Shaoxin Lu and Balaji Panchapakesan 2006 Nanotechnology 17 888 doi:10.1088/0957-4484/17/3/045
Shaoxin Lu and Balaji Panchapakesan
Show affiliationsIn this paper, we report that reversible strain amplitudes that are three times higher than commercial piezoceramics can be achieved in metallic nanowire actuators. By self-assembling nanoparticles of platinum on single-wall carbon nanotube templates, hybrid nanowires of platinum were fabricated with extremely high surface area to volume ratio. These nanowires showed reversible strains of 0.3% by modulating the surface electronic charge density through an applied potential relative to an electrolyte. Three regimes of actuation corresponding to different actuation mechanisms at different charge injection levels were identified. A stress of ~12 MPa was generated, corresponding to the maximum strain of 0.31% at low voltages. These results show the applicability of hybrid metallic nanowire systems for artificial muscle applications.
Issue 3 (14 February 2006)
Received 8 September 2005, in final form 11 December 2005
Published 16 January 2006
Shaoxin Lu and Balaji Panchapakesan 2006 Nanotechnology 17 888
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