Results 1 to 10 of about 230,641 (260)

Biomaterials for 4D stem cell culture [PDF]

open access: yesCurrent Opinion in Solid State and Materials Science, 2016
Stem cells reside in complex three-dimensional (3D) environments within the body that change with time, promoting various cellular functions and processes such as migration and differentiation. These complex changes in the surrounding environment dictate cell fate yet, until recently, have been challenging to mimic within cell culture systems. Hydrogel-
Amber M, Hilderbrand   +5 more
openaire   +3 more sources

4D-STEM Ptychography for Electron-Beam-Sensitive Materials [PDF]

open access: yesACS Central Science, 2022
Recent advances in high-speed pixelated electron detectors have substantially facilitated the implementation of four-dimensional scanning transmission electron microscopy (4D-STEM). A critical application of 4D-STEM is electron ptychography, which reveals the atomic structure of a specimen by reconstructing its transmission function from redundant ...
Guanxing Li, Hui Zhang, Yu Han
openaire   +4 more sources

Template-Derived Masks for 4D-STEM

open access: yesCommunications Materials
Fast pixelated detectors in scanning transmission electron microscopy (STEM) enable acquisition of a two-dimensional diffraction pattern at every probe position, known as four-dimensional STEM (4D-STEM).
Yining Xie   +5 more
doaj   +2 more sources

4D-STEM of Beam-Sensitive Materials [PDF]

open access: yesAccounts of Chemical Research, 2021
ConspectusScanning electron nanobeam diffraction, or 4D-STEM (four-dimensional scanning transmission electron microscopy), is a flexible and powerful approach to elucidate structure from "soft" materials that are challenging to image in the transmission electron microscope because their structure is easily damaged by the electron beam.
Karen C. Bustillo   +6 more
openaire   +4 more sources

Denoising 4D STEM datasets with PCA [PDF]

open access: yesBIO Web of Conferences
Potapov Leonid, Wu Mingjian
doaj   +2 more sources

HaloTag-based reporters for sparse labeling and cell tracking

open access: yesFly, 2022
Multiscale analysis of morphogenesis requires to follow and measure in real-time the in vivo behaviour of large numbers of individual cells over long period of time.
Lydie Couturier   +6 more
doaj   +1 more source

Preliminary Study on Effect of Lactiplantibacillus plantarum on Osteoporosis in the Ovariectomized Rat

open access: yesFood Science of Animal Resources, 2023
Osteoporosis is a growing global health concern primarily associated with decreased estrogen in postmenopausal women. Recently, some strains of probiotics were examined for potential anti-osteoporotic effects.
Eun-Sun Jin   +7 more
doaj   +1 more source

Probing atomic-scale symmetry breaking by rotationally invariant machine learning of multidimensional electron scattering

open access: yesnpj Computational Materials, 2021
The 4D scanning transmission electron microscopy (STEM) method maps the structure and functionality of solids on the atomic scale, yielding information-rich data sets describing the interatomic electric and magnetic fields, structural and electronic ...
Mark P. Oxley   +5 more
doaj   +1 more source

Powder Nano-Beam Diffraction in Scanning Electron Microscope: Fast and Simple Method for Analysis of Nanoparticle Crystal Structure

open access: yesNanomaterials, 2021
We introduce a novel scanning electron microscopy (SEM) method which yields powder electron diffraction patterns. The only requirement is that the SEM microscope must be equipped with a pixelated detector of transmitted electrons. The pixelated detectors
Miroslav Slouf   +3 more
doaj   +1 more source

Imaging the electron charge density in monolayer MoS2 at the Ã…ngstrom scale

open access: yesNature Communications, 2023
Four-dimensional scanning transmission electron microscopy (4D-STEM) has recently gained widespread attention for its ability to image atomic electric fields with sub-Ã…ngstrom spatial resolution.
Joel Martis   +17 more
doaj   +1 more source

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