透射电子显微镜下原位研究贵金属纳米材料微结构演变与引起反常物理性能的相关性

贵金属纳米材料的反常物理性能研究不但能使现有贵金属纳米材料构建功能材料和器件的稳定性得到有效控制，还能拓展贵金属纳米材料在新型功能材料和器件领域的应用，对推进贵金属纳米材料应用具有重要的意义。目前，关于反常物理性能贵金属纳米材料的设计和应用的研究鲜有报道。基于申请者前期工作积累，利用TEM和EELS，联合纳米材料原位电学、力学、加热性能测试系统，拟开展如下工作：①设计和构建具有反常物理性能的贵金属纳米材料；②在TEM内构建化学反应容器研究具有反常物理性能的贵金属纳米材料生长机理和热学性能；③利用原位性能测试系统研究贵金属纳米材料弹性形变、不稳定相结构的稳定性、固体纳米薄层流动性、表面“自清洁”等反常物理性能、微结构演变与这些反常物理性能的相关性、引起反常物理性能的机理等；④贵金属纳米材料反常物理性能在可折叠透明导电薄膜、肿瘤的多模式精准诊断和高效治疗、高活性和高选择性催化剂中的应用探索。

The study of the noble metal nanomaterials with anomalous physical properties can not only effectively control the stability of functional materials and electronic devices composed of noble metal nanomaterials, but also expand the application of noble metal nanomaterials in new functional applications and electronic devices. It is of great significance to expand the application of noble metal nanomaterials. At present, there are few reports on the design and applications of noble metal nanomaterials with anomalous physical properties. Based on the previous work, the following research areas will be covered in this project: ① design and construction of noble metal nanomaterials with anomalous physical properties. ② study of growth mechanism and thermal properties of noble metal nanomaterials with anomalous physical properties by building a chemical reaction vessel in TEM. ③ anomalous physical properties (elastic deformation, stabilization of unstable phase structure, solid nano-thin layer fluidity, surface "self-cleaning", etc.), correlation between microstructure evolution and anomalous physical properties and mechanic study of noble metal nanomaterials by in situ TEM. ④ noble metal nanomaterials with anomalous physical properties applied to foldable transparent conductive films, multi-mode accurate diagnosis and high-efficiency treatment of tumor, high activity and high selectivity catalysts.