FIELD: measuring technology; microfluidics.
SUBSTANCE: invention can be used in various industries. A device for measuring the dynamic wetting angle in a channel, containing personal computer 1, control unit 2, video camera 3, pump 5 that provides liquid movement, sealed reservoir 6, microfluidic chip 7, drain reservoir 8 for accumulating the volume of liquid passed through the channel, mirror 9 mounted on piezoelectric actuators 4, channel 10. Mirror 9 with three piezoelectric actuators 4 is made as a single module, and mirror 9 is moved by piezoelectric actuators 4 by means of a control signal coming from computer 1 to external control unit 2 of actuator 4, based on the algorithms specified by the program to keep the image of the moving phase boundary in the field of fixed view camera 3.
EFFECT: increase in the accuracy of determining the dynamic contact angle in the channel under liquid pressure.
1 cl, 1 dwg
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