20 citations · 57 across the 11 of their papers we have counts for
13 papers
Conditional spinodal decomposition in Li-Mg anodes for lithium metal batteries
Leonardo Shoji Aota, Aubin Leray, Yuqi Liu +14
The development of batteries with high energy density, short charging times and use of sustainable materials is critical for decarbonization. Magnesium (Mg)-based anodes for lithiu…
Domain Boundaries in a Metallic Distortive Polar Metal
Adrian Savovici, Barak Ratzker, Xuyang Zhou +12
Polar metals are an underexplored material class combining two properties that are typically incompatible, namely a polar crystal structure and reasonable electrical conductivity.…
Electric Field-Induced Formation of a 2D Adatom Gas on Cryogenic Li Surfaces
Shyam Katnagallu, Huan Zhao, Se-Ho Kim +3
Intense electrostatic fields, such as those able to break bonds and cause field-ion emission, can fundamentally alter the behaviour of atoms at and on the surface. Using density fu…
Stacking fault segregation imaging with analytical field ion microscopy
F. F. Morgado, L. T. Stephenson, S. Bhatt +8
Stacking faults (SF) are important structural defects that play an essential role in the deformation of engineering alloys. However, direct observation of stacking faults at the at…
Understanding atom probe's analytical performance for iron oxides using correlation histograms and ab initio calculations
Se-Ho Kim, Shalini Bhatt, Daniel K. Schreiber +4
Field evaporation from ionic or covalently bonded materials often leads to the emission of molecular ions. The metastability of these molecular ions, particularly under the influen…
A machine learning framework for quantifying chemical segregation and microstructural features in atom probe tomography data
Alaukik Saxena, Nikita Polin, Navyanth Kusampudi +7
Atom probe tomography (APT) is ideally suited to characterize and understand the interplay of chemical segregation and microstructure in modern multicomponent materials. Yet, the q…
Accurate computation of chemical contrast in field ion microscopy
Shalini Bhatt, Shyam Katnagallu, Jörg Neugebauer +1
We present a computational approach to simulate local contrast observed in Field Ion Microscopy (FIM). It is based on density-functional theory utilizing the Tersoff-Hamann approac…
Ab initio vacancy formation energies and kinetics at metal surfaces under high electric field
Shyam Katnagallu, Christoph Freysoldt, Baptiste Gault +1
Recording field ion microscope images under field evaporating conditions and subsequently reconstructing the underlying atomic configuration, called three-dimensional field ion mic…
Three-dimensional atomically-resolved analytical imaging with a field ion microscope
Shyam Katnagallu, Felipe Felipe F. Morgado, Isabelle Mouton +2
Atom probe tomography (APT) helps elucidate the link between the nanoscale chemical variations and physical properties, but it has limited structural resolution. Field ion microsco…
Revealing atomic-scale vacancy-solute interaction in nickel
Felipe F. Morgado, Shyam Katnagallu, Christoph Freysoldt +7
Imaging individual vacancies in solids and revealing their interactions with solute atoms remains one of the frontiers in microscopy and microanalysis. Here we study a creep-deform…
A model to predict image formation in the three-dimensional field ion microscope
Benjamin Klaes, Rodrigue Larde, Fabien Delaroche +5
This article presents a numerical model dedicated to the simulation of field ion microscopy (FIM). FIM was the first technique to image individual atoms on the surface of a materia…
Imaging individual solute atoms at crystalline imperfections in metals
Shyam Katnagallu, Leigh T. Stephenson, Isabelle Mouton +11
Directly imaging all atoms constituting a material and, maybe more importantly, crystalline defects that dictate materials' properties, remains a formidable challenge. Here, we pro…
Advanced data mining in field ion microscopy
Shyam Katnagallu, Baptiste Gault, Blazej Grabowski +3
Field ion microscopy (FIM) allows to image individual surface atoms by exploiting the effect of an intense electric field. Widespread use of atomic resolution imaging by FIM has be…