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炭/炭复合材料表面生物活性钙磷涂层XRD和Raman光谱研究 黄敏1,黄剑锋1,王新木2,李贺军1,熊信柏1,张秀莲1,马威2 (1.西北工业大学,炭/炭复合材料工程技术研究中心,陕西,西安,710072;2.解放军第四军医大学,口腔医院颌面外科,陕西,西安,710032) 摘要:通过声电沉积工艺在炭/炭复合材料表面制备了生物活性透钙磷石涂层,用XRD,EDAX及Raman光谱对炭/炭复合材料改性前后的表面特征进行了研究.结果表明,与传统电结晶工艺相比,声电沉积工艺所制透钙磷石涂层晶面间距减小,炭/炭复合材料与透钙磷石涂层间形成了C-O-P,C-O-H等化学键合.同时探讨了成键机理,认为声电沉积工艺是声电表面改性,声化学合成以及电结晶工艺的有机组合. 关键词:声电沉积; 透钙磷石; 炭/炭复合材料; 生物活性涂层; [全文内容正在添加中] ......
花状TeO2微/纳米结构的制备及Raman光谱研究姜佳良,张骏,宋志超烟台大学光电信息科学技术学院摘 要:以Bi2Te3粉末为原料,采用热蒸发的方法成功制备出花状TeO2微/纳米结构.利用扫描电子显微镜(SEM)对合成产物的形貌进行表征,结果显示样品的微/纳米结构是由大量微/纳米片堆叠成的花状团簇.通过EDS发现,样品由Te和O两种元素组成.利用激光共聚焦拉曼光谱仪对合成产物的Raman光谱进行表征,结果显示合成产物的光谱与TeO2晶体一致,并且随着热蒸发温度的升高,拉曼谱峰的峰值越高,特征峰越锐利,在硅片上制备出的产物的结晶度越好.关键词:氧化碲;微/纳米结构;热蒸发法;Raman光谱;......
One-step Synthesis of Shape-controllable Gold Nanoparticles and Their Application in Surface-enhanced Raman ScatteringLanlan Sun,Dongxu Zhao,Meng Ding,Haifeng Zhao,Zhenzhong Zhang,Binghui Li,Dezhen... molecule,4-aminothiophenol(4-ATP) was used to test the surface-enhanced Raman scattering(SERS) activity of these gold NPs and the results indicated good Raman activity on these substrates.And the enhancement factor(EF......
应温度,反应时间,液固比和NaOH浓度对MgSiO3在NaOH亚熔盐体系中的浸出过程的影响,得出优化实验条件为:反应温度为210 ℃,反应时间为180min,液固比为6:1,NaOH浓度为80%.在优化实验的基础上,采用Raman光谱对反应过程进行在线检测,利用XRD和IR光谱分析反应后的水浸渣结构变化,解析MgSiO3在NaOH亚熔盐体系中的反应机理.结果表明:在反应过程中,SiO4中的Si-O..., and concentration of NaOH of 80%. Based on the optimized experiment, on-line detection for the reaction process was made by using Raman spectroscopy, XRD and IR were used to analyze the structural change......
Temperature-dependent Raman scattering and photoluminescence in YBa2Cu3O7 doped with SiO2 and Zn0.95Mn0.05O nanoparticles:comparative studyMunirah A.Al MessiereDepartment of Physics,College of Science,Imam Abdulrahman Bin Faisal University摘 要:A combined study examining the temperature dependencies of Raman scattering and photoluminescence(PL)of a YBa2......
-nano copper particles film from the surface-enhanced Raman scattering (SERS) effect using 1×10-5 mol/L Rhodamine 6G as probe molecules reveal that the single-crystalline silicon modified with copper micro-nanoparticles can enhance Raman signals of interesting molecules because the surface-plasmon effects of copper particles can improve the local electric fields of the sample. Key words: photoinduced......
Studies on Lattice Vibrational Modes of Na5Eu(WO4)4 Single Crystal by Raman Spectrum郭常新,潘峻,郭立群摘 要:<正> Raman and infrared spectra of host luminescent crystal Na5Eu(WO4)4 in several different geometric con-figurations have been investigated.The symmetrical species of lattice vibrational modes of the crystal have beenanalysed by means of the site......
Investigation on Raman spectra and thermal properties of LuVO4 and Nd:LuVO4 crystals徐民,于浩海,张怀金,许心光,王继扬State Key Laboratory of Crystal Materials,Shandong University摘 要:Lattice vibration modes of LuVO4 and Nd:LuVO4 crystals were calculated by using space group theory,and polarized Raman spectra were recorded with four different geometrical scattering......
Structural, morphological, Raman, optical, magnetic, and antibacterial characteristics of CeO2 nanostructuresNoor Badshah22. Department of Basic Science, University of Engineering and Technology摘 要... structure of CeO2 for both samples. A Raman spectroscopic study confirmed the XRD results and furthermore indicated the presence of a large number of oxygen vacancies in the nanosheets. These oxygen......
Influence of Co Content on Raman and Photoluminescence Spectra of Co Doped ZnO NanowiresY.Q. Chang1) , P.W. Wang2), S.L. Ni1), Y. Long1) and X.D. Li1) 1) School of Materials Science and Engineering... are of single phase and crystallize in wurtzite ZnO structure. The lattice parameter a increases with increasing Co content, while the parameter c has no obvious change with increasing Co. Raman spectra show......
