Interfacial destabilization and atomization driven by surface acoustic waves
By A. Qi, Leslie Y. Yeo, James R. Friend. 2008
284 citations recorded by the source corpus.
Surface acoustic wave atomization is a rapid means for generating micron and submicron aerosol droplets. Little, however, is understood about the mechanisms by which these droplets form due to the complex hydrodynamic processes that occur across widely varying length and time scales. Through experiments, scaling theory, and simple numerical modeling, we elucidate the interfacial destabilization mechanisms that lead to droplet formation. Using a millimeter-order fluid drop exposed to surface acoustic waves as it sits atop a single-crystal lithium niobate piezoelectric substrate, large aerosol droplets on the length scale of the parent drop dimension are ejected through a whipping and pinch-off phenomenon, which occurs at the asymmetrically formed crest of the drop due to leakage of acoustic radiation at the Rayleigh angle. Smaller micron order droplets, on the other hand, are formed due to the axisymmetric breakup of cylindrical liquid jets that are ejected as a consequence of interfacial destabilization. ...
Subfields: Biomedical Engineering, Computational Mechanics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/7af9ccc6677dac1eeea505780a10a29d5da4cd7e
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In Biomedical Engineering
In Computational Mechanics
In Electrical and Electronic Engineering
Citations in the corpus
- Surface Acoustic Wave Microfluidics (2014, background): “…for optimum inhalation therapy, but also allows the possibility of generating submicrometer droplet dimensions given the dependence of the interfacial instability wavelength and hence the ejected droplet size on the aspect ratio of the parent liquid source (Collins et al. 2012, Qi et al. 2008).”
- A Review on Aerosol-Based Direct-Write and Its Applications for Microelectronics (2012, background): “[26] describe a surface acoustic wave (SAW) atomizer capable of producing micron-sized droplets similar to what is required for directwrite applications.”
- Microscale acoustofluidics: Microfluidics driven via acoustics and ultrasonics (2011, unknown): “…SAW Kurosawa et al. (1995); Kurosawa et al. (1997); Chono et al. (2004); Kim et al. (2005); Alvarez, Yeo, and Friend (2008), Friend et al. (2008); Qi et al. (2008); Alvarez et al. (2009); Heron et al. (2010); Qi et al. (2010); Ho et al. (2011) Mixing Thickness Kaajakari et al. (2001); Yaralioglu…”