Results 41 to 50 of about 1,743,146 (385)

Four-Dimensional Scanning Transmission Electron Microscopy (4D-STEM): From Scanning Nanodiffraction to Ptychography and Beyond

open access: yesMicroscopy and Microanalysis, 2019
Scanning transmission electron microscopy (STEM) is widely used for imaging, diffraction, and spectroscopy of materials down to atomic resolution. Recent advances in detector technology and computational methods have enabled many experiments that record ...
C. Ophus
semanticscholar   +1 more source

Sample Preparation and Imaging of Exosomes by Transmission Electron Microscopy.

open access: yesJournal of Visualized Experiments, 2018
Exosomes are nano-sized extracellular vesicles secreted by body fluids and are known to represent the characteristics of cells that secrete them. The contents and morphology of the secreted vesicles reflect cell behavior or physiological status, for ...
Minkyo Jung, J. Mun
semanticscholar   +1 more source

Microscopy of glazed layers formed during high temperature sliding wear at 750C [PDF]

open access: yes, 2003
The evolution of microstructures in the glazed layer formed during high temperature sliding wear of Nimonic 80A against Stellite 6 at 750 ◦C using a speed of 0.314ms−1 under a load of 7N has been investigated using scanning electron microscopy (SEM ...
Burnell-Gary, J. S.   +4 more
core   +1 more source

Quality of extracellular vesicle images by transmission electron microscopy is operator and protocol dependent

open access: yesJournal of Extracellular Vesicles, 2019
Transmission electron microscopy (TEM) has nanometre resolution and can be used to distinguish single extracellular vesicles (EVs) from non-EV particles. TEM images of EVs are a result of operator image selection. To which extent operator image selection
L. Rikkert   +3 more
semanticscholar   +1 more source

Deep Learning of Atomically Resolved Scanning Transmission Electron Microscopy Images: Chemical Identification and Tracking Local Transformations. [PDF]

open access: yesACS Nano, 2017
Recent advances in scanning transmission electron and scanning probe microscopies have opened exciting opportunities in probing the materials structural parameters and various functional properties in real space with angstrom-level precision.
M. Ziatdinov   +9 more
semanticscholar   +1 more source

Scanning ultrafast electron microscopy [PDF]

open access: yes, 2010
Progress has been made in the development of four-dimensional ultrafast electron microscopy, which enables space-time imaging of structural dynamics in the condensed phase. In ultrafast electron microscopy, the electrons are accelerated, typically to 200
Mohammed, Omar F.   +2 more
core   +1 more source

Nanostructured, mesoporous Au/TiO2 model catalysts – structure, stability and catalytic properties

open access: yesBeilstein Journal of Nanotechnology, 2011
Aiming at model systems with close-to-realistic transport properties, we have prepared and studied planar Au/TiO2 thin-film model catalysts consisting of a thin mesoporous TiO2 film of 200–400 nm thickness with Au nanoparticles, with a mean particle size
Matthias Roos   +8 more
doaj   +1 more source

Transmission Electron Microscopy for Tobacco Chloroplast Ultrastructure

open access: yesBio-Protocol, 2015
The chloroplast is the site of photosynthesis that enabled and sustains aerobic life on Earth. Chloroplasts are relatively large organelles with a diameter of ~5 μm and width of ~2.5 μm, and so can be readily analysed by electron microscopy.
lina Yin   +3 more
doaj   +1 more source

Electron counting detectors in scanning transmission electron microscopy via hardware signal processing

open access: yesNature Communications, 2023
Transmission electron microscopy is a pivotal instrument in materials and biological sciences due to its ability to provide local structural and spectroscopic information on a wide range of materials.
Jonathan J. P. Peters   +6 more
doaj   +1 more source

Structural and gas-sensing properties of CuO–CuxFe3−xO4 nanostructured thin films [PDF]

open access: yes, 2010
Nanocrystalline CuO–CuxFe3−xO4 thin films were developed using a radio-frequency sputtering method followed by a thermal oxidation process. Thin films were deposited applying two very different conditions by varying the argon pressure and the target-to ...
Barnabé, Antoine   +7 more
core   +3 more sources

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