Slug length monitoring in liquid–liquid Taylor-flow integrated in a novel PVDF micro-channel

A polyvinylidene fluoride (PVDF) micro-sensor channel with integrated gold wires was developed and manufactured by ultrasonic hot embossing and welding. The sensor channel was employed to detect the slug length distribution in a liquid–liquid Taylor-flow by conductivity measurements. The sensor channel was also tested regarding its usability for the detection of blockages by hot wire anemometry.

► Simple method for slug length monitoring in Taylor-flow.
► Cheap and easy manufacturing technology for the sensors.
► Sensors can be custom made from different polymers.
► No expensive or complicated electronics for data acquisition or analysis.
► Different electrical measuring principles can be performed with one sensor.