3 papers
physics.app-ph2025
Chromatic and Spherical Aberration Correction with Hexapole and Quadrupole Fields
Shigeyuki Morishita, Hidetaka Sawada, Norihiro Okoshi +4
We report the development of a chromatic and spherical aberration corrector based on combinations of hexapole and quadrupole fields. Thick hexapole fields are used to generate nega…
physics.atom-ph2023
Imaging of isotope diffusion using atomic-scale vibrational spectroscopy
Ryosuke Senga, Yung-Chang Lin, Shigeyuki Morishita +4
The spatial resolutions of even the most sensitive isotope analysis techniques based on light or ion probes are limited to a few hundred nanometres. Although vibration spectroscopy…
cond-mat.mtrl-sci2018
Position and momentum mapping of vibrations in graphene nanostructures in the electron microscope
Ryosuke Senga, Kazu Suenaga, Paolo Barone +3
Propagating atomic vibrational waves, phonons, rule important thermal, mechanical, optoelectronic and transport characteristics of materials. Thus the knowledge of phonon dispersio…