Study of micromechanism for dynamic light scattering in colloid

Tuo Zhu; Yixin Zhang; Haijin Sun

doi:10.1117/12.130469

28 October 1992 Study of micromechanism for dynamic light scattering in colloid

Tuo Zhu, Yixin Zhang, Haijin Sun

Proceedings Volume 1726, 1992 Shanghai International Symposium on Quantum Optics; (1992) https://doi.org/10.1117/12.130469
Event: 1992 Shanghai International Symposium on Quantum Optics, 1992, Shanghai, China

Abstract

In the study of dynamic light scattering (DLS), the autocorrelation function of the scattered light is one of the most important problems. Through the relationship between autocorrelation function and autocorrelation function of scattered light intensity, using the technology of photon correlation spectroscopy (PCS), we can measure the physical and the chemical properties of the illuminating system. In the illuminated system, the Brownian movement of the scattering particle is a result of dynamic light scattering. In this paper, calculations are presented of the autocorrelation of scattered field by a monodispersion system of spherical particle in colloid following statistical properties of Brownian movement and theory of classical electromagnetic field. The approximation of results which we get was the same single exponential functions in general use, and the results applied to the situation for the Brownian particles in an electric field. The spectral density difference between the two situations is discussed and it is suggested that this result may be employed in the experiments of the quantitative analysis of mixtures of charged macromolecules in colloid.

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Tuo Zhu, Yixin Zhang, and Haijin Sun "Study of micromechanism for dynamic light scattering in colloid", Proc. SPIE 1726, 1992 Shanghai International Symposium on Quantum Optics, (28 October 1992); https://doi.org/10.1117/12.130469

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KEYWORDS

Particles

Dynamic light scattering

Light scattering

Scattering

Electromagnetic scattering

Macromolecules

Quantum optics

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