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dc.contributor.author
Gerlt, Michael
dc.contributor.author
Paeckel, Adrià
dc.contributor.author
Pavlic, Alen
dc.contributor.author
Rohner, Patrik
dc.contributor.author
Poulikakos, Dimosthenis
dc.contributor.author
Dual, Jürg
dc.date.accessioned
2022-03-08T16:46:14Z
dc.date.available
2022-01-14T10:11:24Z
dc.date.available
2022-02-28T14:25:33Z
dc.date.available
2022-03-01T09:34:46Z
dc.date.available
2022-03-08T16:46:14Z
dc.date.issued
2021-05-26
dc.identifier.other
10.48550/arXiv.2105.11505
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/525652
dc.identifier.doi
10.3929/ethz-b-000525652
dc.description.abstract
Two-dimensional metal particle focusing is an essential task for various fabrication processes. While acoustofluidic devices can manipulate particles in two dimensions, the production of these devices often demands a cleanroom environment. Therefore, acoustically excited glass capillaries present a cheap alternative to labour-intensive cleanroom production. Here, we present 2D metal micro-particle focusing in a round glass capillary using bulk acoustic waves. Excitation of the piezoelectric transducer at specific frequencies leads to mode shapes in the round capillary, concentrating particles towards the capillary centre. We experimentally investigate the particle linewidth for different particle materials and concentrations. We demonstrate the focus of copper particles with 1 μm in diameter down to a line of width 60.8 ± 7.0 μm and height 45.2 ± 9.3 μm, corresponding to a local concentration of 4.5 % v/v, which is 90 times higher than the concentration of the initial solution. Through numerical analysis, we could obtain further insights into the particle manipulation mechanism inside the capillary and predict the particle trajectories. We found that a transition of the acoustic streaming pattern enables us to manipulate particles close to the critical particle radius. Finally, we used our method to eject copper particles through a tapered round capillary with an opening of 25 μm in diameter, which would not be possible without particle focusing. Our novel setup can be utilized for various applications, that otherwise might suffer from abrasion, clogging and limited resolution.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Cornell University
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Acoustic Metal Particle Focusing in a Round Glass Capillary
en_US
dc.type
Working Paper
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
arXiv
ethz.pages.start
2105.11505v2
en_US
ethz.size
18 p.
en_US
ethz.version.edition
v2
en_US
ethz.identifier.arxiv
2105.11505
ethz.publication.place
Ithaca, NY
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02618 - Institut für Mechanische Systeme / Institute of Mechanical Systems::03307 - Dual, Jürg (emeritus) / Dual, Jürg (emeritus)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02618 - Institut für Mechanische Systeme / Institute of Mechanical Systems::03307 - Dual, Jürg (emeritus) / Dual, Jürg (emeritus)
en_US
ethz.date.deposited
2022-01-14T10:11:30Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2022-02-28T14:25:59Z
ethz.rosetta.lastUpdated
2023-02-07T00:20:10Z
ethz.rosetta.versionExported
true
ethz.COinS
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