168 research outputs found
Integrated analysis of hydrogen embrittlement mechanisms of a steel from its mechanical behaviours and atom probe tomography
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Networking strategies of the microscopy community for improved utilisation of advanced instruments: (1) The Australian Microscopy and Microanalysis Research Facility (AMMRF)
Unabridged phase diagram for single-phased FeSexTe1-x thin films
A complete phase diagram and its corresponding physical properties are
essential prerequisites to understand the underlying mechanism of iron based
superconductivity. For the structurally simplest 11 (FeSeTe) system, earlier
attempts using bulk samples have not been able to do so due to the fabrication
difficulties. Here, thin FeSexTe1-x films with the Se content covering the full
range were fabricated by using pulsed laser deposition method. Crystal
structure analysis shows that all films retain the tetragonal structure in room
temperature. Significantly, the highest superconducting transition temperature
(TC = 20 K) occurs in the newly discovered domain, 0.6 - 0.8. The single-phased
superconducting dome for the full Se doping range is the first of its kind in
iron chalcogenide superconductors. Our results present a new avenue to explore
novel physics as well as to optimize superconductors
Clustering and Precipitation Processes in Microalloyed Aluminium Alloys(APFIM/FIM)
Recent progress in understanding the origins of hardening in Al-1.7Cu-0.01Sn (at. %) and Al-1.1Cu-1.7Mg-(0.1Ag, 0.3-0.5Si) (at. %) microalloyed alloys is presented. The results of systematic studies involving atom probe field ion microscopy in conjunction with transmission electron microscopy indicate that the precipitation processes depend to a considerable degree upon the nature of pre-precipitate clustering reactions which occur early in the decomposition of the solid solution. Furthermore, it is shown that the presence of these co-clusters can influence significantly the alloy properties
A Review on Electronic Transport Properties of Individual Conducting Polymer Nanotubes and Nanowires
In Vitro Studies of Cells Grown on the Superconductor PrOxFeAs
The recent discovery of arsenic-based high temperature superconductors has
reignited interest in the study of superconductor : biological interfaces.
However, the new superconductor materials involve the chemistry of arsenic,
their toxicity remain unclear [ Nature, 2008, 452(24):922]. In this study the
possible adverse effects of this new family of superconductors on cells have
been examined. Cell culture studies in conjunction with microscopy and
viability assays were employed to examine the influence of arsenic-based
superconductor PrOxFeAs (x=0.75) material in vitro. Imaging data revealed that
cells were well adhered and spread on the surface of the superconductor.
Furthermore, cytotoxicity studies showed that cells were unaffected during the
time-course of the experiments, providing support for the biocompatibility
aspects of PrOxFeAs-based superconductor material.Comment: Are the FeAs based superconductors toxic
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