Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel

W. L.W. Hau; L. M. Lee; Y. K. Lee; Man Wong; Y. Zohar

doi:10.1109/SENSOR.2003.1215557

Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel

W. L.W. Hau, L. M. Lee, Y. K. Lee, Man Wong, Y. Zohar^*

^*Corresponding author for this work

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

10 Citations (Scopus)

Abstract

Electrokinetic generation of micro-flow patterns has advanced in recent years and received significant attention due to promising applications in biotechnology. Basic flow fields like bi-directional shear and out-of-plane vortices have been generated electrokinetically in microchannel liquid flow using various surface-charge patterns. In-plane vortex flows present a higher challenge since positive and negative charge regions on the same surface are required. Utilizing a newly-developed polymer-coating technology, the fabrication and characterization of microchannel devices with a variety of charge patterns are reported. Pairs of in-plane counter-rotating vortices or serpentine-like vortical motion have been observed depending on the absence or presence of a mean flow. The experimental results have been found to be consistent with CFD computations using a commercial code.

Original language	English
Title of host publication	TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	651-654
Number of pages	4
ISBN (Electronic)	0780377311, 9780780377318
DOIs	https://doi.org/10.1109/SENSOR.2003.1215557
Publication status	Published - 2003
Event	12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers - Boston, United States Duration: 8 Jun 2003 → 12 Jun 2003

Publication series

Name	TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers
Volume	1

Conference

Conference	12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers
Country/Territory	United States
City	Boston
Period	8/06/03 → 12/06/03

Bibliographical note

Publisher Copyright:
© 2003 IEEE.

Keywords

Etching
Fabrication
Fluid flow
Glass
Mechanical engineering
Microchannel
Polymer films
Silicon compounds
Solids
Surface treatment

Access to Document

10.1109/SENSOR.2003.1215557

Cite this

Hau, W. L. W., Lee, L. M., Lee, Y. K., Wong, M., & Zohar, Y. (2003). Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel. In TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers (pp. 651-654). Article 1215557 (TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers; Vol. 1). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SENSOR.2003.1215557

Hau, W. L.W. ; Lee, L. M. ; Lee, Y. K. et al. / Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel. TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc., 2003. pp. 651-654 (TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers).

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title = "Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel",

abstract = "Electrokinetic generation of micro-flow patterns has advanced in recent years and received significant attention due to promising applications in biotechnology. Basic flow fields like bi-directional shear and out-of-plane vortices have been generated electrokinetically in microchannel liquid flow using various surface-charge patterns. In-plane vortex flows present a higher challenge since positive and negative charge regions on the same surface are required. Utilizing a newly-developed polymer-coating technology, the fabrication and characterization of microchannel devices with a variety of charge patterns are reported. Pairs of in-plane counter-rotating vortices or serpentine-like vortical motion have been observed depending on the absence or presence of a mean flow. The experimental results have been found to be consistent with CFD computations using a commercial code.",

keywords = "Etching, Fabrication, Fluid flow, Glass, Mechanical engineering, Microchannel, Polymer films, Silicon compounds, Solids, Surface treatment",

author = "Hau, \{W. L.W.\} and Lee, \{L. M.\} and Lee, \{Y. K.\} and Man Wong and Y. Zohar",

note = "Publisher Copyright: {\textcopyright} 2003 IEEE.; 12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers ; Conference date: 08-06-2003 Through 12-06-2003",

year = "2003",

doi = "10.1109/SENSOR.2003.1215557",

language = "English",

series = "TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers",

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Hau, WLW, Lee, LM, Lee, YK, Wong, M & Zohar, Y 2003, Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel. in TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers., 1215557, TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers, vol. 1, Institute of Electrical and Electronics Engineers Inc., pp. 651-654, 12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers, Boston, United States, 8/06/03. https://doi.org/10.1109/SENSOR.2003.1215557

Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel. / Hau, W. L.W.; Lee, L. M.; Lee, Y. K. et al.
TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc., 2003. p. 651-654 1215557 (TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers; Vol. 1).

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

TY - GEN

T1 - Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel

AU - Hau, W. L.W.

AU - Lee, L. M.

AU - Lee, Y. K.

AU - Wong, Man

AU - Zohar, Y.

PY - 2003

Y1 - 2003

N2 - Electrokinetic generation of micro-flow patterns has advanced in recent years and received significant attention due to promising applications in biotechnology. Basic flow fields like bi-directional shear and out-of-plane vortices have been generated electrokinetically in microchannel liquid flow using various surface-charge patterns. In-plane vortex flows present a higher challenge since positive and negative charge regions on the same surface are required. Utilizing a newly-developed polymer-coating technology, the fabrication and characterization of microchannel devices with a variety of charge patterns are reported. Pairs of in-plane counter-rotating vortices or serpentine-like vortical motion have been observed depending on the absence or presence of a mean flow. The experimental results have been found to be consistent with CFD computations using a commercial code.

AB - Electrokinetic generation of micro-flow patterns has advanced in recent years and received significant attention due to promising applications in biotechnology. Basic flow fields like bi-directional shear and out-of-plane vortices have been generated electrokinetically in microchannel liquid flow using various surface-charge patterns. In-plane vortex flows present a higher challenge since positive and negative charge regions on the same surface are required. Utilizing a newly-developed polymer-coating technology, the fabrication and characterization of microchannel devices with a variety of charge patterns are reported. Pairs of in-plane counter-rotating vortices or serpentine-like vortical motion have been observed depending on the absence or presence of a mean flow. The experimental results have been found to be consistent with CFD computations using a commercial code.

KW - Etching

KW - Fabrication

KW - Fluid flow

KW - Glass

KW - Mechanical engineering

KW - Microchannel

KW - Polymer films

KW - Silicon compounds

KW - Solids

KW - Surface treatment

UR - https://openalex.org/W1853918807

UR - https://www.scopus.com/pages/publications/84944743302

U2 - 10.1109/SENSOR.2003.1215557

DO - 10.1109/SENSOR.2003.1215557

M3 - Conference Paper published in a book

T3 - TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers

SP - 651

EP - 654

BT - TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers

Y2 - 8 June 2003 through 12 June 2003

ER -

Hau WLW, Lee LM, Lee YK, Wong M, Zohar Y. Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel. In TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc. 2003. p. 651-654. 1215557. (TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers). doi: 10.1109/SENSOR.2003.1215557

Experimental investigation of electrokinetically generated in-plane vorticity in a microchannel

Abstract

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Keywords

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