Y . B . Gao

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A simple and fast numerical method is developed capable of accurately determining the 3D rotational dynamics of a magnetic particle chain in an infinite fluid domain. The focus is to control the alternating breakup and reformation of the bead chain which we believe is essential to achieve effective fluid mixing at small scales. The numerical scheme makes(More)
[1] A long period Pc5 pulsation was observed at Phimai in Thailand, shortly after the origin time of the Sumatra earthquake on December 26, 2004. The localized nature and the period of oscillations suggest that the long period magnetic pulsation was generated by dynamo action in the lower ionosphere, set up by an atmospheric pressure pulse which propagated(More)
X iv :q ua nt -p h/ 97 06 04 7v 1 2 0 Ju n 19 97 Partial Factorization of Wave Function for A Quantum Dissipation System C. P. Sun Institute of Theoretical Physics, Academia Sinica, Beijing 100080, P. R. China and Physics Department, the Chinese University of Hong Kong, Hong Kong, China Y. B. Gao, H.F.Dong Institute of Theoretical Physics, Northeast Normal(More)
The fluctuation-dissipation relation is well known for a quantum open system with energy dissipation. In this paper a similar underlying relation is found between the bath fluctuation and the dephasing of the quantum open system, for which energy is conserved, but the information is leaking into the bath. To obtain this relation we revisit the universal,(More)
Magnetic particles are widely used in biological research and bioanalytical applications. As the corresponding tools are progressively being miniaturized and integrated, the understanding of particle dynamics and the control of particles down to the level of single particles become important. Here, we describe a numerical model to simulate the dynamic(More)
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