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Diamine molecules double lock-link structured graphene oxide sheets for high-performance sodium ions storage 会议论文
作者:  Zhang, Yu-Shan;  Zhang, Bin-Mei;  Hu, Yu-Xia;  Li, Jun;  Lu, Chun
收藏  |  浏览/下载:18/0  |  提交时间:2020/12/18
Formation of dendritic nanostructures in Pyrex glass anodically bonded to silicon coated with an aluminum thin film 会议论文
14th International Conference on the Strength of Materials (ICSMA 14), Xian Jiaotong Univ, Xian, PEOPLES R CHINA, JUN 04-09, 2006
作者:  Hu YQ(胡宇群);  Zhao YP(赵亚溥);  Yu TX(余同希);  Zhao YP
收藏  |  浏览/下载:1096/39  |  提交时间:2009/07/23
Rare-earth doped tungsten tellurite glasses and waveguides: Fabrication and characterization (EI CONFERENCE) 会议论文
Physics of Non-Crystalline Solids 10, October 15, 2004 - October 15, 2004, Parma, Italy
Conti G. N.; Berneschi S.; Bettinelli M.; Brenci M.; Chen B.; Pelli S.; Speghini A.; Righini G. C.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
Tungsten tellurite glasses doped with Er3+  Tm3+  Pr3+  and Ho3+ ions were prepared by melt quenching. The glass matrix was the same for all types of glasses and had a high sodium content in order to allow the fabrication of waveguides using an ion-exchange technique. The absorption spectra of the glasses were measured and the Judd-Ofelt parameters q were obtained from the experimental oscillator strengths of the f &rarr f transitions. Er3+ doped glasses showed a very high quantum efficiency when comparing the calculated radiative decay time with the measured lifetime of the 4I 13/2 metastable level. Ag+ Na+ ion-exchanged planar waveguides were successfully obtained in all types of glasses and characterized by the prism coupling technique. It turned out that the diffusion constant values are very similar for glasses containing different rare-earth ions with the same concentration  while  at least for the Er 3+ doped ones  the diffusion constant changes with the ions concentration. 2004 Elsevier B.V. All rights reserved.  


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