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Study on Structural Instabilities of Au Modified SiOx Nanowire as Induced by In-situ Electron Beam Irradiation in Transmission Electron Microscope

Abstract

当今纳米科学技术研究背景要求我们不仅要从纳米尺度(极小空间限制或“纳尺寸”效应),而且要从纳、皮、飞秒时间尺度(超快时间限制或“纳时间”效应)去揭示材料的结构和性能。但在现有文献中,除朱贤方等对电子束和离子束辐照下硅中纳米孔以及电子束辐照下碳纳米管及SiOx纳米线的结构不稳定性进行较系统研究外,目前我们尚未发现有人从非平衡、极度局域和超快角度对电子束辐照下金属纳米颗粒修饰的纳米线的结构不稳定性进行系统研究。 为此,本论文利用我们发展成熟的透射电镜原位观察技术,进一步系统深入地研究了高能电子束非平衡、极度局域和超快辐照对Au修饰SiOx纳米线以及SiOx纳米线结构不稳定性的影响。 首先,我们...With continuing and rapid development of nanoscience and nanotechnology, it is increasingly becoming indispensable to reveal structures and properties of materials not only at nanometer scale (or under extremely small space limitation) but also at nano-, pisco-, or femto-second scale (or under extremely short time limitation). However, there are few systematic investigations into the structural in...学位:工学硕士院系专业:材料学院_材料学学号:2072010115008

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