Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials

E.J. van der Wouden; D. Liang; D.C. Hermes; J.G.E. Gardeniers; A. van den Berg

doi:10.1109/MEMSYS.2006.1627848

Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials

E.J. van der Wouden, D. Liang, D.C. Hermes, J.G.E. Gardeniers, A. van den Berg

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

3 Citations (Scopus)

5 Downloads (Pure)

Abstract

Abstract Electroosmotic flow (EOF) in a microchannel can be controlled electronically by use of an electrode embedded in the wall of the channel. By setting a voltage to the electrode, the zeta-potential at the wall can be changed locally. Thus, the electrode acts as a "gate" for liquid flow, in analogy with a gate in a field-effect transistor. This paper describes the control of EOF by the synchronized switching of the gate potential with the channel axial potential. The advantage of this procedure is that potential gas formation by electrolysis at the electrodes that provide the axial electric field is suppressed, while the direction and magnitude of the EOF can be maintained. The results show that the flow velocity is linearly dependent on the applied gate potential and varies with the phase difference between the applied gate and channel potential. An analysis of the time constants involved in the charging of the insulator, and therewith the switching of the zeta potential, is made in order to predict the maximum operating frequency.

Original language	English
Title of host publication	19th IEEE International Conference on Micro Electro Mechanical Systems
Place of Publication	Piscataway, NJ
Publisher	IEEE
Pages	510-513
Number of pages	4
ISBN (Print)	0-7803-9475-5
DOIs	https://doi.org/10.1109/MEMSYS.2006.1627848
Publication status	Published - 22 Jan 2006
Event	19th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2006 - Istanbul, Turkey Duration: 22 Jan 2006 → 26 Jan 2006 Conference number: 19

Publication series

Name	MEMS - IEEE International Conference on Micro Electro Mechanical Systems
Publisher	IEEE Computer Society
Number	19
Volume	2006
ISSN (Print)	1084-6999

Conference

Conference	19th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2006
Abbreviated title	MEMS
Country/Territory	Turkey
City	Istanbul
Period	22/01/06 → 26/01/06

Keywords

BIOS-Micro/nanofluidics

Access to Document

10.1109/MEMSYS.2006.1627848

Cite this

van der Wouden, E. J., Liang, D., Hermes, D. C., Gardeniers, J. G. E., & van den Berg, A. (2006). Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials. In 19th IEEE International Conference on Micro Electro Mechanical Systems (pp. 510-513). (MEMS - IEEE International Conference on Micro Electro Mechanical Systems; Vol. 2006, No. 19). IEEE. https://doi.org/10.1109/MEMSYS.2006.1627848

@inproceedings{8655f22cd4b74c91898b820d575d9121,

title = "Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials",

abstract = "Abstract Electroosmotic flow (EOF) in a microchannel can be controlled electronically by use of an electrode embedded in the wall of the channel. By setting a voltage to the electrode, the zeta-potential at the wall can be changed locally. Thus, the electrode acts as a {"}gate{"} for liquid flow, in analogy with a gate in a field-effect transistor. This paper describes the control of EOF by the synchronized switching of the gate potential with the channel axial potential. The advantage of this procedure is that potential gas formation by electrolysis at the electrodes that provide the axial electric field is suppressed, while the direction and magnitude of the EOF can be maintained. The results show that the flow velocity is linearly dependent on the applied gate potential and varies with the phase difference between the applied gate and channel potential. An analysis of the time constants involved in the charging of the insulator, and therewith the switching of the zeta potential, is made in order to predict the maximum operating frequency.",

keywords = "BIOS-Micro/nanofluidics",

author = "{van der Wouden}, E.J. and D. Liang and D.C. Hermes and J.G.E. Gardeniers and {van den Berg}, A.",

year = "2006",

month = jan,

day = "22",

doi = "10.1109/MEMSYS.2006.1627848",

language = "English",

isbn = "0-7803-9475-5",

series = "MEMS - IEEE International Conference on Micro Electro Mechanical Systems",

publisher = "IEEE",

number = "19",

pages = "510--513",

booktitle = "19th IEEE International Conference on Micro Electro Mechanical Systems",

address = "United States",

note = "19th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2006, MEMS ; Conference date: 22-01-2006 Through 26-01-2006",

