Optical sample rod system for in-situ liquid and gas environment transmission electron microscope

Abstract

The invention discloses an optical sample rod system for an in-situ liquid and gas environment transmission electron microscope. The system comprises a sealed small sample table frame for manufacturing liquid and gas environments with different pressures in an ultrahigh vacuum environment, a hollow sample rod frame, a gas and liquid guide pipe arranged in the sample rod frame, an energy transmission optical fiber, a sealing rubber ring arranged in the small sample table frame and the like. A gas (liquid) environment exists in the sample rod head frame and is connected with external gas (liquid) inlet equipment through a gas (liquid) guide pipe. One end of the energy transmission optical fiber with the controllable wave band is fixed to the miniature sample table, and a main body of the energy transmission optical fiber extends out of a clamping groove in the miniature sample table, penetrates through the sample rod frame to be connected with an external light path unit and is used foradjusting the illumination environment in the miniature sample table. The system is suitable for exploring various physical and chemical life reaction processes such as gas-phase reaction, liquid-phase reaction, solid-phase and gas-phase interfaces, solid-phase and liquid-phase interfaces, photochemical reaction and the like.

Description

technical field [0001] The invention relates to the field of in-situ experimental research on transmission electron microscope parts and nanomaterials, in particular to an optical sample rod system for an in-situ liquid gas environment transmission electron microscope. Background technique [0002] The external environment of materials and the interaction between various external fields and materials are the root causes of material properties and structural changes at the micro-nano or even atomic scale. Can the in-situ detection of materials in the external environment and at the micro-nano or even atomic scale be possible? The evolution process of the microstructure under the action of various external fields becomes the key to exploring the physical and chemical life characteristics of materials. The in-situ and synchronous high-resolution monitoring technology of the atomic-scale structure and properties of matter under the influence of the external environment directly ...

AI Technical Summary

Problems solved by technology

The more serious problem is that the use functions of related products imported from my country are greatly restricted, and flexible demand customization makes it difficult to better meet the needs of my country's scientific research industry

Therefore, the in-situ sample rod system imported from abroad with a single external environment is far from meeting the requirements of research work in most cases, which greatly limits the development of my country's in-situ observation technology field.

More importantly, this bought-in technology development method has caused my country's scientific research to lose its ability to conduct original exploration and experience accumulation. This is a great challenge for the development of a new generation of original scientific research instruments and the acquisition of original technology exploration.

As far as the field of electron microscope technology is concerned, there is currently no commercially available sample rod system for TEM at home and abroad that can realize in-situ illumination of liquid environment and in-situ illumination of gas environment at the same time. Based on this appeal and the applicant’s years of experience With a solid working foundation in this field, the present invention maximizes the introduction of gas environment, liquid environment and optical signals in the ultra-high vacuum environment of the transmission electron microscope to measure and study the macroscopic properties of materials and the evolution process of atomic-scale microstructure

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