纳米材料拉伸装置的设计及定量化分析

以压电陶瓷为主体设计了一种用于单体纳米材料原位拉伸变形实验的装置,为了实现力学性能的定量化测量,在该装置中加装了用于测量力的悬臂梁针尖,通过悬臂梁针尖的变形可实现纳米材料力学性能测试中的定量化性能测试.利用该自主设计的纳米材料拉伸仪,以利用热蒸发法制备的非晶氧化硅纳米线为实例,在光学显微镜和扫描电子显微镜下进行了原位力学性能测试实验.实验结果显示:该原位纳米材料拉伸装置可以有效地实现纳米材料的拉伸变形操作,同时对施加在材料样品本身上的力学信号给出定量化的结果.

Design of tensile device of nanomaterials and quantitative analysis

Based on a piezoelectric ceramic, a new experimental device was designed which could be used to conduct the in-situ tensile deformation test for one dimensional nanomaterials. A cantilever tip, which was used to measure the force, was also introduced to do the quantitative measurements during the mechanical properties experiments of nanomaterials, the force loaded to the sample can be calculated via the deformation of the cantilever tip. With this homemade in-situ nanomaterials tensile device, in-situ tensile experiments under both optical microscopy and scanning electron microscopy of single SiO₂ nanowires prepared by thermal evaporation method were conducted. The experimental results indicate that this device can conduct the tensile deformation test effectively and give the quantitative result of the force signal loaded to the material sample itself at the same time.