Advanced electron microscopy physics
DTU Department of Physics
To develop a fundamental physical understanding of electron microscopy and simulation skills to design, analyze and interpret electron microscopy of matter at the atomic level.
Learning objectives:
A student who has met the objectives of the course will be able to:
- Describe the physics in electron scattering on matter
- Describe the physics in electron optics, contrast transfer function and partial coherence
- Explain resolution limits and sampling criteria
- Explain image formation mechanisms in broad-beam and focused electron-beam modes
- Simulate electron microscopy images created using high-resolution transmission electron microscopy and scanning transmission electron microscopy modes
- Analyze simulated electron microscopy images for atomic-resolution structural motifs
- Explore impact of electron optics and electron-matter interactions on image formations
- Design an electron microscopy experiment to retrieve a pre-defined atomic structure
Contents:
The course will cover electron-matter interactions, aberration-corrected electron optics, contrast transfer functions, partial coherence, high-resolution transmission electron microscopy (HRTEM), scanning transmission electron microscopy (STEM), electron exit-wave functions, image formation mechanism, electron detection and resolution limits. The topics will be introduced in lectures and explored in computer exercises based on the python-based package abTEM