Projects per year
Acoustoﬂuidics is the interdisciplinary combined ﬁeld of ultrasound acoustics and microﬂuidics. The interplay between acoustic standing pressure- and velocity waves and the laminar channel ﬂows in microchips enable reproducible and controllable manipulation of the position of suspended cells and particles as small as on the nanometer-scale. Acoustoﬂuidics is an emerging ﬁeld and the bulk of the theoretical foundation experimentalists rely on when designing new devices is based on idealized systems and approximated twodimensional numerical models. These create a good understanding of systems and can explain most experimentally observed phenomena. As the acoustoﬂuidic community grows the channel designs grow in amount and complexity. Hence, a move away from idealized and approximated systems towards more complete, threedimensional numerical models may be necessary. That is the topic of this thesis. In this thesis we document the gradual development of a numerical model intended to accurately model complex acoustoﬂuidic microdevices. The model grows from a simpel two-dimensional model containing few elements to a three-dimensional model capable of modeling microdevices to scale. Along the development we verify the model predictions using analytical and experimental results. Additionally, we use it to draw out knowledge about the rapidly oscillating acoustic ﬁelds that are not readily measured experimentally, thus gaining insight in the physical phenomena happening in the devices. Finally, we use the predictive powers of the model as a design tool to improve on existing microdevices and even creating an entirely new one.
|Place of Publication||Lyngby, Denmark|
|Publisher||Technical University of Denmark|
|Number of pages||151|
|Publication status||Published - 2019|
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- 1 Finished
15/06/2016 → 30/09/2019