Results 31 to 40 of about 486,453 (314)
Coherent Electron Source for Ultrafast Electron Diffraction and Imaging
EPJ Web of Conferences, 2013 We numerically investigate the suitability of photoexcited nanotips as a source of coherent femtosecond single electron pulses for ultrafast surface-sensitive electron diffraction and non-destructive imaging with low-energy electrons.
Xu C. +3 more
doaj +1 more source
Quantum theory of electronic double-slit diffraction [PDF]
, 2006 The phenomena of electron, neutron, atomic and molecular diffraction have been studied by many experiments, and these experiments are explained by some theoretical works. In this paper, we study electronic double-slit diffraction with quantum mechanical approach. We can obtain the results: (1) When the slit width $a$ is in the range of $3\lambda\sim 50\
arxiv +1 more source
Femtosecond gas-phase mega-electron-volt ultrafast electron diffraction
Structural Dynamics, 2019 The development of ultrafast gas electron diffraction with nonrelativistic electrons has enabled the determination of molecular structures with atomic spatial resolution.
X. Shen +13 more
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Precession electron diffraction – a topical review
IUCrJ, 2015 In the 20 years since precession electron diffraction (PED) was introduced, it has grown from a little-known niche technique to one that is seen as a cornerstone of electron crystallography. It is now used primarily in two ways. The first is to determine
Paul A. Midgley, Alexander S. Eggeman
doaj +1 more source
Electron diffraction covering a wide angular range from Bragg diffraction to small-angle diffraction [PDF]
Microscopy 67, 171 (2018), 2019 We construct an electron optical system to investigate Bragg diffraction (the crystal lattice plane, $10^{-2}$-$10^{-3}$ rad) with the objective lens turned off by adjusting the current in the intermediate lenses. A crossover was located on the selected-area aperture plane. Thus, the dark-field imaging can be performed by using a selected-area aperture
arxiv +1 more source
Electron Backscatter Diffraction In The Sem: Is Electron Diffraction In The Tem Obsolete?
Microscopy and Microanalysis, 1997 Abstract The technique of electron backscatter diffraction (EBSD) in the scanning electron microscope is currently finding a large number of important applications in materials science. The patterns formed through EBSD were first studied over 40 years ago.
Raymond P. Goehner +2 more
openaire +2 more sources
Double-shot MeV electron diffraction and microscopy
Structural Dynamics, 2017 In this paper, we study by numerical simulations a time-resolved MeV electron scattering mode where two consecutive electron pulses are used to capture the evolution of a material sample on 10 ps time scales.
P. Musumeci, D. Cesar, J. Maxson
doaj +1 more source
Moire structures in twisted bilayer graphene studied by transmission electron microscopy [PDF]
Ultramicroscopy 197, 46-52 (2019), 2018 We investigate imaging of moire structures in free-standing twisted bilayer graphene (TBG) carried out by transmission electron microscopy (TEM) in diffraction and in-line Gabor holography modes. Electron diffraction patterns of TBG acquired at typical TEM electron energies of 80 - 300 keV exhibit the diffraction peaks caused by diffraction on ...
arxiv +1 more source
Application of Electron Diffraction to Biological Electron Microscopy
Biophysical Journal, 1969 Three methods by which electron diffraction may be applied to problems in electron microscopy are discussed from a fundamental point of view, and experimental applications with biological specimens are demonstrated for each case. It is shown that wide-angle electron diffraction provides valuable information for evaluating specimen damage that can occur
Glaeser, Robert M., Thomas, Gareth.
openaire +4 more sources
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source