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US 11,692,279 B2Granted
Copper nanowire grown shape-memory-alloy, artificial muscle including the same, and manufacturing method thereof
AssigneeKorea Advanced Institute of Science and Technology
InventorsIl-Kwon Oh, Saewoong Oh
Life of this patent
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Abstract
An exemplary embodiment relates to improving a driving speed of a shape-memory-alloy applied as an artificial muscle, and to improving heat conduction and thermal convection by growing copper nanowires on the surface of the shape-memory-alloy to improve a natural cooling rate and a driving speed of the shape-memory-alloy.
Claims17
A method of manufacturing a shape-memory-alloy, comprising:
- removing an oxide film on a surface of the shape-memory-alloy;
- electrodepositing copper on the surface of the shape-memory-alloy from which the oxide film is removed;
- growing a copper hydroxide nanowire on the surface of the copper electrodeposited shape-memory-alloy;
- oxidizing the copper hydroxide nanowire grown on the surface of the shape-memory-alloy to a copper oxide nanowire;
- and
- reducing the copper oxide nanowire grown on the surface of the shape-memory-alloy to copper nanowire,
- wherein a main material for removing the oxide film on the surface of the shape-memory-alloy includes phosphoric acid (H3PO4), hydrogen peroxide (H2O2), and water.
4 more elements
Dependencies are inferred from the claim text.