transmission electron spectra

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• Scanning transmission electron microscopy — A scanning transmission electron microscope (STEM) is a type of transmission electron microscope. With it, the electrons pass through the specimen, but, as in scanning electron microscopy, the electron optics focus the beam into a narrow spot… …   Wikipedia

• Energy filtered transmission electron microscopy — (EFTEM) is a technique used in Transmission electron microscopy, in which only electrons of particular kinetic energies are used to form the image or diffraction pattern. The technique can be used to aid chemical analysis of the sample in… …   Wikipedia

• Electron energy loss spectroscopy — In electron energy loss spectroscopy (EELS) a material is exposed to a beam of electrons with a known, narrow range of kinetic energies. Some of the electrons will undergo inelastic scattering, which means that they lose energy and have their… …   Wikipedia

• Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …   Wikipedia

• Electron spectrometer — In an Electron spectrometer, an incoming beam of electrons is bent with electric or magnetic fields. As higher energy electrons will be bent less by the beam, this produces a spatially distributed range of energies. Electron spectrometers are… …   Wikipedia

• Scanning electron microscope — These pollen grains taken on an SEM show the characteristic depth of field of SEM micrographs …   Wikipedia

• Photoemission electron microscopy — (PEEM, also called photoelectron microscopy, PEM) is a widely used type of emission microscopy. PEEM utilizes local variations in electron emission to generate image contrast. The excitation is usually produced by UV light, synchrotron radiation… …   Wikipedia

• Auger electron spectroscopy — (AES; Auger pronounced|oːʒeː in French) is a common analytical technique used specifically in the study of surfaces and, more generally, in the area of materials science. Underlying the spectroscopic technique is the Auger effect, as it has come… …   Wikipedia

• Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …   Universalium

• Ondrej Krivanek — Ondrej L. Krivanek FRS (born August 1, 1950, as Ondřej Ladislav Křivánek) is a Czech/British physicist resident in the United States, and a leading developer of electron optical instrumentation. He was born in Prague, and graduated from a… …   Wikipedia

• Atom — The atom is the smallest unit of an element that retains the chemical properties of that element. An atom has an electron cloud consisting of negatively charged electrons surrounding a dense nucleus. The nucleus contains positively charged… …   Wikipedia