Development of a specimen-cooling holder for the electron microscpe utilizing a refrigeratorrial using high-voltage electron microscopy

开发利用高压电子显微镜冰箱的电子显微镜样品冷却支架

• 批准号: 06555176
• 负责人: SAKA Hiroyasu
• 金额: $ 4.93万
• 依托单位: NAGOYA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555176/
• 关键词: In-situ observation; Transmission electron microscopy; Specimen cooling holder at very low temperatures; Refrigerator; 電顕内その場実験; 極低温; その場実験

In-situ observation in the electron microscope gives unique information on structural changes and behavior of defects in materials. So far, emphasis has be placed on phenomena taking place at high temparature. However, as can be seen from hign-temperature superconductors, in-situ observation at very low temperature has gathered much attention. However, problem here is that an in-situ experiment using liquid helium is very difficult to carry out because handling of liquid helium needs considerable skills. For this reason, only a limited number of groups have managed to carry out in-situ cooling experiments at very low temperature such as 10K.However, recently a high-performance refrigerator is available and has been applied to superconducting magnets and so on. The purpose of the present project is to utilize the refrigerator to cool a specimen in the elecoscope. It is expected that development of such a cooling holder makes in-situ cooling experiments at very low temprature to be carried out more easily as a routine workIn the present project such a cooling holder has been designed and a preliminary holder has been constructed. Unfortunately this holder is not a completed one. But it is hoped that such a cooling holder will be comercially manufactured in near future.

在电子显微镜下的原位观察提供了材料中结构变化和缺陷行为的独特信息。到目前为止，重点放在高温下发生的现象上。然而，从高温超导体中可以看出，极低温下的原位观测受到了人们的重视。然而，这里的问题是，利用液氦进行现场实验是非常困难的，因为处理液氦需要相当的技能。因此，只有少数小组能够在极低的温度（如10K）下进行原位冷却实验。然而，最近一种高性能的冰箱已经问世，并已应用于超导磁体等领域。本项目的目的是利用冰箱来冷却显微镜中的标本。期望这种冷却架的研制能使极低温的现场冷却实验作为一项常规工作更容易地进行。本项目已设计了这种冷却架，并初步建造了一个冷却架。不幸的是，这个支架不是一个完整的。但人们希望这种冷却装置能在不久的将来实现商业化生产。

项目成果

K.Sasaki, H.Saka and T.Arii: "Vibrational motion of grain boundary in intermetallic compound induced by electron beam irradiation" Materials Transaction, JIM. 37. 1037-1043 (1996)

K.Sasaki、H.Saka 和 T.Arii：“电子束辐照引起的金属间化合物中晶界的振动运动”Materials Transaction，JIM。

K.Sasaki,H.Saka and T.Arii: "Vibrational motion of grain boundary in intermetallic compound induced by electron beam irradiation" Materials Transactions JIM. 37. 1037-1043 (1996)

K.Sasaki、H.Saka 和 T.Arii：“电子束辐照引起的金属间化合物中晶界的振动运动”Materials Transactions JIM。