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Tubular phononic crystal sensor platform for (bio)chemical liquid analysis

Subject Area Microsystems
Acoustics
Analytical Chemistry
Synthesis and Properties of Functional Materials
Measurement Systems
Theoretical Condensed Matter Physics
Term from 2018 to 2022
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 406626998
 
Final Report Year 2023

Final Report Abstract

In summary, we have developed the Tubular Bell significantly different to the traditional approach in phononic crystal sensor literature. In this approach, a 2D phononic crystal surrounds the center of a 1D tubular phononic crystal. The Tubular Bell is more effective. The key is the excitation and readout of the radial resonant mode by addressing the acoustic field directly to the central unit cell of a tubular phononic crystal. Furthermore, this approach allows optimization of the coupling of only one piezoelectric transducer with the acoustic field in the liquid-filled pipe resonator. This approach minimizes all the considered loss mechanisms and achieves an extremely high Q-factor. All project results have been published in high-ranked physical or sensor journals. The papers provide more information on the conceptual approach, the theoretical basis, modelling procedures and experimental details.

Publications

 
 

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