Dynamical Simulations for TEM, STEM and SEM

Visiting Scholar from Carnegie Mellon University, Marc DeGraef, will be giving a short graduate-level course entitled "Dynamical Simulation for TEM, STEM and SEM". 

The course will consist of three, 75 minute lectures:

Tuesday, May 14 - Thursday, May 16
10:30am-11:45am.

It will be located on West Campus: 1305 Kinnear Rd, Conference Room "B".

The first lecture will begin the course with an overview of the basic dynamical scattering formalism, starting from the Schroedinger equation.  Along the way we will define a number of important parameters: excitation error, extinction distance, absorption length.  We will then show how the equation can be solved, using either direct numerical integration of the differential equations, the scattering matrix formalism, or the Bloch wave approach.

In the second lecture, we will focus on several TEM/STEM-based modalities, including selected area diffraction and convergent beam electron diffraction.  We will describe how the column approximation can be used in conjunction with the dynamical approach to simulate images of perfect foils and foils with a variety of lattice defects.  STEM observations require slightly more involved simulations, which we will describe in terms of a number of instrumental parameters, such as camera length and bean convergence angle.

The third and final lecture will focus on imaging and diffraction modalities in the SEM, including electron channeling, electron back-scatter diffraction, BSE imaging, and so on.  We will describe how the dynamical theory can be modified to take into account the stochastic nature of the electron scattering process. Throughout the lectures, we will show several basic examples of how one can begin to write code for some of these experimental modalities.

If interested in attending, please contact:

Ashley Swartz
swartz.202@osu.edu
614-292-2708

There are a limited amount of seats available.