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A new low cost concept for the measurement of liquid volume

, , , and . Technical digest / MME 2008, 19th MicroMechanics Europe Workshop, page 307-310. Aachen, Inst. of Materials in Electrical Engineering 1, RWTH Aachen Univ., (2008)

Abstract

This paper presents two cheap methods for measuring the volume of liquid using microchannels in plastic chips. In both methods the liquid moves after injection into the channel according to capillary force. Using a defined cross-section, the liquid volume can be determined by detecting the length of the liquid filled channel. To get an error estimate of this method a first theoretical approach for evaporation influence was made.

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