Is an electric field always a promoter of wetting? Electro-dewetting of metals by electrolytes probed by in situ X-ray nanotomography
Abstract
We developed a special electrochemical cell enabling quantitative analysis andin situX-ray nanotomography of metal/electrolyte interfaces subject to corrosion. Using this cell and applying the nodoid model to describe menisci formed on tungsten wires during anodization, the evolution of the electrolyte surface tension, the concentration of reaction products, and the meniscus contact angle were studied. In contrast to the electrowetting effect, where the applied electric field decreases the contact angle of electrolytes, anodization of the tungsten wires increases the contact angle of the meniscus. Hence, an electric field favors dewetting rather than wetting of the newly formed surface. Finally, the discovered effect opens up new opportunities for the control of wetting phenomena and calls for the revision of existing theories of electrowetting.
- Authors:
-
- Clemson Univ., SC (United States). Dept. of Materials Science and Engineering
- Brookhaven National Lab. (BNL), Upton, NY (United States). Photon Sciences Directorate
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1436249
- Report Number(s):
- BNL-203471-2018-JAAM
Journal ID: ISSN 1359-6640; FDISE6
- Grant/Contract Number:
- SC0012704; AC02-98CH10886
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Faraday Discussions
- Additional Journal Information:
- Journal Volume: 199; Journal ID: ISSN 1359-6640
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Nave, Maryana I., Gu, Yu, Karen Chen-Wiegart, Yu-Chen, Wang, Jun, and Kornev, Konstantin G. Is an electric field always a promoter of wetting? Electro-dewetting of metals by electrolytes probed by in situ X-ray nanotomography. United States: N. p., 2017.
Web. doi:10.1039/C6FD00239K.
Nave, Maryana I., Gu, Yu, Karen Chen-Wiegart, Yu-Chen, Wang, Jun, & Kornev, Konstantin G. Is an electric field always a promoter of wetting? Electro-dewetting of metals by electrolytes probed by in situ X-ray nanotomography. United States. https://doi.org/10.1039/C6FD00239K
Nave, Maryana I., Gu, Yu, Karen Chen-Wiegart, Yu-Chen, Wang, Jun, and Kornev, Konstantin G. Thu .
"Is an electric field always a promoter of wetting? Electro-dewetting of metals by electrolytes probed by in situ X-ray nanotomography". United States. https://doi.org/10.1039/C6FD00239K. https://www.osti.gov/servlets/purl/1436249.
@article{osti_1436249,
title = {Is an electric field always a promoter of wetting? Electro-dewetting of metals by electrolytes probed by in situ X-ray nanotomography},
author = {Nave, Maryana I. and Gu, Yu and Karen Chen-Wiegart, Yu-Chen and Wang, Jun and Kornev, Konstantin G.},
abstractNote = {We developed a special electrochemical cell enabling quantitative analysis andin situX-ray nanotomography of metal/electrolyte interfaces subject to corrosion. Using this cell and applying the nodoid model to describe menisci formed on tungsten wires during anodization, the evolution of the electrolyte surface tension, the concentration of reaction products, and the meniscus contact angle were studied. In contrast to the electrowetting effect, where the applied electric field decreases the contact angle of electrolytes, anodization of the tungsten wires increases the contact angle of the meniscus. Hence, an electric field favors dewetting rather than wetting of the newly formed surface. Finally, the discovered effect opens up new opportunities for the control of wetting phenomena and calls for the revision of existing theories of electrowetting.},
doi = {10.1039/C6FD00239K},
journal = {Faraday Discussions},
number = ,
volume = 199,
place = {United States},
year = {Thu Jan 05 00:00:00 EST 2017},
month = {Thu Jan 05 00:00:00 EST 2017}
}
Web of Science
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