Combination of Different Techniques in Cryo-Electron Tomography with a Volta Phase Plate
Maryam Khoshouei, Gunther Gerisch, Maria Ecke, Julio Ortiz, Jiirgen M Plitzko, Radostin Danev, Wolfgang Baumeister; Combination of Different Techniques in
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Challenges for ABF-STEM characterization of Li battery materials
Barnaby DA Levin, David A Muller; Challenges for ABF-STEM characterization of Li battery materials, Microscopy and Microanalysis, Volume 21, Issue S3, 1 Au
Calculation of Reaction Cross Sections for Producing Br-75 in the Energy Range of 5-40 MeV
The isotope of bromine, 75 Br (T 1/2 = 1.6 h), has a considerable interest in nuclear medicine. The radionuclide 75 Br is a positron emitter and is useful in positron emission tomography (PET) for fast metabolic processes. In this study the reaction cross sections were calculated for suggested various production mecha…
Temperature effect on insulation resistance of generator stator bar affected by water ingress
For water-cooled stator bar of power generator, leaks of water at the copper strand brazing location will reduce dramatically its insulation resistance. Therefore, the insulation resistance measurement is an important and simple test to perform in the periodic maintenance program. The temperature has an important effe…
24‐wavelength distributed Bragg reflector laser array with surface gratings
A small footprint diode laser array of 24 individually addressable distributed Bragg reflector lasers is presented. Third‐order gratings etched into the surface of an AlGaAs vertical waveguide structure act as Bragg reflectors. The ridge waveguides have an 87 µm‐wide spacing and the emission wavelengths are spread on…
Response Due To Impulsive Force In Generalized Thermomicrostretch Elastic Solid
A two dimensional Cartesian model of a generalized thermo-microstretch elastic solid subjected to impulsive force has been studied. The eigen value approach is employed after applying the Laplace and Fourier transforms on the field equations for L-S and G-L model of the plain strain problem. The integral transforms ha…
Extended x-ray absorption fine structure study of MnFeP 0.56 Si 0.44 compound
The MnFeP 0.56 Si 0.44 compound is investigated by x-ray diffraction, magnetic measurements, and x-ray absorption fine structure spectroscopy. It crystallizes in Fe 2 P-type structure with the lattice parameters a = b = 5.9823(0) Å and c = 3.4551(1) Å and undergoes a first-order phase transition at the Curie temperatu…
Mechanical and Thermal Properties of Silane Treated Pineapple Leaf Fiber Reinforced Polylactic Acid Composites
In this work, the mechanical and thermal properties of pineapple leaf fiber (PALF)/poly (lactic acid) (PLA) composites were studied. Pineapple leaf fibers were pretreated with 4 %wt sodium hydroxide solution followed by various silane solutions i.e. γ-(aminopropyl) trimethoxy silane (APS), γ-methacrylate propyl trimet…
Morphology and Mechanical Properties of Polyoxymethylene and Acrylonitrile-Butadiene-Styrene Blends with Compatibilizer
The effects of polypropylene-graft-maleic anhydride (PP-g-MA) compatibilizers on the morphology and mechanical properties of polyoxymethylene (POM)/acrylonitrile-butadiene-styrene (ABS) blends were investigated. Two types of compatibilizers, PP-g-MA with maleic anhydride 0.50 wt% (PP-g-MA1) and PP-g-MA with maleic anh…
Growth and UV Absorption of 5 mol% Zn-Doped CeO2 Nanoparticle Synthesized with a Simple Precipitation Process
Nanoparticles of the 5 mol% Zn-doped CeO2 have been synthesized by simple precipitation process from aqueous/alcoholic solution of cerium nitrate and zinc nitrate mixture at room temperature. Dried precipitates were calcined at 300-700°C for 2 hours. The structure and growth of 5 mol% Zn-doped CeO2 was investigated us…
Techniques of SrAl12O19 Platelets Formation in ZTA
A possibility of the SrAl12O19platelet formation in the Al2O3– ZrO2ceramic using SrCO3or Sr3Al2O6is evaluated. An impact of two techniques of platelet synthesis on mechanical properties of the material is investigated. Defects revealed in the sintered ceramic material are analyzed. Recommendations on the best method o…
Delamination Resistance of Laminates with Various Stacking Sequences against Low Velocity Impacts
Effects of low-velocity-low-energy impacts on interlaminar damage extent in Glass/Epoxy laminate panels of [0°/90°]10, [0°10/90°10], [0°5/90°5]2, [0°5/-45°5/90°5/+45°5] layups were experimentally investigated. The tests were carried out at room temperature with the help of INSTRON CEAST9350 impact system. The initial…
Raman Studies of Amorphous Carbon Phase in Diamond Films Grown by Hot-Filament CVD
Microcrystalline diamond thin films have been prepared using hot filament CVD technique with a mixture of H2/ CH3OH as the reactant gas. We demonstrated that the ratio of H2/ CH3OH in the reactant gas and total pressure in reactor chamber plays an important role in control of the grain size of diamonds and the growth…
Numerical Simulation on the Laser Induced Oxygen Spark under Different Ambient Conditions
As a new type of ignition technique, laser induced spark ignition can be widely used in the ignition system of internal combustion engines and aero-engines. In this paper, laser induced oxygen spark evolution has been numerically studied with a two-dimensional, unsteady, multi-components and time-accurate model under…
Characterization of Elastic Strain Field and Geometrically Necessary Dislocation Distribution in Stress Corrosion Cracking of 316 Stainless Steels by Transmission Kikuchi Diffraction
Arantxa Vilalta-Clemente, Martina Meisnar, Sergio Lozano-Perez, Angus J Wilkinson; Characterization of Elastic Strain Field and Geometrically Necessary Dis
Characteristics of a field plate connected to T-shaped gate in AlGaN/GaN HEMTs
An AlGaN/GaN high electron mobility transistor (HEMT) with a T-shaped gate employing a gate-foot-connected field plate is presented. Similar to other devices with gate connected field plates the device described in this paper is a variation of the Γ-shaped gate with the “head” of the Tshaped gate attached at the top.…
Inside Back Cover: Effect of Adding CeO2 to RuO2–IrO2 Mixed Nanocatalysts: Activity towards the Oxygen Evolution Reaction and Stability in Acidic Media (ChemElectroChem 8/2015)
Stable trimetallic Ru–Ir–Ce mixed oxides are prepared through a co-precipitation route in ethanol medium. Their efficiency towards water splitting to produce O2 is demonstrated. The addition of cerium as a third metal enables a decrease in precious-metal content without reducing the effectiveness of the catalysts. Mor…
Enhancement of Mechanical Properties of Photo‐Responsive Polymers
Summary Photomechanical polymers are characterised by changes in their mechanical properties under light radiation. This process is driven by the reversible isomerisation of chromophores in a polymer matrix. Azobenzene‐based materials can switch their isomeric structure from trans to cis by light of appropriate wavele…
Ultrafast THz modulation characteristics of photo-induced metal-insulator transition of W-doped VO2 film
The ultrafast terahertz modulation characteristic during photoinduced metal-insulator transition (MIT) of W-doped VO2 film was investigated at picoseconds time scale using time-resolved terahertz spectroscopy. The phase transition dynamic process was dramatically suppressed in W-doped VO2 film, which could be ascribed…
Room-temperature remote sensing: Far-infrared imaging based on thermopile technology
This work presents recent advances on room-temperature far-infrared thermopile detectors. The focal plane arrays micromachined at JPL are integrated with dedicated radiation-hardened read-out circuit chips to provide remote sensing under high radiation conditions environments.