Electrophoretic mobility measuring apparatus

Details Electrophoretic mobility measuring apparatus Electrophoretic mobility measuring apparatus

2004-02-24

2008-11-11

Olsen, Kaj K (Department: 1795)

Chemistry: electrical and wave energy

Apparatus

Electrophoretic or electro-osmotic apparatus

C204S452000, C356S344000

Reexamination Certificate

active

07449097

ABSTRACT:
The present invention provides an electrophoretic mobility measuring apparatus capable of conducting measurement with high sensitivity with optical attenuation reduced by incidence of light through the electrode face. This apparatus comprises a transparent electrode63forming a part of a cell wall of a cell6capable of confining a sample, and the other electrode62opposite to the transparent electrode63. A voltage is applied across these electrodes62, 63, and light is incident upon the inside of the cell6through the transparent electrode63. The scattering light which scatters from a sample S at a predetermined angle θ with respect to the incident angle, is received through the transparent electrode63. The Doppler displacement is then measured based on the difference in frequency between the incident light and the outgoing light. The direction of the scattering vector which is the vector difference between incident and outgoing vectors, is substantially identical with that of the normal line h of the transparent electrode face.

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Tsutsui; “Interfacial Electrokinetic Phenomena of Polymer and Determination of Electrophoretic Mobility”; High Polymers, vol. 51, pp. 500-503, (2002).

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