© 1999 American Association of Physics Teachers. Analyze a DLS correlation function using a cumulants approach to estimate particle.Tong, “ Velocity difference measurement with a fiber-optic coupler,” J. Chu, Laser Light Scattering (Academic, New York, 1991), 2nd ed., Chap. Brettin (University of Colorado, Colorado, 1965), pp. Mehta, “Coherence and statistics of radiation,” in Lectures in Theoretical Physics, Vol. Benedek, “ A study of Brownian motion using light scattering,” Am. Jackson, Classical Electrodynamics (Wiley, New York, 1992), 2nd ed. Van de Hulst, Light Scattering by Small Particles (Wiley, New York, 1957). Wiltzius, Dynamic light scattering with a CCD camera,1993 Sample is a solution of 0.215-um diam latex spheres diffusing in glycerol. Sahni, Phase Transitions and Critical Phenomena, edited by C. Levanyuk (North-Holland, New York, 1983), pp. Goldburg, “Light scattering investigations of the critical region in fluids,” in Light Scattering Near Phase Transitions, edited by H. Stanley, Introduction to Phase Transitions and Critical Phenomena (Oxford, New York, 1971). Kellayet al., “ Experiments with Turbulent Soap Films,” Phys. Målo/yet al., “ Spatial coherence of homodyne light scattering from particles in a convective velocity field,” Phys. Tonget al., “ Turbulent transition by photon-correlation spectroscopy,” Phys. Dynamic light scattering (DLS) is widely used to quantify the dynamics of scattering particles by analyzing the autocorrelation function of light scattered from. Edmund Scientific in Barrington, NJ is a good source for interference filters and other optical components. Twiss, “ Correlation between photons in two coherent beams of light,” Nature (London) 177, 27– 29 (1956). Wolf, “ Coherence Properties of Optical Fields,” Rev. Can be used for estimation of ellipticity of the particles. Shape: Ellipsodial particles results in a small fraction depolarized scattered light. 383–409, and other articles in this volume. Applications of DLS Size: Using Stoke-Einstein equation DLS can be used to easy, fast and accurate determination of the hydrodynamic radius of particles. Goldburg, “The dynamics of phase separation near the critical point: spinodal decomposition and nucleation,” in Scattering Techniques Applied to Supramolecular and Nonequilibrium Systems, edited by S.-H. Pecora, Dynamic Light Scattering (Wiley-Interscience, New York, 1976). Einstein, in Investigations on the Theory of Brownian Motion, edited by R. Reif, Fundamentals of Statistical and Thermal Physics (McGraw–Hill, New York, 1965). Kittel, Elementary Statistical Physics (Wiley, New York, 1958). Walker, Fundamentals of Physics (Wiley, New York, 1997), 5th ed., Chap. Static & Dynamic Light Scattering First quantitative experiments in 1869 by Tyndall (scattering of small particles in the air Tyndall effect) 1871 Lord Rayleigh started a quantitative study and theory Basic idea: incident monochromatic linearly polarized light beam incident on a sample. A good source of such particles is PolyScience, 6600 W. For example, older models of Malvern, Langley Ford, and Brookhaven correlators should work fine.
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