Abstract
Photon correlation spectroscopy (PCS) of scattered laser light is possibly the most widely used technique for sizing submicron particles suspended in liquids.1 Its advantages are that it is reasonably rapid and, being based on measurement of the particles’ natural Brownian motion, non-invasive. A disadvantage of the method, as normally practiced, is its relative insensitivity to polydispersity which precludes the study of narrow particle size distributions (PSD). In this brief report we describe a relatively new method of analysing PCS data to provide significant information about the distribution of slightly polydisperse spherical particles; a more detailed account can be found in Reference 2.
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References
H, G. Barth, Ed., “Modem Methods of Particle Size Analysis”, Wiley-Interscience, New York (1984).
P. N. Pusey and W. van Megen, Detection of small polydispersities by photon correlation spectroscopy, J. Chem. Phys. 80: 3513 (1984).
P. N. Pusey, D. E. Koppel, D. W. Schaefer, R. D. Camerini-Otero and S. H. Koenig, Intensity fluctuation spectroscopy of laser light scattered by solutions of spherical viruses: R17, QB, BSV, PM2 and T7. I, Light-scattering technique, Biochemistry 13: 952 (1974); D. E. Koppel, Analysis of macromolecular polydispersity in intensity correlation spectroscopy: The method of cumulants, J. Chem. Phys. 57: 4814 (1972).
W. van Megen, R. H. Ottewill, S. M. Owens and P. N. Pusey, Measurement of the wavevector dependent diffusion coefficient in concentrated particle dispersions, J. Chem. Phys. 82: 508 (1985).
P. N. Pusey and W. van Megen, Phase behaviour of concentrated suspensions of nearly hard colloidal spheres, Nature 320: 340 (1986).
P. Calvert, A spongy way to new ceramics, Nature 317: 201 (1985).
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© 1988 Springer Science+Business Media New York
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Pusey, P.N., van Megen, W. (1988). Measurement of Small Polydispersities by Photon Correlation Spectroscopy. In: Gouesbet, G., Gréhan, G. (eds) Optical Particle Sizing. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-1983-3_19
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DOI: https://doi.org/10.1007/978-1-4757-1983-3_19
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4419-3208-2
Online ISBN: 978-1-4757-1983-3
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