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Particle Sizing with PCS Mixed of Self‐beating Mode and Heterodyne Mode
Author(s) -
Benzhuo Lou
Publication year - 2009
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.200700020
Subject(s) - heterodyne (poetry) , sizing , mode (computer interface) , optics , particle (ecology) , dynamic light scattering , scattering , light scattering , heterodyne detection , particle size , mixed mode , materials science , physics , signal (programming language) , chemistry , nanotechnology , acoustics , computer science , nanoparticle , laser , oceanography , organic chemistry , composite material , geology , operating system , programming language
The photon correlation spectroscopy (PCS) spectrum obtained from an actual dynamic light scattering experiment for particle sizing is usually a mixture of self‐beating mode and heterodyne mode. Simulation indicates that a large error can occur when the size of the scattering particles is inverted from such a mixed PCS if pure self‐beating mode or pure heterodyne mode arithmetic is adopted. A method of inverting the particle diameter from such a mixed PCS signal is introduced. The validity of this method is demonstrated by simulation and PCS experiments with standard particles.