In-situ TEM observation of nano-dynamics to point defects in crystals by a ultra high-speed CCD camera

2006年，利用高速相机研究了SiC/SiC复合材料辐照缺陷和裂纹扩展的纳米动力学过程。总结了近3年来的原位透射电镜观测结果。我们最初的目的可能达到了70%，但我认为我已经足够明确了这项研究的目的。此外，在德国研制了一种基于脉冲激光照射目标的新思路的脉冲电子光源，并产生了高强度的电子。他们将这种电子源改进为普通电子显微镜电子枪的新型电子显微镜在美国研制成功，并于2006年9月在札幌举行的国际显微镜大会上进行了报告。由于已经对材料科学的一些课题进行了研究，并且有了口头宣传和海报宣传，使得本研究的国际定位更加明确。在本研究中，我们使用了一般热电子源和场发射电子源，而对于美国装置，使用了脉冲电子源。我们的目标是用高速CCD相机记录一系列事件，而美国团队的目标是用脉冲电子源记录每个现象作为频闪图像，以了解一系列高速现象。然而，我们的方法的优势在于了解了某一现象的起源，并在上述会议中对未来的发展进行了展望。我们在这项研究中探索了一个新的研究领域，我们将在未来继续研究，应该能够通过上面提到的一个新项目继续研究。另外，由于在过去三年的研究中发现了新的问题，可以对下一个项目有所反映。

In 2006, We investigated nano dynamics about irradiation defects and crack propagation of SiC/SiC composite material by a high-speed camera. Furthermore, we summarized results of in-situ TEM observation in the past three years. Accomplishment of our original purpose may be reached up to 70%, but it is thought that I clarified the purpose of this study enough. In addition, development of a pulse electron source of light to be based on a new idea by pulsed laser irradiation to a target in Germany, and to generate the electron which was high strength was done. The new electron microscope which they improved this electronic source and changed for electron gun of a normal electron microscope was developed in U.S.A., and it was reported in an international microscope congress held in Sapporo in September, 2006. Because a study was already made about some topics of materials science, and there were word of mouth and announcement with a poster, positioning of international of this study became clear. In this study, we used a general thermo electron source and a field emission electron source, however, for the American device, a pulsed electron source used. We aimed to record a series of events by a high speed CCD camera, but American team aimed to record an each phenomenon by a pulsed electron source as a strobe image to understand a series of high speed phenomena. However, it was advantage in our method to know the initiation of a certain phenomenon, and future development was expected in the above conference. We explored a new research field in this study and we will continue it in future and should be able to go ahead through a new project as mentioned above. In addition, because new issues were found through this study for the past three years, could reflect for the next project.