths, but of uniform diameter. Some preliminary measurements support the theory.

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Transient electric light scattering

Cited by 23 publications

References 16 publications

Experimental Characterization of Chain-Aggregate Aerosol by Electrooptic Scattering

Experimental Characterization of Chain-Aggregate Aerosol by Electrooptic Scattering

Light Scattering of Montmorillonite in NaCl and Na‐Phosphate Solutions Subjected to Pulsed Electric Fields

Electro‐optic decay analysis for polydisperse systems

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