4D scanning transmission electron microscopy - définition. Qu'est-ce que 4D scanning transmission electron microscopy
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Qu'est-ce (qui) est 4D scanning transmission electron microscopy - définition


4D scanning transmission electron microscopy         
  • MIDI STEM operation geometry
  • 267x267px
  • 228x228px
4D scanning transmission electron microscopy (4D STEM) is a subset of scanning transmission electron microscopy (STEM) which utilizes a pixelated electron detector to capture a convergent beam electron diffraction (CBED) pattern at each scan location. This technique captures a 2 dimensional reciprocal space image associated with each scan point as the beam rasters across a 2 dimensional region in real space, hence the name 4D STEM.
Scanning transmission electron microscopy         
  • Inside the aberration corrector ([[hexapole]]-hexapole type)
  • STEM-DPC imaging of Fe<sub>60</sub>Al<sub>40</sub>, where the spiral structure is ferromagnetic, and the surrounding region is non-magnetic
  • Atomic resolution imaging of SrTiO<sub>3</sub>, using annular dark field (ADF) and annular bright field (ABF) detectors. Overlay: strontium (green), titanium (grey) and oxygen (red)
  • An ultrahigh-vacuum STEM equipped with a 3rd-order spherical aberration corrector
  • Schematic of differential phase contrast imaging, with the beam being deflected by a magnetic field in the material
  • Schematic of a STEM with aberration corrector
TYPE OF TRANSMISSION ELECTRON MICROSCOPE
Scanning transmission electron microscope; Scanning Transmission Electron Microscope; S/TEM; Scanning Transmission Electron Microscopy; Scanning-transmission electron microscope; STEM study
A scanning transmission electron microscope (STEM) is a type of transmission electron microscope (TEM). Pronunciation is [stɛm] or [ɛsti:i:ɛm].
Scanning electron cryomicroscopy         
Scanning electron cryomicroscopy (CryoSEM) is a form of electron microscopy where a hydrated but cryogenically fixed sample is imaged on a scanning electron microscope's cold stage in a cryogenic chamber. The cooling is usually achieved with liquid nitrogen.