Nano Archive

Carbon-nanotuble-induced acceleration of catalytic nanomotors

Laocharoensuk, Rawiwan and Burdick, Jared and Wang, Joseph (2008) Carbon-nanotuble-induced acceleration of catalytic nanomotors. ACS NANO, 2 (5). pp. 1069-1075.

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Synthetic nanoscale motors represent a major step toward the development of practical nanomachines. Despite impressive progress, man-made nanomachines lack the efficiency and speed of their biological counterparts. Here we show that the incorporation of carbon nanotubes (CNT) into the platinum (Pt) component of asymmetric metal nanowire motors leads to dramatically accelerated movement in hydrogen-peroxide solutions, with average speeds (50-60 mu m/s) approaching those of natural biomolecular motors. Further acceleration-to 94 mu m/s, with some motors moving above 200 mu m/s-is observed upon adding hydrazine to the peroxide fuel. Factors influencing the accelerated movement, including the CNT loading and fuel concentration, are examined. Such development of highly efficient and controllable nanomotors offers great promise for self-powered nanoscale transport and delivery systems.

Item Type:Article
Uncontrolled Keywords:carbon nanotubes; catalytic nanomotors; high speed; hydrogen peroxide; hydrazine
Subjects:Physical Science > Nanophysics
Analytical Science > Nanotechnology for sensing and actuating
Physical Science > Nano objects
ID Code:2343
Deposited By:Anuj Seth
Deposited On:18 Dec 2008 11:24
Last Modified:19 Jan 2009 14:46

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