排序方式: 共有44条查询结果,搜索用时 125 毫秒
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利用溶胶凝胶法在玻璃衬底上制备了金-二氧化钛(Au-TiO2)复合纳米薄膜,研究了热处理温度对复合薄膜表面纳米颗粒沉积的影响。利用原子力显微镜对样品进行了形貌表征,结果显示:复合薄膜是由纳米微晶组成的致密膜,温度越高越有利于Au粒子的形成。在550℃的热处理温度下,薄膜表面沉积的纳米微晶的粒径约为100nm。利用紫外-可见分光光度计测量了反射谱线,结果表明:由于局域表面等离子体共振(LSPR)的产生,在不同的热处理温度下,第一个反射峰(短波长处)不发生变化,第二个反射峰(长波长处)发生漂移(红移)。 相似文献
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浅谈《药物分析》理论教学 总被引:1,自引:0,他引:1
为培养学生学习《药物分析》的兴趣,提高自主学习的能力,在课堂教学中积极建立课程框架,贯穿学习主线,并灵活应用多种教学方法,改变目前高职教育中学生在学习过程中的被动地位,变被动为主动,进而改善教学效果,提升学生检验药品质量的综合能力。 相似文献
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Two-dimensional transition metal dichalcogenides heterostructures have stimulated wide interest not only for the fundamental research,but also for the application of next generation electronic and optoelectronic devices.Herein,we report a successful two-step chemical vapor deposition strategy to construct vertically stacked van der Waals epitaxial In2Se3/MoSe2 heterostructures.Transmission electron microscopy characterization reveals clearly that the In2Se3 has well-aligned lattice orientation with the substrate of monolayer MoSe2.Due to the interaction between the In2Se3 and MoSe2 layers,the heterostructure shows the quenching and red-shift of photoluminescence.Moreover,the current rectification behavior and photovoltaic effect can be observed from the heterostructure,which is attributed to the unique band structure alignment of the heterostructure,and is further confirmed by Kevin probe force microscopy measurement.The synthesis approach via van der Waals epitaxy in this work can expand the way to fabricate a variety of two-dimensional heterostructures for potential applications in electronic and optoelectronic devices. 相似文献
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