Acoustic Tweezing and Patterning of Concentration Fields in Microfluidics

Research output: Contribution to journalJournal article – Annual report year: 2017Researchpeer-review

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Acoustic Tweezing and Patterning of Concentration Fields in Microfluidics. / Karlsen, Jonas Tobias; Bruus, Henrik.

In: Physical Review Applied, Vol. 7, No. 3, 034017 , 2017.

Research output: Contribution to journalJournal article – Annual report year: 2017Researchpeer-review

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@article{c4fb8341869e42d4b807528d48d304c9,
title = "Acoustic Tweezing and Patterning of Concentration Fields in Microfluidics",
abstract = "We demonstrate theoretically that acoustic forces acting on inhomogeneous fluids can be used to pattern and manipulate solute concentration fields into spatiotemporally controllable configurations stabilized against gravity. A theoretical framework describing the dynamics of concentration fields that weakly perturb the fluid density and speed of sound is presented and applied to study manipulation of concentration fields in rectangular-channel acoustic eigenmodes and in Bessel-function acoustic vortices. In the first example, methods to obtain horizontal and vertical multilayer stratification of the concentration field at the end of a flow-through channel are presented. In the second example, we demonstrate acoustic tweezing and spatiotemporal manipulation of a local high-concentration region in a lower-concentration medium, thereby extending the realm of acoustic tweezing to include concentration fields.",
author = "Karlsen, {Jonas Tobias} and Henrik Bruus",
year = "2017",
doi = "10.1103/PhysRevApplied.7.034017",
language = "English",
volume = "7",
journal = "Physical Review Applied",
issn = "2331-7019",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Acoustic Tweezing and Patterning of Concentration Fields in Microfluidics

AU - Karlsen, Jonas Tobias

AU - Bruus, Henrik

PY - 2017

Y1 - 2017

N2 - We demonstrate theoretically that acoustic forces acting on inhomogeneous fluids can be used to pattern and manipulate solute concentration fields into spatiotemporally controllable configurations stabilized against gravity. A theoretical framework describing the dynamics of concentration fields that weakly perturb the fluid density and speed of sound is presented and applied to study manipulation of concentration fields in rectangular-channel acoustic eigenmodes and in Bessel-function acoustic vortices. In the first example, methods to obtain horizontal and vertical multilayer stratification of the concentration field at the end of a flow-through channel are presented. In the second example, we demonstrate acoustic tweezing and spatiotemporal manipulation of a local high-concentration region in a lower-concentration medium, thereby extending the realm of acoustic tweezing to include concentration fields.

AB - We demonstrate theoretically that acoustic forces acting on inhomogeneous fluids can be used to pattern and manipulate solute concentration fields into spatiotemporally controllable configurations stabilized against gravity. A theoretical framework describing the dynamics of concentration fields that weakly perturb the fluid density and speed of sound is presented and applied to study manipulation of concentration fields in rectangular-channel acoustic eigenmodes and in Bessel-function acoustic vortices. In the first example, methods to obtain horizontal and vertical multilayer stratification of the concentration field at the end of a flow-through channel are presented. In the second example, we demonstrate acoustic tweezing and spatiotemporal manipulation of a local high-concentration region in a lower-concentration medium, thereby extending the realm of acoustic tweezing to include concentration fields.

U2 - 10.1103/PhysRevApplied.7.034017

DO - 10.1103/PhysRevApplied.7.034017

M3 - Journal article

VL - 7

JO - Physical Review Applied

JF - Physical Review Applied

SN - 2331-7019

IS - 3

M1 - 034017

ER -