Tracy C. Lovejoy
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View article: Advances in atomic resolution secondary electron imaging
Advances in atomic resolution secondary electron imaging Open
We have developed an efficient detector of secondary electrons (SEs) for a high-performance scanning transmission electron microscope (STEM) and tested it on several materials. Using the detector at 60 keV, we resolved the nearest neighbor…
View article: Nion Swift FY2021 phase I Final Technical Report DE-SC0021546
Nion Swift FY2021 phase I Final Technical Report DE-SC0021546 Open
Phase I of the project is an on-going success. The enhanced and extended new application programming interface (API) developed in Phase I is in use at customer sites around the world: Berlin, UK, US, China, France, Austria. The modules dev…
View article: Near-Ideal Direct-Electron Focused-Probe 4D-STEM Data for Open-Source Phase Reconstructions
Near-Ideal Direct-Electron Focused-Probe 4D-STEM Data for Open-Source Phase Reconstructions Open
View article: High-temperature phonons in h-BN: momentum-resolved vibrational spectroscopy and theory
High-temperature phonons in h-BN: momentum-resolved vibrational spectroscopy and theory Open
Vibrations in materials and nanostructures at sufficiently high temperatures result in anharmonic atomic displacements, which leads to new phenomena such as thermal expansion and multiphonon scattering processes, with a profound impact on …
View article: Data Acquisition and Control of Electron Microscopes
Data Acquisition and Control of Electron Microscopes Open
Journal Article Data Acquisition and Control of Electron Microscopes Get access Chris E Meyer, Chris E Meyer Nion R&D, Kirkland, WA, USA Corresponding author: [email protected] Search for other works by this author on: Oxford Academic Google…
View article: Mapping Phonon Dispersion Surfaces at Nanometer Scale
Mapping Phonon Dispersion Surfaces at Nanometer Scale Open
View article: Advances in Momentum Resolved EELS
Advances in Momentum Resolved EELS Open
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the 'Save PDF' action button.
View article: Space- and Angle-Resolved Vibrational Spectroscopy to Probe the Local Phonon Modes at Planar Defects
Space- and Angle-Resolved Vibrational Spectroscopy to Probe the Local Phonon Modes at Planar Defects Open
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
View article: 5D-STEM: Live processing and display at 15,000 diffraction patterns per second
5D-STEM: Live processing and display at 15,000 diffraction patterns per second Open
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the 'Save PDF' action button.
View article: Single-defect phonons imaged by electron microscopy
Single-defect phonons imaged by electron microscopy Open
View article: Damage-free Analysis of Biological Materials by Vibrational Spectroscopy in the EM
Damage-free Analysis of Biological Materials by Vibrational Spectroscopy in the EM Open
In summary, vibrational spectroscopy in the electron microscope promises to probe biological materials in a way that is similar to infrared spectroscopy, at a spatial resolution of about 30-50 nm, while circumventing radiation damage. Here…
View article: Ultra-high Energy Resolution EELS
Ultra-high Energy Resolution EELS Open
Journal Article Ultra-high Energy Resolution EELS Get access Niklas Dellby, Niklas Dellby Nion Co., Kirkland, Washington, United States Search for other works by this author on: Oxford Academic Google Scholar Tracy Lovejoy, Tracy Lovejoy N…
View article: Revealing Soil Organic Matter-mineral Associations with Advanced Chemical Imaging Methods
Revealing Soil Organic Matter-mineral Associations with Advanced Chemical Imaging Methods Open
Although macro-scale in nature, most biogeochemical processes are driven by interactions at the microand nano-scale. Therefore, precise characterization of both organic and inorganic system components requires multi-scale, often multi-capa…
View article: Comparison of Ptychography vs. Center-of-mass Analysis of Registered 4D-STEM Series
Comparison of Ptychography vs. Center-of-mass Analysis of Registered 4D-STEM Series Open
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
View article: Angle-Resolved Electron Energy Loss Spectroscopy
Angle-Resolved Electron Energy Loss Spectroscopy Open
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the 'Save PDF' action button.
