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Tytuł:
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Solvation-Driven Electrochemical Actuation.
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Autorzy:
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Boldini A; Department of Mechanical and Aerospace Engineering, New York University Tandon School of Engineering, Brooklyn, New York 11201, USA.
Cha Y; Center for Intelligent and Interactive Robotics, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
Porfiri M; Department of Mechanical and Aerospace Engineering, Department of Biomedical Engineering, and Center for Urban Science and Progress, New York University Tandon School of Engineering, Brooklyn, New York 11201, USA.
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Źródło:
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Physical review letters [Phys Rev Lett] 2021 Jan 29; Vol. 126 (4), pp. 046001.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: New York : American Physical Society
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MeSH Terms:
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Models, Chemical*
Membranes/*chemistry
Cations/chemistry ; Electrochemistry ; Solutions/chemistry
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Substance Nomenclature:
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0 (Cations)
0 (Solutions)
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Entry Date(s):
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Date Created: 20210212 Date Completed: 20210223 Latest Revision: 20210223
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Update Code:
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20240104
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DOI:
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10.1103/PhysRevLett.126.046001
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PMID:
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33576667
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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.