}

van der Wouden, EJ, Liang, D, Hermes, DC, Gardeniers, JGE & van den Berg, A 2006, Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials. in 19th IEEE International Conference on Micro Electro Mechanical Systems. MEMS - IEEE International Conference on Micro Electro Mechanical Systems, no. 19, vol. 2006, IEEE, Piscataway, NJ, pp. 510-513, 19th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2006, Istanbul, Turkey, 22/01/06. https://doi.org/10.1109/MEMSYS.2006.1627848

Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials. / van der Wouden, E.J.; Liang, D.; Hermes, D.C. et al.
19th IEEE International Conference on Micro Electro Mechanical Systems. Piscataway, NJ: IEEE, 2006. p. 510-513 (MEMS - IEEE International Conference on Micro Electro Mechanical Systems; Vol. 2006, No. 19).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials

AU - van der Wouden, E.J.

AU - Liang, D.

AU - Hermes, D.C.

AU - Gardeniers, J.G.E.

AU - van den Berg, A.

N1 - Conference code: 19

PY - 2006/1/22

Y1 - 2006/1/22

N2 - Abstract Electroosmotic flow (EOF) in a microchannel can be controlled electronically by use of an electrode embedded in the wall of the channel. By setting a voltage to the electrode, the zeta-potential at the wall can be changed locally. Thus, the electrode acts as a "gate" for liquid flow, in analogy with a gate in a field-effect transistor. This paper describes the control of EOF by the synchronized switching of the gate potential with the channel axial potential. The advantage of this procedure is that potential gas formation by electrolysis at the electrodes that provide the axial electric field is suppressed, while the direction and magnitude of the EOF can be maintained. The results show that the flow velocity is linearly dependent on the applied gate potential and varies with the phase difference between the applied gate and channel potential. An analysis of the time constants involved in the charging of the insulator, and therewith the switching of the zeta potential, is made in order to predict the maximum operating frequency.

AB - Abstract Electroosmotic flow (EOF) in a microchannel can be controlled electronically by use of an electrode embedded in the wall of the channel. By setting a voltage to the electrode, the zeta-potential at the wall can be changed locally. Thus, the electrode acts as a "gate" for liquid flow, in analogy with a gate in a field-effect transistor. This paper describes the control of EOF by the synchronized switching of the gate potential with the channel axial potential. The advantage of this procedure is that potential gas formation by electrolysis at the electrodes that provide the axial electric field is suppressed, while the direction and magnitude of the EOF can be maintained. The results show that the flow velocity is linearly dependent on the applied gate potential and varies with the phase difference between the applied gate and channel potential. An analysis of the time constants involved in the charging of the insulator, and therewith the switching of the zeta potential, is made in order to predict the maximum operating frequency.

KW - BIOS-Micro/nanofluidics

U2 - 10.1109/MEMSYS.2006.1627848

DO - 10.1109/MEMSYS.2006.1627848

M3 - Conference contribution

SN - 0-7803-9475-5

T3 - MEMS - IEEE International Conference on Micro Electro Mechanical Systems

SP - 510

EP - 513

BT - 19th IEEE International Conference on Micro Electro Mechanical Systems

PB - IEEE

CY - Piscataway, NJ

T2 - 19th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2006

Y2 - 22 January 2006 through 26 January 2006

ER -

van der Wouden EJ, Liang D, Hermes DC, Gardeniers JGE , van den Berg A. Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials. In 19th IEEE International Conference on Micro Electro Mechanical Systems. Piscataway, NJ: IEEE. 2006. p. 510-513. (MEMS - IEEE International Conference on Micro Electro Mechanical Systems; 19). doi: 10.1109/MEMSYS.2006.1627848

Field-effect control of electro-osmotic flow with synchronized ac-switching of channel and gate potentials

Abstract

Publication series

Conference

Keywords

Access to Document

Fingerprint

Cite this