Materials Characterization & Imaging – Page 8

Microscopic Identification of Micro-Fractures and Deterioration In Arid Environments Of Pro-Oxidant Polyethylene (PE) Specimens Utilizing State of The Art Thermal and Morphological Experimental Protocols

Al-Salem S.M., Al-Hazza A.A., Al-Rowaih A.A., Al-Dhafeeri A.T., Kuwait Institute for Scientific Research, KW

Pro-oxidant filled polyethylene (PE) specimens in standard and internationally accepted dimensions and size, were exposed to arid natural and accelerated weathering conditions. The American Society for Testing and Materials (ASTM) protocols for weathering were followed, [...]

A Programmable Transmission Electron Detector for Nanomaterials Characterization in a Scanning Electron Microscope

Holm J., Caplins B., Keller R., National Institute of Standards and Technology, US

A new programmable detector for scanning transmission electron microscopy (p-STEM) is described. A digital micromirror array lies at the heart of the detector and serves as a programmable virtual objective aperture. Two sensors, a photomultiplier [...]

Determining Elastic-Plastic Material Properties Using Instrumented Indentation Test and Finite Element Simulation

Promer D.R., Najafabadi Z.S., Kim J., Kujawski D., Western Michigan University, US

A new technique that can determine the elastic-plastic properties of metallic materials using the instrumented indentation test and finite element simulation is developed. This non-destructive technique can be applied to additively manufactured and/or surface treated [...]

Curvature Change Analysis of SMART Fibers used for Temperature Adaptive Insulation

Latulippe A., Ripa C., Sun H., Fossey S., Drew C., University of Massachusetts-Lowell, US

A thermally adaptive insulation has previously been developed by the US Army. The insulation is designed to expand at lower temperatures and shrink at higher temperatures. This is accomplished using multi-component polymer fibers that are [...]

Characterization of Magnesium Silicide Stannide Powder for use in Selective Laser Melting

Gray R., LeBlanc S., The LeBlanc Lab, US

This study examines magnesium silicide stannide (Mg2Si0.4Sn0.6) powder, a thermoelectric material optimal for high temperature applications. Powder morphology and particle size distribution were analyzed through optical microscopy and the image analysis software FIJI. The ability [...]

Advanced Materials

Effects of Ca doping on Grain and Grain Boundary Properties of ZnO-Zn2BiVO6-Co3O4 Ceramics using Dielectric Functions for Surge Arrestor

Hong Y.W., Ha M.J., Paik J.H., Cho J-H., Jeong Y.H., Yun J.S., Park W.I., Korea Institute of Ceramic Engineering & Technology, KR

Polycrystalline ZnO has been applied to various electrical and optical applications such as gas sensors, piezoelectric transducers, phosphors, transparent conducting films, and varistors. To control the figure of merits of these devices it is essential [...]

Spectroscopic Diagnostics And Material Characterization For Wave Liquefaction™ Processing Of Carbon Materials For The Production Of Value-Added Chemicals And Feedstocks

Vander Wal R., Sengupta A., Musselman E., Zeller K., Skoptsov G., Penn State University, US

1. Optical Diagnostics for Advanced CTL and and GTL Processes H Quest Vanguard is developing broad-spectrum microwave plasma processes targeting conversion of hydrocarbon feedstocks such as coal and natural gas to value-added materials, chemicals and [...]

The developments of a Helium Acoustic Levitation Environment for time resolved XFEL experiments

Dye E.R., Morris R.H., Newton M.I., Axford D., Aller P., Orville A.M., Docker P.T., Nottingham Trent University, UK

The study of proteins using X-ray diffraction either with synchrotrons or X-ray Free Electron Lasers (XFELS) has become ubiquitous. Of growing interest within the protein crystallographer community is the study of proteins as they interact [...]

Magnetometry Measurements of Nanomagnetic Materials

Dodrill B.C., Lake Shore Cryotronics, US

Magnetometers are used to characterize magnetic material properties. Magnetometry techniques can be broadly classified into two categories: inductive and force-based. The two most commonly used inductive techniques are vibrating sample (VSM) and superconducting quantum interference [...]