RESEARCH AND APPLICATIONOD DIRECT OBSERVATION OF QUICK FLUCTUATION OF ATOM IMAGES BY ATOM RESOLUTION ELECTRON MICROSCOPES AND TV-IMAGEPROCESSING SYSTEM

原子分辨率电子显微镜和电视图像处理系统直接观察原子图像快速波动的研究与应用

• 批准号: 03452084
• 负责人: HASHIMOTO Hatsujiro
• 金额: $ 2.62万
• 依托单位: OKAYAMA UNIVERSITY OF SCIENCE
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03452084/
• 关键词: small displacement of atoms; TVimage processing; imagesubtraction; swaying of atoms in crystal

In order to visualize the local fluctuation of atoms less than lattice spacing of-2A^^ﾟ in crystals under the high resolution electron microscope observation, successive subtraction of the images of atoms which are recorded in the TV frames has been carried out by using a TV system and a computer and the small displacement of atom images of 1/10 of atomic distance (-0.2A^^ﾟ) within 1/30 seconds have been observed with high accuracy and high efficiency.In the process of achieving this observation, the following facts have been carried out.1).An image processing apparatus, Olympus AVIO XL-500, and time base corrector, Victor SAT400, have been purchased by the fund and used.2).The small displacement of atoms has been displayed on the screen with color using the XL-500 and a computer.3).One of us visited National Center for Electron Microscope (NCEM) of University of California, Berkeley USA and recorded the structure images of silicon and platinum in the video tape by using 1MeV Atom Reso … More lution Electron Microscope (AREM) in NCEM operated at 800KV. Images have been recorded by changing the accelerating voltages. The recorded images have been analyzed by the present method in Japan. The observed and analyzed results may contribute to the better understanding of elemental process of radiation damage of silicon and platinum by high energy electrons.4).Using nitinol shape memory alloy (Ni_<50> Ti_<50>), atomic structure images of martensite structure and austenite structure, which appear below and upper the phase transformation temperature at 75 C respectively, have been recorded in VTR. Though heavy drift of the images and orientation change of the specimens have disturbed the recording of the sharp images. However after many trials, some clear atomic structure images in some orientation of the specimen near the phase transformation temperature have been obtained. Since it is necessary to adjust the specimen in special orientation which enable us to see the movement of atoms directly when the phase transformation of martensite to austenite takes place, some more observations have now been carrying out. Some satisfactory results are supposed to be obtained in near future. Less

为了在高分辨电子显微镜下观察晶体中小于晶格间距的原子局域涨落，利用电视系统和计算机对电视帧中记录的原子像进行连续相减，使原子像发生1/10原子距离的小位移（-0.2A ^）的情况下进行了高精度和高效率的观测。在实现该观测的过程中，进行了以下事实：1）图像处理装置Olympus AVIO XL-500和时基校正器维克托SAT 400，已被基金购买并使用。2）.原子的微小位移已用XL-500和计算机彩色显示在屏幕上。3）.我们中的一个人参观了加州大学国家电子显微镜中心（NCEM），用1 MeV原子吸收光谱仪记录了硅和铂的结构图像 ...更多信息 在NCEM中的溶解电子显微镜（AREM）在800 KV下操作。通过改变加速电压记录图像。记录的图像已在日本分析本方法。观察和分析的结果有助于更好地理解高能电子辐照硅和铂的基本过程。4）用镍钛合金（Ni_<50>Ti_<50>）在VTR上记录了马氏体组织和奥氏体组织的原子结构图像，它们分别出现在相变温度75 ℃以下和75 ℃以上。虽然图像的严重漂移和样品的取向变化干扰了清晰图像的记录。但经过多次实验，在相变温度附近得到了样品某些方向上清晰的原子结构图像。由于有必要将试样调整到特定的方向，使我们能够直接看到马氏体向奥氏体相变发生时原子的运动，现在已经进行了更多的观察。预计在不久的将来会得到一些令人满意的结果。少

项目成果

H.Hashimoto: "Detection atom movement of 0.05-0.01nm in 1/30 seconds" Electron Microscopy(Beijing). A. 75-76 (1991)

H.Hashimoto：“在1/30秒内检测0.05-0.01nm的原子运动”电子显微镜（北京）。

Hashimoto.H: "Images of Th atoms and clusters taken by imaging plate and TV at 200kV,400kV and 800kV" Electron Microscopy(Proc.EUREM92(Granada)). 1. 101-102 (1992)

Hashimoto.H：“通过成像板和电视在 200kV、400kV 和 800kV 下拍摄的 Th 原子和团簇图像”电子显微镜 (Proc.EUREM92(Granada))。

Z.Y.Song: "Stacking faults in plastically deformed FeAl alloy with the B2 structure" Philosophical Magazine A. 64. 333-339 (1991)

Z.Y.Song：“B2 结构塑性变形 FeAl 合金中的堆垛层错”哲学杂志 A. 64. 333-339 (1991)

E.Sukedai: "HREM study of interface of a TiAl-base composite material containing Ti2AlC" Electron Microscopy(Proc.5th APEM conference(Beijing)). 316-317 (1992)

E.Sukedai：“含 Ti2AlC 的 TiAl 基复合材料界面的 HREM 研究”电子显微镜（Proc.5th APEM 会议（北京））。

Sukedai.E: "Investigation about change of microstructure of omega particle in Ti-20mass%Mo alloy dueto aging using high resolution electron microscopy and image processing methods" Electron Microscopy(Proc.EUREM92(Granada)). 1. 547-548 (1992)

Sukedai.E:%20"调查%20about%20change%20of%20microstruction%20of%20omega%20article%20in%20Ti-20mass%Mo%20alloy%20 dueto%20aging%20using%20high%20resolution%20electron%20microscopy%20and%20image