9 papers · 1 filter
Specimen preparation for atom probe tomography analysis of complex multifunctional nanoparticles and nanostructures: state-of-the-art and challenges
Varatharaja Nallathambi, Se-Ho Kim, Nikita Polin +4
Atom probe tomography (APT) provides the three-dimensional composition of materials at near-atomic length scales, achieving detection limits in the range of tens of atomic parts-pe…
Kinetically controlling surface atom arrangements in thermally robust, amorphous high-entropy alloy nanoparticles by solvent selection
Varatharaja Nallathambi, Se-Ho Kim, Baptiste Gault +3
The ability to tailor nanoscale surface atom arrangements through multi-elemental compositional control provides high-entropy nanoalloys with promising functional properties. Devel…
Machine learning enhanced atom probe tomography analysis: a snapshot review
Yue Li, Ye Wei, Alaukik Saxena +3
Atom probe tomography (APT) is a burgeoning characterization technique that provides compositional mapping of materials in three-dimensions at near-atomic scale. Since its signific…
Advancing atom probe tomography capabilities to understand bone microstructures at the near-atomic scale
Tim M. Schwarz, Maïtena Dumont, Victoria Garcia-Giner +3
Bone structure is generally hierarchically organized into organic (collagen, proteins,...), inorganic (hydroxyapatite (HAP)) components. However, many fundamental mechanisms of the…
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…
Formation of cellular/lamellar nanostructure in SmCo-type binary and ternary Sm-Co-Zr magnets
Nikita Polin, Konstantin P. Skokov, Alex Aubert +6
2:17 SmCo magnets with a quinary composition of Sm(Co,Cu,Fe,Zr) are industrially relevant hard magnets used in high temperature and corrosive environments. Their complex c…