Macromolecular investigations by laser light scattering

Author

Chopra, S.

Author_Institution

Dept. of Phys., Indian Inst. of Technol., New Delhi, India

fYear

1995

fDate

15-18 Feb 1995

Firstpage

31503

Lastpage

31868

Abstract

In a liquid suspension the small particles dance around randomly executing Brownian motion. When laser light is focussed onto such a solution, the total light scattered consists of a superposition of the light scattered from the individual particles in the scattering volume. Interference effects between the light scattered from different particles executing Brownian motion will cause this total intensity to fluctuate rapidly in time (~μ sec time scale) about a well defined average value. Analysis of the time scale of these intensity fluctuations yields the information of interest

Keywords

Brownian motion; biodiffusion; biological techniques; fluctuations; laser velocimetry; light interference; light scattering; macromolecules; molecular biophysics; organic compounds; suspensions; Brownian motion; intensity fluctuations; interference effects; laser light scattering; liquid suspension; macromolecular investigations; scattering volume; small particles; time scale; total scattered light; Fluctuations; Frequency; Hydrodynamics; Information analysis; Laser theory; Light scattering; Microorganisms; Particle scattering; Photodetectors; Photoelectricity;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995 and 14th Conference of the Biomedical Engineering Society of India. An International Meeting, Proceedings of the First Regional Conference., IEEE

Conference_Location

New Delhi

Print_ISBN

0-7803-2711-X

Type

conf

DOI

10.1109/RCEMBS.1995.533041

Filename

533041