143rd Magnetic Materials Center Seminar
July 27, 2010, 9:00-
7th floor small seminar room, Sengen
Advances in UV laser atom probe and its future applications
K. Hono
In the 52nd International Field Emission Symposium held in the 1st week of July in Sydney, we presented five papers on our UV assisted laser atom probe. We feel that a new dimension will arise in the atom probe instrumentation by employing UV femtosecond laser. I will discuss the merit of using UV laser for atom probe analysis using the data we presented in the last IFES.

Intuitive understanding of Fourier transform and HRTEM imaging
T. Ohkubo
In order to explain something from the HRTEM image, you need to understand the basis of imaging theory. Although the dynamical diffraction theory for thick specimen is a little complicate, weak phase object approximation for thin specimen is not so difficult. To help you to understand this, I will explain the basis, especially phase contrast transfer function, by intuitive method rather than equations. For the HRTEM imaging, Fourier transform is very important. Therefore, I will also explain 1D and 2D Fourier transform by showing some examples.