Force and electrical behavior testing device under Nanometer lines in-situ compressing in transmission electron microscope

Abstract

The invention provides a test device of the mechanical and electrical properties of a nano-wire compressed in situ in a transmission electron microscope, which pertains to the field of nano-material property test in situ. The device employs a piezoceramic drawing unit, a micro-cantilever mechanical testing system and an electrical measuring system to achieve compression in situ of a single nano-wire or other one-dimensional nano-materials in the transmission electron microscope, and employs the imaging system of the transmission electron microscope to obtain deformation information on a nano or even atomic scale during the compression process. At the same time, the invention can achieve the quantitative measurements of such mechanical properties as elasticity, plasticity, bending and fracturing, and the electrical properties measurement of one-dimensional nano-materials to allow the study on the transport property of a charge during the compression process. The device of the invention has the advantages of simple structure, easy operation, a wide range of application, intuition and quantitative measurement and is beneficial to the explanation and discovery of the good comprehensive property of nano-materials in respect of mechanics, electricity, etc.

Description

Technical field: [0001] The invention relates to a device for testing electromechanical properties under in-situ compression of nanowires in a transmission electron microscope, which belongs to the field of in-situ detection of properties of nanometer materials. Background technique: [0002] Realizing the manipulation and in-situ performance measurement of monomeric nanostructures is a key scientific and technological issue that is the bottleneck in the research of new nanostructures, new properties and new devices, especially in the transmission electron microscope, due to its narrow space, people It is more difficult to realize the test of the single nanostructure. [0003] It should be pointed out that although people have conducted in-depth studies on the mechanical and electrical properties of monomeric nanomaterials in recent years, due to their difficulty and complexity, no accepted conclusions have been formed so far. One-dimensional nanomaterials are used as inter...

AI Technical Summary

Problems solved by technology

Although this method can effectively give information on the atomic scale, it cannot quantify the elastic coefficient of a single one-dimensional nanomaterial

[0008] None of the above methods can measure the electrical properties of a single one-dimensional nanomaterial under stress, and can no longer meet the current requirements for testing the mechanical properties, electrical properties, and mechanical-electrical coupling performance of nanomaterials on the microscopic scale.

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