English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Improving image quality by zero-loss energy filtering - quantitative assessment by means of image cross-correlation

Grimm, R., Typke, D., & Baumeister, W. (1998). Improving image quality by zero-loss energy filtering - quantitative assessment by means of image cross-correlation. Journal of Microscopy, 190(Part 3), 339-349.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Grimm, R., Author
Typke, D.1, Author              
Baumeister, W.1, Author              
Affiliations:
1External Organizations, ou_persistent22              

Content

show
hide
Free keywords: Constant enhancement; Zero-loss energy filtering; Fourier ring correlation; Root-mean-square contrast.; Electron-microscopy; Tem; Contrast; Ratio; Mode; Ice.; Multidisciplinary.
 Abstract: Fourier ring correlation and root-mean-square contrast of pairs of images, taken under identical conditions, were used as criteria of image quality for comparing unfiltered with zero-loss energy-filtered imaging using a TEM equipped with a post-column energy filter. For three different specimens (amorphous carbon film, macromolecules in light negative stain, virus particles in deep negative stain) the dependence of these quantities on electron dose, specimen thickness and defocus was investigated. A model, based on simple assumptions, was used to describe quantitatively their dependence on electron dose and specimen thickness. It was found that energy filtering is most advantageous for low-dose imaging and small defocus values. The gain due to energy filtering strongly increases with specimen thickness, whereby the dependence is linear for light scattering elements. For thick specimens, the gain by energy filtering is more pronounced in the resolution range between 4 and 2 nm than for lower spatial frequencies. [References: 17]

Details

show
hide
Language(s):
 Dates: 1998-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 318704
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Microscopy
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 190 (Part 3) Sequence Number: - Start / End Page: 339 - 349 Identifier: -