TY - JOUR
T1 - New measurement method of complex electrophoretic mobility of charged colloids by quasi-elastic light scattering
AU - Mizuno, Daisuke
AU - Kimura, Yasuyuki
AU - Hayakawa, Reinosuke
PY - 2000/11/15
Y1 - 2000/11/15
N2 - A new measurement method of complex electrophoretic mobility μ* of colloidal particles in suspension was developed using a heterodyne technique of quasi-elastic light scattering under a sinusoidal electric field. The influence of diffusion was removed by squaring the time-domain signal of scattered light and we succeeded in accurate and highly sensitive measurement of μ* in a wide frequency range for the first time. The frequency dependence of μ* of latex particles was measured up to 50 kHz by this method. The relaxation of mobility due to anomalous double-layer polarization was observed above 1 kHz in the obtained spectrum.
AB - A new measurement method of complex electrophoretic mobility μ* of colloidal particles in suspension was developed using a heterodyne technique of quasi-elastic light scattering under a sinusoidal electric field. The influence of diffusion was removed by squaring the time-domain signal of scattered light and we succeeded in accurate and highly sensitive measurement of μ* in a wide frequency range for the first time. The frequency dependence of μ* of latex particles was measured up to 50 kHz by this method. The relaxation of mobility due to anomalous double-layer polarization was observed above 1 kHz in the obtained spectrum.
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U2 - 10.1143/jjap.39.l1197
DO - 10.1143/jjap.39.l1197
M3 - Article
AN - SCOPUS:0034314844
VL - 39
SP - L1197-L1199
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 11 B
ER -