Electrowetting-enhanced microfluidic device for drop generation

H. Gu; F.G.J. Malloggi; Srinivas Vanapalli; V.S.A.R. Vanapalli Veera; Friedrich Gunther Mugele

doi:10.1063/1.3013567

Electrowetting-enhanced microfluidic device for drop generation

H. Gu, F.G.J. Malloggi, Srinivas Vanapalli, V.S.A.R. Vanapalli Veera, Friedrich Gunther Mugele

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

We integrated electrowetting into a microfluidic flow focusing device to study drop generation under the influence of electric fields. Using both the dispersed phase inlet pressure and the applied voltage as control parameters, we find that the range of drop sizes and the drop generation rate can be controlled in a much finer way than with hydrodynamics alone. In particular a “conical spray” regime occurring at a voltage of O(50 V) allows for continuous tuning of the (highly monodisperse) drop diameter from ≈ 5 to 50 μm at a fixed continuous flow rate.

Original language	Undefined
Pages (from-to)	183507-
Journal	Applied physics letters
Volume	93
Issue number	18
DOIs	https://doi.org/10.1063/1.3013567
Publication status	Published - 2008

Keywords

IR-73458
METIS-250610

Access to Document

10.1063/1.3013567

Cite this

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title = "Electrowetting-enhanced microfluidic device for drop generation",

abstract = "We integrated electrowetting into a microfluidic flow focusing device to study drop generation under the influence of electric fields. Using both the dispersed phase inlet pressure and the applied voltage as control parameters, we find that the range of drop sizes and the drop generation rate can be controlled in a much finer way than with hydrodynamics alone. In particular a “conical spray” regime occurring at a voltage of O(50 V) allows for continuous tuning of the (highly monodisperse) drop diameter from ≈ 5 to 50 μm at a fixed continuous flow rate.",

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AU - Gu, H.

AU - Malloggi, F.G.J.

AU - Vanapalli, Srinivas

AU - Vanapalli Veera, V.S.A.R.

AU - Mugele, Friedrich Gunther

PY - 2008

Y1 - 2008

N2 - We integrated electrowetting into a microfluidic flow focusing device to study drop generation under the influence of electric fields. Using both the dispersed phase inlet pressure and the applied voltage as control parameters, we find that the range of drop sizes and the drop generation rate can be controlled in a much finer way than with hydrodynamics alone. In particular a “conical spray” regime occurring at a voltage of O(50 V) allows for continuous tuning of the (highly monodisperse) drop diameter from ≈ 5 to 50 μm at a fixed continuous flow rate.

AB - We integrated electrowetting into a microfluidic flow focusing device to study drop generation under the influence of electric fields. Using both the dispersed phase inlet pressure and the applied voltage as control parameters, we find that the range of drop sizes and the drop generation rate can be controlled in a much finer way than with hydrodynamics alone. In particular a “conical spray” regime occurring at a voltage of O(50 V) allows for continuous tuning of the (highly monodisperse) drop diameter from ≈ 5 to 50 μm at a fixed continuous flow rate.

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KW - METIS-250610

U2 - 10.1063/1.3013567

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