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Title: A polymer microdevice for tensiometry of insoluble components
Authors: Gijsenbergh, Pieter ×
Pepicelli, Martina
Wirth, Chris
Vermant, Jan
Puers, Bob #
Issue Date: 31-Dec-2014
Host Document: Procedia Engineering vol:87 pages:80-83
Conference: Eurosensors 2014 edition:28 location:Brescia, Italy date:7-10 September 2014
Abstract: A semi-flexible SU-8 polymer microdevice was designed to deflect in response to a change in surface tension at an air-water interface. The suspended microtensiometer encloses a clean water-air interface, while externally the device is surrounded by an interface containing an insoluble component. The difference in surface tension between the inside and outside of the device, called the surface pressure, causes the device to deflect. Finite element simulations were performed to predict device behavior prior to fabrication. Finished devices were tested in a Langmuir trough during multiple compression and expansion cycles, using a platinum Wilhelmy plate for an independent surface pressure measurement. A resolution of 0.16 mN/m was achieved.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:ESAT - MICAS, Microelectronics and Sensors
Soft Matter, Rheology and Technology Section
× corresponding author
# (joint) last author

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