Electrical Conductivity Measurement using a Microfluidic Chip and Evaluation of Viscosity by Walden's Rule

Abstract

In this study, the electrical conductivity of low-volume samples was measured using a prototype microfluidic chip with electrodes. We were able to show the difference of electrical conductivity in the samples of saline solution (0.9w/v% NaCl solution) with sucrose. The correlation between the electrical conductivity and the viscosity evaluated by the capillary method was shown. This correlation was shown that it is possible to evaluate viscosity based on the Walden's rule with our chip.