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1. chinaXiv:201705.00426 [pdf]

Influence of the electroplating pretreatment on corrosion mechanism of NdFeB magnets

Zhou, QY [Zhou Qiaoying][ 1 ]; Li, G [Li Gang][ 1 ]; Liu, Z [Liu Zhuang][ 1 ]; Guo, S [Guo Shuai][ 1 ]; Yan, A [Yan Aru][ 1 ]; Lee, D [Lee Don][ 1 ]; Li, JZ [Li Jianzhong][ 2 ]

The electroplating pretreatment of NdFeB magnets was simulated in this study, and the effect of the pickling process on element, matrix morphology and texture was discussed. The results showed that in the ordinary circumstance the acid solution concentrat

submitted time 2017-05-02 Hits682Downloads430 Comment 0

2. chinaXiv:201703.00608 [pdf]

Determining the upper limit of Γee for the Y(4260)

X. H. Mo; G. Li; C. Z. Yuan; K. L. He; H. M. Hu; Hu J. H.; P. Wang; Z. Y. Wang
Subjects: Physics >> Condensed Matter: Structural, Mechanical and Thermal Properties

By fitting the R values between 3.7 and 5.0 GeV measured by the BES Collaboration, the upper limit of the electron width of the newly discovered resonance Y(4260) is determined to be 240 eV at 90% C.L. Together with the BaBar measurement on Γee? B(Y(4260) → π+π- J/ψ), this implies a large decay width of Y (4260) → π+π- J/ψ final states.

submitted time 2017-03-26 Hits12714Downloads954 Comment 0

3. chinaXiv:201606.00110 [pdf]

Thermal rectification in coupled rotor lattices with gradient mass

Meng An; J. N. Zhou; F. G. Li; J. W. Xiong.
Subjects: Physics >> Condensed Matter: Structural, Mechanical and Thermal Properties

Heat conduction through one-dimensional (1D) coupled rotator lattices is investigated in the presence of mass gradient. It is found that thermal current in the direction of mass increasing is not asymmetric with heat flux though mass decreasing system, which is called thermal rectification. Moreover, we find that the larger is the mass gradient, the more evident is the thermal rectification effect, which is consistent with FPU lattice with mass gradient. Based on the influences of the thermal rectification on shape parameters K and A of nearest-neighbor interactions, the average temperature of atomic chain and the system size, a optimum thermal rectifier is designed, which thermal rectification efficiency has reached 70. These investigations would contribute to controlling and manipulating thermal current.

submitted time 2016-06-14 Hits1617Downloads627 Comment 0

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