Information depth in backscattered electron microscopy of nanoparticles within a solid matrix

2018 ◽  
Vol 138 ◽  
pp. 145-153 ◽  
Author(s):  
Johannes A. Österreicher ◽  
Florian Grabner ◽  
Andreas Schiffl ◽  
Sabine Schwarz ◽  
Gilles R. Bourret
Keyword(s):  
Electron Microscopy ◽  
Solid Matrix ◽  
Information Depth ◽  
Backscattered Electron

Development of 200 kV Scanning-Transmission Electron Microscope

1974 ◽  
Vol 32 ◽  
pp. 410-411
Author(s):  
H. Koike ◽  
S. Sakurai ◽  
K. Ueno ◽  
M. Watanabe
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Scanning Transmission Electron Microscope ◽  
The Other ◽  
Morphological Observation ◽  
Magnetic Domains ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Backscattered Electron ◽  
Increasing Demand

In recent years, there has been increasing demand for higher voltage SEMs, in the field of surface observation, especially that of magnetic domains, dislocations, and electron channeling patterns by backscattered electron microscopy. On the other hand, the resolution of the CTEM has now reached 1 ∼ 2Å, and several reports have recently been made on the observation of atom images, indicating that the ultimate goal of morphological observation has beem nearly achieved.

Electron microscope and microprobe analysis of chlorite–mica stacks in the Wenlock turbidites, mid Wales, U.K.

1986 ◽  
Vol 123 (3) ◽  
pp. 299-306 ◽  
Author(s):  
Andrew J. Dimberline
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Source Area ◽  
Pressure Solution ◽  
Pore Waters ◽  
Bulk Rock ◽  
High K ◽  
Backscattered Electron

AbstractChlorite–mica stacks in the Wenlock turbidites have been studied using backscattered electron microscopy and electron microprobe analysis, combined with thin-section work and bulk rock chemical analysis. The stacks occur in fine sandstones and silt–mud turbidites and range in length from < 30 μm to 1.5 mm. They consist of interlayered packets of Fe-rich chlorite and mica.Combined textural and chemical data suggest that many of the stacks represent altered detrital biotite micas. A four-stage alteration sequence is proposed:(1) Subaerial alteration of biotite, in the source area, to interlayered biotite–hydrobiotite/vermiculite.(2) Post-depositional collapse of vermiculite to form a mica phase under conditions of high K+/H+ in the sediment pore waters.(3) Decrease in K+/H+ ratio, possibly due to H+ build up in the fermentation zone, causing alteration of biotite layers to chlorite.(4) Kinking of the stacks and pressure solution of chlorite early in the development of cleavage.

scholarly journals Domain structure imaging in PMN-PT crystals using channelling-contrast backscattered electron microscopy

2018 ◽  
Vol 443 ◽  
pp. 012038 ◽  
Author(s):  
E O Vlasov ◽  
D S Chezganov ◽  
L V Gimadeeva ◽  
A D Ushakov ◽  
Q Hu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Domain Structure ◽  
Backscattered Electron

scholarly journals Unobstructed Multiscale Imaging of Tissue Sections for Ultrastructural Pathology Analysis by Backscattered Electron Scanning Microscopy

2019 ◽  
Vol 68 (1) ◽  
pp. 9-23 ◽  
Author(s):  
Mike Reichelt ◽  
Meredith Sagolla ◽  
Anand K. Katakam ◽  
Joshua D. Webster
Keyword(s):  
Electron Microscopy ◽  
Multiple Scales ◽  
Ultrastructural Level ◽  
Wide Field ◽  
Diverse Range ◽  
Tissue Sections ◽  
Ultrastructural Pathology ◽  
Backscattered Electron ◽  
Multiscale Imaging ◽  
Scanning Electron

Ultrastructural analysis of healthy, diseased, or experimental tissues is essential in diagnostic and investigative pathology. Evaluation of large tissue areas with suborganelle resolution is challenging because biological structures ranging from several millimeters to nanometers in size need to be identified and imaged while maintaining context over multiple scales. Imaging with field emission scanning electron microscopes (FE-SEMs) is uniquely suited for this task. We describe an efficient workflow for the preparation and unobstructed multiscale imaging of tissue sections with backscattered electron scanning electron microscopy (BSE-SEM) for applications in ultrastructural pathology. We demonstrate that a diverse range of tissues, processed by conventional electron microscopy protocols and avoiding the use of mordanting agents, can be imaged on standard glass slides over multiple scales, from the histological to the ultrastructural level, without any visual obstructions. Our workflow takes advantage of the very large scan fields possible with modern FE-SEMs that allow for the acquisition of wide-field overview images which can be explored at the ultrastructural level by digitally zooming into the images. Examples from applications in pulmonary research and neuropathology demonstrate the versatility and efficiency of this method. This BSE-SEM-based multiscale imaging procedure promises to substantially simplify and accelerate ultrastructural tissue analysis in pathology.

Monitoring water pathways through mungbean pods using backscattered electron microscopy

1996 ◽  
Vol 34 (2) ◽  
pp. 177-189
Author(s):  
Philippa J.R. Uwins ◽  
Kemal A. Caglar ◽  
Bruce C. Imrie ◽  
Anya J.E. Yago
Keyword(s):  
Electron Microscopy ◽  
Backscattered Electron
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