期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 134, 期 51, 页码 20593-20596出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja310365k
关键词
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资金
- Core Research for Evolutional Science and Technology (CREST) program of the Japan Science and Technology Agency (JST)
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [22245025]
- Grants-in-Aid for Scientific Research [22245025] Funding Source: KAKEN
Graphite has been known as a typical diamagnetic material and can be levitated in the strong magnetic field. Here we show that the magnetically levitating pyrolytic graphite can be moved in the arbitrary place by simple photoirradiation. It is notable that the optical motion control system described in this paper requires only NdFeB permanent magnets and light source. The optical movement is driven by photothermally induced changes in the magnetic susceptibility of the graphite. Moreover, we demonstrate that light energy can be converted into rotational kinetic energy by means of the photothermal property. We find that the levitating graphite disk rotates at over 200 rpm under the sunlight, making it possible to develop a new class of light energy conversion system.
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