Abstract
By establishing and exploring a numeric model of an acoustofluidic device driven by a piezoelectric plate transducer, we discovered simple and distinct vibrational patterns with high displacement amplitudes for a lateral vibrational mode of the transducer plate. With the design based on a numerically optimized chip-geometry for this particular lateral mode, we fabricated high-performant chips enabling rapid and accurate particle focusing, where the acoustic energy density is exceeding 100 J/m3 at actuation frequencies around 540 kHz, while heat generation remains low. We excite higher order harmonics leading to multiple separate lines of particles along the channel. With the custom-made chip holder featuring integrated fluid connections and transducer support, we are moreover able to swiftly mount microfluidic chips directly after dicing without any further preparation.
Original language | English |
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Title of host publication | Utilizing Lateral Plate Transducer Modes for High Quality Acoustofluidics in Silicon-Based Chips |
Pages | 1 |
Number of pages | 4 |
DOIs | |
Publication status | Published - 2022 |
Keywords
- Acoustofluidics
- Microfluidic
- Harmonic analysis
- Transducers