Nanofluidic bubble pump using surface tension directed gas injection

Niels Roelof Tas; Johan W. Berenschot; Theodorus S.J. Lammerink; Michael Curt Elwenspoek; Albert van den Berg

doi:10.1021/ac011117o

Nanofluidic bubble pump using surface tension directed gas injection

Niels Roelof Tas, Johan W. Berenschot, Theodorus S.J. Lammerink, Michael Curt Elwenspoek, Albert van den Berg

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

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Abstract

A new concept for liquid manipulation has been developed and implemented in surface-micromachined fluid channels. It is based on the surface tension directed injection of a gas into the liquid flow through micrometer-sized holes in the microchannel wall. The injected gas is directed to an exhaust by a cross-sectional asymmetry of the microchannel and thereby moves minute liquid volumes. Successful pumping experiments were performed with single stroke volumes of tens of picoliters at frequencies around 1 Hz. The minimum actuation pressure is 0.6 bar for a 2-μm channel height, in accordance with theoretical predictions.

Original language	Undefined
Pages (from-to)	2224-2227
Number of pages	4
Journal	Analytical chemistry
Volume	74
Issue number	9
DOIs	https://doi.org/10.1021/ac011117o
Publication status	Published - 1 May 2002

Keywords

METIS-206301
IR-43291
EWI-12706

Access to Document

10.1021/ac011117o

http://eprints.eemcs.utwente.nl/secure2/12706/01/AC_74_2224.pdf

Cite this

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title = "Nanofluidic bubble pump using surface tension directed gas injection",

abstract = "A new concept for liquid manipulation has been developed and implemented in surface-micromachined fluid channels. It is based on the surface tension directed injection of a gas into the liquid flow through micrometer-sized holes in the microchannel wall. The injected gas is directed to an exhaust by a cross-sectional asymmetry of the microchannel and thereby moves minute liquid volumes. Successful pumping experiments were performed with single stroke volumes of tens of picoliters at frequencies around 1 Hz. The minimum actuation pressure is 0.6 bar for a 2-μm channel height, in accordance with theoretical predictions.",

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T1 - Nanofluidic bubble pump using surface tension directed gas injection

AU - Tas, Niels Roelof

AU - Berenschot, Johan W.

AU - Lammerink, Theodorus S.J.

AU - Elwenspoek, Michael Curt

AU - van den Berg, Albert

PY - 2002/5/1

Y1 - 2002/5/1

N2 - A new concept for liquid manipulation has been developed and implemented in surface-micromachined fluid channels. It is based on the surface tension directed injection of a gas into the liquid flow through micrometer-sized holes in the microchannel wall. The injected gas is directed to an exhaust by a cross-sectional asymmetry of the microchannel and thereby moves minute liquid volumes. Successful pumping experiments were performed with single stroke volumes of tens of picoliters at frequencies around 1 Hz. The minimum actuation pressure is 0.6 bar for a 2-μm channel height, in accordance with theoretical predictions.

AB - A new concept for liquid manipulation has been developed and implemented in surface-micromachined fluid channels. It is based on the surface tension directed injection of a gas into the liquid flow through micrometer-sized holes in the microchannel wall. The injected gas is directed to an exhaust by a cross-sectional asymmetry of the microchannel and thereby moves minute liquid volumes. Successful pumping experiments were performed with single stroke volumes of tens of picoliters at frequencies around 1 Hz. The minimum actuation pressure is 0.6 bar for a 2-μm channel height, in accordance with theoretical predictions.

KW - METIS-206301

KW - IR-43291

KW - EWI-12706

U2 - 10.1021/ac011117o

DO - 10.1021/ac011117o

M3 - Article

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