期刊
ACS NANO
卷 2, 期 5, 页码 1069-1075出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn800154g
关键词
carbon nanotubes; catalytic nanomotors; high speed; hydrogen peroxide; hydrazine
类别
资金
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [840684] Funding Source: National Science Foundation
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.
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