An Ionic Liquid Based Strain Sensor for Large Displacements
作者： Grim Keulemans , Patrick Pelgrims , Marko Bakula , Frederik Ceyssens , Robert Puers
DOI: 10.1016/J.PROENG.2014.11.362
关键词: Analytical chemistry 、 Gauge (firearms) 、 Elongation 、 Materials science 、 Piezoresistive effect 、 Dielectric spectroscopy 、 Silicone 、 Ionic liquid 、 Axial symmetry 、 Microchannel
摘要: Abstract A novel ionic liquid based strain sensor is fabricated for high measurements (up to 10% and higher). tubular silicone microchannel with a diameter of 310 μm length 5 mm filled an (1-Butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide). The final has outer 650 μm 15 mm. When the channel axially loaded, geometrical deformations change electrical properties channel. 4-point impedance spectroscopy integrated circuit AD5933 from Analog Devices dedicated galvanostatic front-end performed characterize this piezoresistive effect. highest sensitivity observed in frequency range 10 25 kHz, corresponding gauge factors between 2 2.5 elongation 10%.
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