Solvation-Driven Electrochemical Actuation

Title
Solvation-Driven Electrochemical Actuation
Authors
차영수Alain BoldiniMaurizio Porfiri
Issue Date
2021-01
Publisher
Physical review letters
Citation
VOL 126, NO 4, 046001
Abstract
We demonstrate a novel principle of contactless actuation for ionic membranes in salt solution based on solvation. Actuation is driven by differential swelling of the sides of the membrane, due to comigrating water in the solvation shells of mobile ions. We validate our theory through a series of experiments, which unravel a strong dependence of membrane deflection on the hydration numbers of mobile ions in the external solution and membrane. Our study suggests a critical role of solvation in the chemoelectromechanics of natural and artificial selectively permeable membranes.
URI
http://pubs.kist.re.kr/handle/201004/72867
ISSN
0031-9007
Appears in Collections:
KIST Publication > Article
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