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Your search keyword '"Xiang, Shikai"' showing total 26 results
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26 results on '"Xiang, Shikai"'

6. FEM simulation of temperature field in a resistance-heated diamond anvil cell.

Author

Fan, Xiaobing, Xiang, Shikai, Chen, Haiyan, and Cai, Lingcang

Subjects
*DIAMOND anvil cell, *HEAT radiation & absorption, *THERMAL insulation, *FINITE element method, *TEMPERATURE
Abstract

The temperature of the sample in a resistance-heated diamond anvil cell is difficult to be measured directly and usually is calibrated by reading from the thermocouple attached to the diamond bevel. It is unclear how the temperature difference between the diamond bevel and the sample is affected by external factors such as thermal radiation and air convection. We performed a finite-element method simulation of the temperature field in the resistance-heated diamond anvil cell under different external conditions, and our simulations demonstrate that a thermal insulation cover of a low emissivity material and a unique double-layer structure can effectively reduce the temperature difference. Meanwhile, there is a non-negligible difference between the sample temperature at ambient pressure and that at high pressure when the diamond bevel has the same temperature. Some results of simulations have been confirmed by experiments using a designed double-layer cover. [ABSTRACT FROM AUTHOR]

Published
2021
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9. Refractive indices of shock-induced polymorphic Gd3Ga5O12 single crystals.

Author

Jia, Sui, Liu, Qiancheng, Li, Jun, Li, Jiabo, Zhou, Xianming, Xiang, Shikai, and Wu, Qiang

Subjects
SINGLE crystals, ELASTIC deformation, FREE surfaces, MECHANICAL shock, GALLIUM antimonide, REFRACTIVE index, GALLIUM, GARNET
Abstract

Gd 3 Ga 5 O 12 single crystals [gadolinium gallium garnet (GGG)] were shock compressed to elastic deformation, elastoplastic transformation, and structural phase-transition regimes with the corresponding single, two-wave, and three-wave structures. Velocity profiles at the front interface and the rear free surface of the sample are measured by a Doppler pin system. Results of these measurements are analyzed in detail, and the refractive index, n , at 1550 nm is obtained as a function of shock pressure or density. Incorporating previously published single-wave data above 100 GPa, characteristic variations in the refractive index are presented and discussed within the context of shock-induced polymorphism of the GGG. [ABSTRACT FROM AUTHOR]

Published
2019
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20. Pressure-induced structural phase transition and equation of state of LiTaO3

Author

Xiang, Shikai, primary, Liu, Lei, additional, Zhao, Jianzhou, additional, Zhou, Xianming, additional, Jing, Qiuming, additional, Zhang, Yi, additional, Liu, Shenggang, additional, Wang, Zhigang, additional, Bi, Yan, additional, Xu, Ji’an, additional, Geng, Huayun, additional, Dai, Chengda, additional, Cai, Lingcang, additional, Wu, Qiang, additional, Liu, Jing, additional, Wang, Chenju, additional, and Zhang, Xiulu, additional

Published
2013
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21. Strength and equation of state of fluorite phase CeO2 under high pressure

Author

Liu, Lei, primary, Song, Hong X., additional, Wang, Zhigang, additional, Geng, Hua Y., additional, Jing, Qiumin, additional, Zhang, Yi, additional, Liu, Shenggang, additional, Xiang, Shikai, additional, Bi, Yan, additional, Xu, Jian, additional, Li, Yanchun, additional, Li, Xiaodong, additional, and Liu, Jing, additional

Published
2012
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25. Iron(III) Chloride Catalyzed Oxidative Coupling Reaction of 1,2-Diarylethylene Derivatives.

Author

Ji, Derong, Su, Lidan, Zhao, Keqing, Wang, Biqin, Hu, Ping, Feng, Chun, Xiang, Shikai, Yang, Hua, and Zhang, Chenggang

Subjects
FERRIC chloride, IRON catalysts, OXIDATIVE coupling, PHENANTHRENE synthesis, CATALYTIC dehydrogenation, CHEMICAL derivatives, METAL catalysts
Abstract

A nontoxic FeCl3 catalyzed intramolecular oxidative coupling reaction was developed for mild synthesis of a series of phenanthrenes with different substituents. The method involves cross dehydrogenative coupling of a variety of 1,2-diarylethylene derivatives with di- tert-butylperoxide (DTBP) as a sole oxidant at room temperature in CH2Cl2/TFA (9:1 V/ V) to yield phenanthrenes in good to excellent yields. [ABSTRACT FROM AUTHOR]

Published
2013
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