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Na-form cation-exchange resin particles were filled between a pair of platinum electrodes, across which an alternating current was applied in order to measure the impedance of the cell. It was found that a discontinuous change occurred in the relationship between the impedance and the measurement frequency, when the impedance measurement was carried out under circulation of pure water. Hysteresis...
Non-destructive measurement of a small region on a solid/liquid interface is of great importance in physical chemistry and biochemistry, especially in the research of thin films and cell membranes. Optical methods for surface analysis with high lateral resolution are suitable methods for monitoring them. We now report a new scanning optical microscopic method to which total internal reflection coupled...
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