Dual-Fuel-Driven Bactericidal Micromotor

In this paper, we report fabrication of the bimetallic Janus microsphere, a magnesium microsphere with a silver surface coating, through thermal evaporation technique. Because of the Janus structure, this micromotor can be propelled in two different directions by the surface silver or magnesium ‘eng...

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Bibliographic Details
Published in:Nano-micro letters 2016-04, Vol.8 (2), p.157-164
Main Authors: Ge, Ya, Liu, Mei, Liu, Limei, Sun, Yunyu, Zhang, Hui, Dong, Bin
Format: Article
Language:English
Subjects:
Engineering
killing
Janus
E.coli
Micromotor
Self-propelling
Bacterial
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
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Summary:In this paper, we report fabrication of the bimetallic Janus microsphere, a magnesium microsphere with a silver surface coating, through thermal evaporation technique. Because of the Janus structure, this micromotor can be propelled in two different directions by the surface silver or magnesium ‘engine’ and hydrogen peroxide or water fuel. In addition, due to the bactericidal property of silver, this autonomous micromotor is capable of killing bacteria in solution. As compared to the static one, the micromotor is able to kill the bacteria at a much faster rate(about nine times of that of the static one),demonstrating the superiority of the motion one. We thus believe that the micromotor shown in the current study is potentially attractive for the environmental hygiene applications.
ISSN:2150-5551
2311-6706
2150-5551
DOI:10.1007/s40820-015-0071-3