Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 14, Issue 14, Pages 2472-2478Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201900300
Keywords
3D lithography; autocatalysis; chemical propulsion; nanotechnology; tubular micro; nanomotor
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Funding
- Natural Science Foundation of China [51322201, U1632115]
- Science and Technology Commission of Shanghai Municipality [17JC1401700]
- National Key Technologies R&D Program of China [2015ZX02102-003]
- Changjiang Young Scholars Program of China
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Catalytic tubular micro/nanomachines convert chemical energy from a surrounding aqueous fuel solution into mechanical energy to generate autonomous movements, propelled by the oxygen bubbles decomposed by hydrogen peroxide and expelled from the microtubular cavity. With the development of nanotechnology, micro/nanomotors have attracted more and more interest due to their numerous potential for in vivo and in vitro applications. Here, highly efficient chemical catalytic microtubular motors were fabricated via 3D laser lithography and their motion behavior under the action of driving force in fluids was demonstrated. The frequency of catalytically-generated bubbles ejection was influenced by the geometrical shape of the micro/nanomotor and surrounding chemical fuel environment, resulting in the variation in motion speed. The micro/nanomotors generated with a rocket-like shape displayed a more active motion compared with that of a single tubular micro/nanomotor, providing a wider range of practical micro-/nanoscale applications in the future.
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