Broadband boundary effects on Brownian motion.
@article{Mo2015BroadbandBE,
title={Broadband boundary effects on Brownian motion.},
author={Jianyong Mo and A. Simha and Mark Raizen},
journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
year={2015},
volume={92 6},
pages={
062106
}
}Brownian motion of particles in confined fluids is important for many applications, yet the effects of the boundary over a wide range of time scales are still not well understood. We report high-bandwidth, comprehensive measurements of Brownian motion of an optically trapped micrometer-sized silica sphere in water near an approximately flat wall. At short distances we observe anisotropic Brownian motion with respect to the wall. We find that surface confinement not only occurs in the long time…
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