Journal
NANOSCALE
Volume 5, Issue 4, Pages 1345-1352Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2nr32494f
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Funding
- Municipal Education Commission
- Shanghai Education Development Foundation
- Natural Science Foundation of China [61008029, 51102049]
- National High Technology Program [2011AA100706-2]
- National Science Foundation of China [61171010]
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We demonstrate a novel approach to modulating the motion speed of catalytic microtubular engines via laser irradiation/heating with regard to small-scale heat detection. Laser irradiation on the engines leads to a thermal heating effect and thus enhances the engine speed. During a laser on/off period, the motion behaviour of a microengine can be repeatable and reversible, demonstrating a regulation of motion speeds triggered by laser illumination. Also, the engine velocity exhibits a linear dependence on laser power in various fuel concentrations, which implies an application potential as local heat sensors. Our work may hold great promise in applications such as lab on a chip, micro/nano factories, and environmental detection.
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