Atomic-scale tomography (AST) is defined and its place in microscopy is considered. Arguments are made that AST, as defined, would be the ultimate microscopy. The available pathways for achieving AST are examined and we conclude that atom probe tomography (APT) may be a viable basis for AST on its own and that APT in conjunction with transmission electron microscopy is a likely path as well. Some possible configurations of instrumentation for achieving AST are described. The concept of metaimages is introduced where data from multiple techniques are melded to create synergies in a multidimensional data structure. When coupled with integrated computational materials engineering, structure-properties microscopy is envisioned. The implications of AST for science and technology are explored.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1017/S1431927613000494 | DOI Listing |
ACS Nano
February 2025
IMTEK, University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany.
Interfacial phase change memory (iPCM) devices have been shown to switch with significantly reduced power consumption, compared with conventional phase-change memory devices. These iPCMs are based on a periodic structure of nanometer-sized layers of chalcogenides called a chalcogenide superlattice (CSL). Strong temperature increases have been observed within the CSL during the switching procedure, questioning the stability of the CSL structure.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.
Controlling materials' composition and structure to selectively adsorb rare earth elements (REE) is critical for better separations. Understanding how local electric potentials affect REE adsorption and how they can be modified via chemical substitution is of fundamental importance. We present calculated mean inner potentials for muscovite and phlogopite micas in excellent agreement with measured values of +10.
View Article and Find Full Text PDFMicrosc Microanal
February 2025
Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada.
Atom probe tomography (APT) enables three-dimensional chemical mapping with near-atomic scale resolution. However, this method requires precise sample preparation, which is typically achieved using a focused ion beam (FIB) microscope. As the ion beam induces some degree of damage to the sample, it is necessary to apply a protective layer over the region of interest (ROI).
View Article and Find Full Text PDFCommun Mater
December 2024
Department of Materials Science and Engineering, University of Washington, Seattle, WA USA.
Dental enamel is subjected to a lifetime of de- and re-mineralization cycles in the oral environment, the cumulative effects of which cause embrittlement with age. However, the understanding of atomic scale mechanisms of dental enamel aging is still at its infancy, particularly regarding where compositional differences occur in the hydroxyapatite nanocrystals and what underlying mechanisms might be responsible. Here, we use atom probe tomography to compare enamel from a young (22 years old) and a senior (56 years old) adult donor tooth.
View Article and Find Full Text PDFAdv Sci (Weinh)
January 2025
Max Planck Institute for Sustainable Materials, 40237, Düsseldorf, Germany.
The development of sustainable transportation and communication systems requires an increase in both energy density and capacity retention of Li-batteries. Using substrates forming a solid solution with body-centered cubic Li enhances the cycle stability of anode-less batteries. However, it remains unclear how the substrate microstructure affects the lithiation behavior.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!