MEMS tensiometer utilized to measure surface tension

The surface tension of different liquids was successfully measured utilizing a high-precision microprobe which is based on a system developed at TU Ilmenau. It is shown that surface tension can be measured at high repeatability (0.25 mN/m) and at a remarkable absolute accuracy higher than 95 % over a broad range of liquids in comparison to literature values. Due to the very small and compact dimensions of the measurement system, only small sample volumes (<< 10 µl) are required. The measurement is carried out by fully automated measurement system utilizing a positioning system based on a step motor and a microcontroller. For more information read our white paper:

→ S. Bohm and B. Goj: Measurement of the surface tension utilizing high-precision MEMS, June 2018

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