Scanning Electron Microscope A To Z
ثبت نشده
چکیده
Since the Scanning Electron Microscope (SEM) was first commercialized about 40 years ago, the SEM has shown a remarkable progress. Now, many types of SEMs are being used, and their performance and functions are greatly different from each other. To utilize these different SEMs, it is essential to recognize their features, as well as to understand the reasons for the contrast of SEM images. Thus, this document material is aimed at helping SEM users and future SEM users to understand the basics of the SEM, including the instrument principles , specimen preparation and elemental analysis.
منابع مشابه
Discussion of Electron Induced Atomic Number Contrast
In this paper, atomic number (Z) contrast from electron induced images is revisited. Z contrast obtained with a scanning electron microscope (SEM) is generally associated with the collection of backscattered electrons (BSEs) and is considered to exhibit a monotonic increase in BSE signal with Z [1]. However, there is no monotonic relationship of the backscattering coefficient, η, with Z at elec...
متن کاملFIB/SEM technology in NEMS/MEMS fabrication and investigation
FEI Helios NanoLab 600i microscope with Kleindiek MM3A-EM micromanipulators, controlled by microscope PC connected to Keithley 2400 Source Meter, has been used in our experiments. Due to limited space only several examples of FIB/SEM processes that have been conducted are presented here. They proof the great advantage of this technology in modifying single structures in short time. Streszczenie...
متن کاملCharacterization of self-affine surfaces from 3D digital reconstruction
A new experimental method aiming to the characterization of self-affine rough surfaces is presented. Based on a three dimensional reconstruction of the relief from stereo pairs obtained with a scanning electron microscope, it allows a non-destructive quantitative analysis of fracture surfaces, with a xy and z resolution only slightly lower than the original images. The roughness index of the fr...
متن کاملPatterned aluminum nanowires produced by electron beam at the surfaces of AlF3 single crystals
Cubicand rectangular-shape single crystals of a-AlF3 in sizes of 5–50 mm have been synthesized by a solid–vapor phase process. Using the electron beam induced decomposition of AlF3, a method is demonstrated for fabricating patterned aluminum nanowires in AlF3 substrate in a scanning electron microscope. By controlling the accelerating voltage, the beam current and scanning time, it is possible ...
متن کاملMicrostructural Evolution during DPRM Process of Semisolid Ledeburitic D2 Tool Steel
Semisolid metal processing is a relatively new technology that offers several advantages over liquid processing and solid processing because of the unique behaviour and characteristic microstructure of metals in this state. With the aim of finding a minimum process chain for the manufacture of high-quality production at minimal cost for forming, the microstructural evolution of the ledeburitic ...
متن کامل