training for advanced research


Glossary terms about Resolution

The limit of resolution is the smallest separation at which two points can be seen as distinct entities.

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18 pages mention Resolution

Additional material
Shindo, D. Analytical electron microscopy for materials science. Berlin : Springer, 2002. Shindo, D, Hiraga, K. High-resolution electron microscopy for materials science. 
Background information - What is transmission electron microscopy?
It allows detailed micro-structural examination through high-resolution and high magnification imaging. 
Combining images
Concepts - introduction
The use of electrons has an impact on image resolution and absence of colour, and explains the two dimensional nature of micrographs (images/photographs). 
Diffraction patterns
Electron gun
Image appearance
Image formation basics
This two-step process forms the basis of image formation during high-resolution transmission electron microscopy (HRTEM). 
Image types
Images from electrons
Click on any of the images on this page to see them at their full resolution
Inorganic sample/physical science specimen preparation for TEM
Machine operating procedures
This involves imaging for high resolution (HREM), diffraction and sample tilting, and for microanalysis [but for this see the module on microanalysis]. 
Machine settings
Problems with lenses: aberrations
Spherical and chromatic aberrations limit the resolution of conventional electron microscopes. 
Definitions resolution the ability to distinguish closely spaced points as separate points. 
Specimen/sample chamber
This is important for obtaining precisely oriented diffraction patterns and high resolution images. 
Spherical aberration
This lens defect limits the resolution of modern TEM. 
The electron wavelength
The higher the accelerating voltage, the smaller the wavelength of the electrons and the higher the possible achievable resolution