3D phononic-fluidic cavity sensor for resonance measurements of volumetric fluid properties

Additively manufactured 3D phononic crystals have demonstrated wide acoustic band gaps and strong acoustic mode suppression not attainable by corresponding 2D designs. In this work we present the combination of these air-filled 3D structures with an enclosed fluidic cavity resonator in a single prin...

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Bibliographic Details
Published in2016 IEEE SENSORS pp. 1 - 3
Main Authors Lucklum, Frieder, Vellekoop, Michael J.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2016
Subjects
3D phononic crystals
3D printed cavity sensor
Acoustics
additive manufacturing
Cavity resonators
Crystals
fluidic cavity resonator
Lattices
phononic-fluidic system
Photonic band gap
Resonant frequency
Three-dimensional displays
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Summary:Additively manufactured 3D phononic crystals have demonstrated wide acoustic band gaps and strong acoustic mode suppression not attainable by corresponding 2D designs. In this work we present the combination of these air-filled 3D structures with an enclosed fluidic cavity resonator in a single printed sensor element for the first time. This combination drastically improves the sensitivity of the cavity resonance signal. An analytical 1D calculation demonstrates this phononic-fluidic sensor concept and is used to approximate suitable geometric designs, which are subsequently fabricated using microstereolithography printing. Our experimental results show clearly separated resonance frequencies for different liquids introduced into the cavity, with frequency shifts correlating to differences in density and speed of sound.
DOI:10.1109/ICSENS.2016.7808613