Actuation Via Surface Chemistry Induced Surface Stress
A method of controlling macroscopic strain of a porous structure includes contacting a porous structure with a modifying agent which chemically adsorbs to a surface of the porous structure and modifies an existing surface stress of the porous structure. A device in one embodiment includes a porous metal structure, which when contacted with a modifying agent which chemically adsorbs to a surface of the porous metal structure, exhibits a volumetric change due to modification of an existing surface stress of the porous metal structure; and a mechanism for detecting the volumetric change. Additional methods and systems are also presented.
BIENER JUERGEN [US]; BIENER MONIKA M [US]; HAMZA ALEX V [US]; BAEUMER MARCUS [DE]; WITTSTOCK ARNE [DE]; WEISSMUELLER JOERG [DE];
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