View article: Modeling Vibrational EELS: From Bulk to Point Defects
Modeling Vibrational EELS: From Bulk to Point Defects Open
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
View article: Hybrid Pixel EELS Detector: Low Noise, High Speed, and Large Dynamic Range
Hybrid Pixel EELS Detector: Low Noise, High Speed, and Large Dynamic Range Open
Journal Article Hybrid Pixel EELS Detector: Low Noise, High Speed, and Large Dynamic Range Get access Benjamin Plotkin-Swing, Benjamin Plotkin-Swing Nion Co., Kirkland, Washington, United States Search for other works by this author on: Ox…
View article: Probing Local Vibration Modes at Single Planar Defects by Vibrational Spectroscopy
Probing Local Vibration Modes at Single Planar Defects by Vibrational Spectroscopy Open
Imperfections such as stacking faults and interfaces are recognized as decisive factors in modifying thermal properties and heat transport in crystal materials by scattering phonon and changing vibrational structure [1].However, the effect…
View article: Hybrid pixel direct detector for electron energy loss spectroscopy
Hybrid pixel direct detector for electron energy loss spectroscopy Open
We characterize a hybrid pixel direct detector and demonstrate its suitability for electron energy loss spectroscopy (EELS). The detector has a large dynamic range, narrow point spread function, detective quantum efficiency ≥ 0.8 even with…
View article: Revealing Biomineralization and SOM-Mineral Associations with Chemical Imaging Methods
Revealing Biomineralization and SOM-Mineral Associations with Chemical Imaging Methods Open
View article: Emergence of point defect states in a plasmonic crystal
Emergence of point defect states in a plasmonic crystal Open
Plasmonic crystals are well known to have band structure including a bandgap,\nenabling the control of surface plasmon propagation and confinement. The band\ndispersion relation of bulk crystals has been generally measured by\nmomentum-res…
View article: Nion Swift: Open Source Image Processing Software for Instrument Control, Data Acquisition, Organization, Visualization, and Analysis Using Python.
Nion Swift: Open Source Image Processing Software for Instrument Control, Data Acquisition, Organization, Visualization, and Analysis Using Python. Open
Advances in imaging and spectroscopy techniques have introduced the ability to generate vast amounts of data as measured in time, space, and other conditions.Spectrum imaging, for example, can generate hundreds of gigabytes in minutes and …
View article: Damage-Free Nanoscale Isotopic Analysis of Biological Materials with Vibrational Electron Spectroscopy
Damage-Free Nanoscale Isotopic Analysis of Biological Materials with Vibrational Electron Spectroscopy Open
View article: EELS in STEM: the “Swiss Army Knife” of Spectroscopy
EELS in STEM: the “Swiss Army Knife” of Spectroscopy Open
International audience
View article: Identification of site-specific isotopic labels by vibrational spectroscopy in the electron microscope
Identification of site-specific isotopic labels by vibrational spectroscopy in the electron microscope Open
Mapping isotopically labeled alanine Electron microscopy of organic materials must avoid the destructive effects of electron beam impact. One approach is to measure vibrational spectra with electron energy-loss spectroscopy in a mode where…
View article: Optimizing the Nion STEM for In-Situ Experiments
Optimizing the Nion STEM for In-Situ Experiments Open
International audience
View article: Towards topological spectroscopy in the electron microscope with atomic resolution
Towards topological spectroscopy in the electron microscope with atomic resolution Open
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
View article: Improving the STEM Spatial Resolution Limit
Improving the STEM Spatial Resolution Limit Open
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the 'Save PDF' action button.
View article: Temperature Measurement by a Nanoscale Electron Probe using Energy Gain and Loss Spectroscopy
Temperature Measurement by a Nanoscale Electron Probe using Energy Gain and Loss Spectroscopy Open
Heat dissipation in integrated nanoscale devices is a major issue that requires the development of nanoscale temperature probes. Here, we report the implementation of a method that combines electron energy gain and loss spectroscopy to pro…
View article: Vibrational Spectroscopy of Water with High Spatial Resolution
Vibrational Spectroscopy of Water with High Spatial Resolution Open
The ability to examine the vibrational spectra of liquids with nanometer spatial resolution will greatly expand the potential to study liquids and liquid interfaces. In fact, the fundamental properties of water, including complexities in i…