Autor: Hu, X.L. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Electric Interaction between Two Identical Conducting Spheres in a Uniform Electric Field
Autorzy:: Gao, X.
Wang, Q.
Li, C.
Hu, L.
Sun, G.
Powiązania:: https://bibliotekanauki.pl/articles/1401870.pdf
Data publikacji:: 2015-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 41.20.Cv
47.65.Gx
Opis:: An experimental apparatus is devised to measure the interaction between two spheres separated by a small gap in a uniform electric field. The results show that the interaction between two conducting spheres is near that between two dielectric spheres with high permittivity. Accordingly, the calculation can be simplified by mirror image method, for it is only available for conducting system. A method using multiple mirror images of point charges is put forward to analyze the induction of two identical conducting spheres in a uniform electric field. The key operation on how to add compensative charges is emphasized and given out in detail. The results from experiment and calculation are compared, and they agree with each other very well.
Źródło:: Acta Physica Polonica A; 2015, 128, 3; 289-293
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Structural Stabilities and Elastic Constants of EuX (X = O, S, Se, and Te) Compounds at High Pressure
Autorzy:: Kong, B.
Zhou, Z.
Sun, X.
Zhang, L.
Ling-Hu, R.
Powiązania:: https://bibliotekanauki.pl/articles/1400144.pdf
Data publikacji:: 2013-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.66.-f
46.70.-p
61.43.-j
75.50.-y
Opis:: The structural stabilities, elastic properties and charge transfers of EuX (X = O, S, Se, Te) compounds as a function of pressure are investigated extensively using first-principles calculations. The ground-state parameters, such as lattice constants, bulk modulus are predicted and compared with the available data, our results are satisfactory. The calculated phase transition pressures from the NaCl-type (B1) structure to the CsCl-type (B2) structure for EuX (X = O, S, Se, Te) also accord with the experiments. Particularly, the elastic constants of EuX (X = O, S, Se, Te) under zero pressure and high pressure are simulated appropriately for the first time via density functional theory. The softening behaviors of the elastic shear modulus $C_{44}$ under pressure for the B1 phase of EuX (X = O, S, Se, Te) are captured, which should be responsible for the pressure-induced structural phase transition in the EuX system. It is also suggested that the softening behavior might be induced partly by the p → d and f → d electron transfers of Eu atom under pressure. In addition, the aggregate elastic modulus (B, G, E), Poisson's ratio (σ), Debye temperature $\Theta p_{D}$ are also successfully obtained for both B1 and B2 phases of EuX.
Źródło:: Acta Physica Polonica A; 2013, 123, 4; 720-727
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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