期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 114, 期 17, 页码 5462-5467出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp101193u
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资金
- National Science Foundation [CHE-0809058, EPS-0554328]
- West Virginia University Research Corporation
- West Virginia EPSCoR
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0809058] Funding Source: National Science Foundation
Silica microspheres that are half-coated with platinum metal undergo self-propulsion in solutions of H2O2, with the average speed increasing with increasing H2O2 concentration. Microscopic observation of the particle motion, with segmentation of the image data, demonstrates that the particles move, on average, with the platinum-coated region oriented opposite to the direction of motion. Velocity autocorrelation and motion direction analyses show that the direction of motion is highly correlated with the particle orientation. The effect of the observation time interval on the measured translational diffusion coefficient and the apparent particle motion is analyzed.
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