Eletrowetting effect in a nanoporous silica

Weiyi LU; Taewan KIM; Aijie HAN; Xi CHEN; Yu QIAO

doi:10.1021/la900661z

Eletrowetting effect in a nanoporous silica

Weiyi LU, Taewan KIM, Aijie HAN, Xi CHEN, Yu QIAO^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

15 Citations (Scopus)

Abstract

In the past, electrowetting was usually analyzed on large solid surfaces. In the current study, the effective solid-liquid interfacial tension in a nanoporous silica, which is measured by the ion transport pressure, is investigated experimentally. The interfacial tension decreases as the applied potential difference increases, while the magnitude of variation is much smaller than its bulk counterpart. The effect of the external electric field is saturated at a relatively low voltage. These unique phenomena can be attributed to the confinement effect of nanopore walls. © 2009 American Chemical Society.

Original language	English
Pages (from-to)	9463-9466
Number of pages	4
Journal	Langmuir
Volume	25
Issue number	16
Early online date	3 Jun 2009
DOIs	https://doi.org/10.1021/la900661z
Publication status	Published - 18 Aug 2009
Externally published	Yes

Bibliographical note

Special thanks are also due to Mr. L. A. Operhall for the help with the design of the experimental setup.

Funding

This study was supported by the National Science Foundation and The Sandia National Laboratory under Grant No. CMMI-0705142, and the William J. von Liebigg Foundation.

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10.1021/la900661z

Cite this

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AU - CHEN, Xi

AU - QIAO, Yu

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AB - In the past, electrowetting was usually analyzed on large solid surfaces. In the current study, the effective solid-liquid interfacial tension in a nanoporous silica, which is measured by the ion transport pressure, is investigated experimentally. The interfacial tension decreases as the applied potential difference increases, while the magnitude of variation is much smaller than its bulk counterpart. The effect of the external electric field is saturated at a relatively low voltage. These unique phenomena can be attributed to the confinement effect of nanopore walls. © 2009 American Chemical Society.

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Eletrowetting effect in a nanoporous silica

Abstract

Bibliographical note

Funding

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