A5050339447- Advanced Materials Characterization Techniques
- Fusion materials and technologies
- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Materials and Properties
- Nuclear Physics and Applications
- Health Education and Validation
- Electronic and Structural Properties of Oxides
- Microfluidic and Capillary Electrophoresis Applications
- Youth, Drugs, and Violence
- Health, Nursing, Elderly Care
- Diamond and Carbon-based Materials Research
- Various Chemistry Research Topics
- Microfluidic and Bio-sensing Technologies
National Nuclear Laboratory
2024
Sellafield (United Kingdom)
2024
West Virginia University
2023
University of Oxford
2021-2022
Abstract As hydrogen is touted as a key player in the decarbonization of modern society, it critical to enable quantitative (H) analysis at high spatial resolution and, if possible, atomic scale. H has known deleterious impact on mechanical properties (strength, ductility, toughness) most materials that can hinder their use part infrastructure hydrogen-based economy. Enabling mapping including local concentration analyses specific microstructural features essential for understanding multiple...
Abstract We investigated a new method for estimating specimen hydrogen content in atom probe tomography (APT) experiments where molecular ions () originating from the measurement environment can overlap with deuterium (D+) mass-to-charge-state spectrum, thus preventing direct application of isotopic marking unambiguous analysis. First, we applied an existing estimation, using ratios obtained paired deuterated/nondeuterated experiments. These measurements demonstrated sufficient residual...
Abstract Zirconium alloys are common fuel claddings in nuclear fission reactors and susceptible to the effects of hydrogen embrittlement. There is a need be able detect image at atomic scale gain experimental evidence necessary fully understand Through use deuterium tracers, atom probe tomography (APT) spatially locate scale. Previous works have highlighted issues with quantifying concentrations using APT due complex peak overlaps mass-to-charge-state ratio spectrum between molecular (H2 D)....
Passivated contact cell architectures have the potential for higher efficiencies than currently dominant PERC technology. Further development requires greater understanding of passivation mechanism and surface related degradation, especially at polysilicon-oxide-crystalline silicon contacts. In particular, hydrogenation provided by high temperature firing dielectrics has been shown to govern both initial subsequent degradation this interface. Given nanoscale dimensions tunnelling oxide,...
Electrophoresis is integral to analytical and biochemistry experiences in undergraduate education; however, fundamental principles of the method are often taught upper-level laboratories through hands-on experiences. A laboratory activity reported that teaches concepts electrophoretic mobility electroosmotic flow. single reuseable instrument, called a mini-E, costs 37 USD consists DC power supply, voltmeter, platinum electrodes, chip cast polydimethylsiloxane. This uses common reagents...
As hydrogen is touted as a key player in the decarbonization of modern society, it critical to enable quantitative H analysis at high spatial resolution, if possible atomic scale. Indeed, has known deleterious impact on mechanical properties (strength, ductility, toughness) most materials that can hinder their use part infrastructure hydrogen-based economy. Enabling mapping, including local concentration analyses specific microstructural features, essential for understanding multiple ways...
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Journal Article Preliminary Atom Probe Tomography Evidence for Hydrogen Trapping at a β-Nb Second Phase Particle in Neutron-irradiated Zirconium Alloy Get access Benjamin M Jenkins, Jenkins Department of Materials, University Oxford, Parks Road, UK Corresponding author: benjamin.jenkins@materials.ox.ac.uk Search other works by this author on: Oxford Academic Google Scholar Jack Haley, Haley UKUKAEA, Culham Science Centre, Abingdon, Oxfordshire, Martin Meier, Meier Megan E Jones, Jones...
Journal Article Cryogenic Focused Ion Beam Sample Preparation for the Analysis of Hydrogen in Zr Alloy APT Experiments Get access Megan Jones, Jones Department Materials, University Oxford, UK Corresponding author: megan.jones2@materials.ox.ac.uk Search other works by this author on: Oxford Academic Google Scholar Christopher Parmenter, Parmenter Nottingham Nanotechnology and Nanoscience Centre, Nottingham, Benjamin Jenkins, Jenkins Paul Styman, Styman National Nuclear Laboratory, Culham,...
Objetivo: Descrever o processo de adaptação cultural do StayingFit ao contexto adolescentes brasileiros e testar a usabilidade da versão adaptada. Métodos: O incluiu tradução material (dois tradutores separados), síntese das versões traduzidas, criação painel especialistas para revisão original traduzida pré-teste A programa foi testada por meio escala sistema (SUS). Resultados: Mudanças foram realizadas no compatibilizá-lo aos padrões, significados valores culturais dos brasileiros, não...