Spatial resolution in secondary-electron microscopy
Abstract
We first review the significance of resolution and contrast in electron microscopy and the effect of the electron optics on these two quantities. We then outline the physics of the generation of secondary electrons (SEs) and their transport and emission from the surface of a specimen. Contrast and resolution are discussed for different kinds of SE imaging in scanning electron microscope (SEM) and scanning-transmission microscope instruments, with some emphasis on the observation of individual atoms and atomic columns in a thin specimen. The possibility of achieving atomic resolution from a bulk specimen at SEM energies is also considered.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 09, 2022
- Source ID
- 10.1093/jmicro/dfac022
Entities
People
- R F Egerton
- Yupeng Zhu
Organizations
- Brookhaven National Laboratory
- Natural Sciences and Engineering Research Council
- Office of Science
- University of Alberta