Numerical and Experimental Study of a Phononic-Fluidic Sensor Using a Cubic Unit Cell with Spherical Void

Yauheni Belahurau, Jacob Søndergaard Jensen, Frieder Lucklum

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This paper presents a design study of a phononic-fluidic cavity sensor to measure volumetric properties of different liquids. A 3D finite element model shows that the sensor performance drastically depends on the lattice constant of a phononic crystal unit cell. As a result, the numerical model predicts the quality factor up to 200. As proof of concept, we fabricated several sensors using microstereolithography printing, and performed their experimental characterization. We achieved a good match of resonance frequency in the numerical model and experiments. Our experimental results displays a quality factor up to 55, and clearly separated resonance frequencies for different liquids in the cavity, with frequency shifts corresponding to differences in density and speed of sound.
Original languageEnglish
Title of host publicationProceedings of 2021 IEEE Sensors
Number of pages4
Publication date2021
ISBN (Print)978-1-7281-9502-5
Publication statusPublished - 2021
Event2021 IEEE Sensors - Virtual Conference, Sydney, Australia
Duration: 31 Oct 20214 Nov 2021


Conference2021 IEEE Sensors
LocationVirtual Conference
Internet address
SeriesProceedings of IEEE Sensors


  • 3D phononic crystals
  • 3D printed phononicfluidic cavity sensor
  • Finite element method
  • Additive manufacturing


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