3 papers
physics.ins-det2025
Emittance Minimization for Aberration Correction II: Physics-informed Bayesian Optimization of an Electron Microscope
Desheng Ma, Steven E. Zeltmann, Chenyu Zhang +6
Aberration-corrected Scanning Transmission Electron Microscopy (STEM) has become an essential tool in understanding materials at the atomic scale. However, tuning the aberration co…
cond-mat.mtrl-sci2025
Electron ptychography reveals a ferroelectricity dominated by anion displacements
Harikrishnan KP, Ruijuan Xu, Kinnary Patel +9
Sodium niobate, a lead-free ferroic material, hosts delicately-balanced, competing order parameters, including ferroelectric states that can be stabilized by epitaxial strain. Here…
physics.ins-det2024
Emittance Minimization for Aberration Correction I: Aberration correction of an electron microscope without knowing the aberration coefficients
Desheng Ma, Steven E. Zeltmann, Chenyu Zhang +6
Precise alignment of the electron beam is critical for successful application of scanning transmission electron microscopes (STEM) to understanding materials at atomic level. Despi…