Results 11 to 20 of about 218,239 (261)
4D-STEM Ptychography for Electron-Beam-Sensitive Materials. [PDF]
ACS Cent Sci, 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 ...
Li G, Zhang H, Han Y.
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Biomaterials for 4D stem cell culture. [PDF]
Curr Opin Solid State Mater Sci, 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-
Hilderbrand AM +5 more
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Orientation mapping of graphene using 4D STEM-in-SEM. [PDF]
Ultramicroscopy, 2020 A scanning diffraction technique is implemented in the scanning electron microscope. The technique, referred to as 4D STEM-in-SEM (four-dimensional scanning transmission electron microscopy in the scanning electron microscope), collects a diffraction pattern from each point on a sample which is saved to disk for further analysis.
Caplins BW +3 more
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Cryogenic 4D-STEM analysis of an amorphous-crystalline polymer blend: Combined nanocrystalline and amorphous phase mapping [PDF]
iScience, 2022 Summary: Understanding and visualizing the heterogeneous structure of immiscible semicrystalline polymer systems is critical for optimizing their morphology and microstructure. We demonstrate a cryogenic 4D-STEM technique using a combination of amorphous
Jennifer Donohue +7 more
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Template-Derived Masks for 4D-STEM
Communications MaterialsFast 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
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Optimizing contrast in automated 4D-STEM cryo-tomography
Microscopy and MicroanalysisAbstract 4D STEM is an emerging approach to electron microscopy. While it was developed principally for high-resolution studies in materials science, the possibility to collect the entire transmitted flux makes it attractive for cryomicroscopy in application to life science and radiation-sensitive materials where dose efficiency is of
Seifer S +3 more
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Shadow montage and cone-beam reconstruction in 4D-STEM tomography
Microscopy and MicroanalysisAbstract Diffraction images in a scanning transmission electron microscope (STEM) provide a real-space projection of the sample at sufficient probe defocus. Such shadow images may be acquired patch by patch in a 4D-STEM setup using a pixelated detector and assembled into a shadow montage.
Seifer S, Houben L, Elbaum M.
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Denoising 4D STEM datasets with PCA [PDF]
BIO Web of ConferencesPotapov Leonid, Wu Mingjian
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4D-STEM of Beam-Sensitive Materials [PDF]
Accounts 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
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HaloTag-based reporters for sparse labeling and cell tracking
Fly, 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
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