| 摘要 |
PURPOSE: A microfluidic device for an interface slip speed measurement at a micro channel flow is provided to greatly reduce the measurement time and to enhance the result accuracy since a plurality of channels with a different shear speed for a pressure difference or an electric field value are formed on a chip. CONSTITUTION: A microfluidic device for an interface slip speed measurement at a micro channel flow comprises a micro-fluidic chip(100), an electric field generator(104) and a pump. In order to measure the slip speed at the solution interface and the channel wall appearing at the flow of the solution of the inside of a channel, the micro-fluidic chip is designed through which the solution flows. The electric field generator supplies an electroosmotic flow to the micro-fluidic chip. The pump supplies a pressure driving flow to the micro-fluidic chip. The micro-fluidic chip includes a plurality of channels The micro-fluidic chip is designed to be possible to measure the slip speed measurement according to the channel width variation and to selectively realize the solution flow of the inside of the channel by the pressure driving and electroosmosis.
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