Title :
Semi-numeric boundary element method for piezoelectric fluid sensors using a fourier spectral approach
Author :
Voglhuber-Brunnmaier, Thomas ; Beigelbeck, Roman ; Jakoby, Bernhard
Author_Institution :
Center for Integrated Sensor Syst., Danube Univ. Krems, Wiener Neustadt, Austria
Abstract :
A semi-numeric boundary element-based method for fluidic piezoelectric disc sensors excited by lateral and transversal electric fields is presented. Besides AT-cut quartz, the method is also applied to alternative materials like lithium niobate, lithium tantalate and langatate which show much stronger coupling factors for lateral field excitation. Additionally to viscosity and density, the electrical conductivity and permittivity and the thickness of the fluid layer are considered. Their significant influence on the type of excited mode is discussed.
Keywords :
Fourier analysis; boundary-elements methods; density measurement; electrical conductivity; fluidic devices; gallium compounds; lanthanum; lithium compounds; permittivity; piezoelectric devices; quartz; viscosity measurement; AT-cut quartz; Fourier spectral approach; La3Ga5.5Ta0.5O14; LiNbO3; LiTaO3; SiO2; coupling factors; density; electrical conductivity; fluid layer thickness; fluidic piezoelectric disc sensors; langatate; lateral electric fields; lithium niobate; lithium tantalate; permittivity; seminumeric boundary element-based method; transversal electric fields; viscosity; Capacitance; Electrodes; Liquids; Lithium compounds; Permittivity; Sensors;
Conference_Titel :
SENSORS, 2014 IEEE
Conference_Location :
Valencia
DOI :
10.1109/ICSENS.2014.6985068
