Materials Literature
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We propose a design methodology for systematic design of surface relief transmission gratings with optimized diffraction efficiency. The methodology is based on a gradient-based topology optimization formulation along with 2D frequency domain finite element simulations for TE and TM polarized plane waves. The goal of…
GeO2 transparent glass ceramic planar waveguides were fabricated by a RF-sputtering technique and then irradiated by a pulsed CO2 laser. Different techniques like m-line, micro-Raman spectroscopy, atomic force microscopy, and positronbannihilation spectroscopy were employed to evaluate the effects of CO2 laser process…
A family of mixed Cp–amidinate rare-earth-metal(III) complexes [Cp 2 L 1 LnPhCN] (Ln = Y ( 1 ), La ( 2 ), Sm ( 3 ), Eu ( 4 ), Gd ( 5 ), Tb ( 6 ), Dy ( 7 ); L 1 = PhC(NSiMe 3 ) 2 ), [Cp 2 L 1 Ln] (Ln = Er ( 8 ), Yb ( 9 )), and [Cp 2 L 2 Ln] (Ln = Y ( 10 ), Eu ( 11 ), Gd ( 12 ), Tb ( 13 ), Dy ( 14 ), Er ( 15 ); L 2 = N(…
In this work, the combination of Conventional Dark Field (CDF), Energy Filtered (EF), and High Resolution (HR) Transmission Electron Microscopy (TEM) enabled fine scale characterization of the precipitate microstructures in type 316 Stainless Steel (SS). This steel was irradiated beforehand in the Phénix fast reactor…
We have studied the photodarkening effect in fiber preforms with an ytterbium-doped aluminosilicate glass core. The room-temperature stable Yb2+ ions formation in the glass matrix under both UV- and NIR-pumping irradiation was revealed by the method of absorption spectra analysis and the fluorescence spectroscopy tech…
Several papers were reported on spectroscopic properties of rare earth doped different host glasses. A complete knowledge of fluorescence properties of rare earth ions in laser materials is necessary to achieve efficient, compact and cheap sources of laser radiation for NIR and mid-IR region. Tellurite glasses are pot…
We investigate the interactions of generation 3 (G3) poly(amidoamine) (PAMAM) and G3 poly(propylenimine) (PPI) dendrimers with sodium dodecyl sulfate (SDS) in aqueous solution. Size and structure of the dendrimer-SDS aggregates as a function of SDS/dendrimer molar ratio were revealed by SAXS and NMR. G3 PAMAM has a re…
ABSTRACT Sophorolipids (SL; microbial glycolipids) were used as additives in solvent‐cast short‐chain polyhydroxyalkanoate (sc‐PHA) films to enhance surface roughness and porosity. Poly‐3‐hydroxybutyrate (PHB), poly‐(6%)‐3‐hydroxybutyrate‐co‐(94%)‐3‐hydroxyvalerate (PHB/V), and poly‐(90%)‐3‐hydroxybutyrate‐co‐(10%)‐3‐…
Multi-cation oxides with crystalline perfection known from single crystals of Si or Ge are a challenge not only for basic research but also towards a revolution of oxide electronic materials. Here, we present our approach for the synthesis of high-quality thin films of multi-cation oxides. We show that our synthesis m…
The development of organic polymers with high refractive indices has been widely investigated, as a possible alternative to inorganic metal oxide, semiconductor, or chalcogenide-based materials for a variety of optical devices and components, such as waveguides, anti-reflective coatings, charge-coupled devices and fib…
Brominated flame-retardant high-density polyethylene (HDPE) composites containing graphene nanoplatelets (GNPs) were prepared via melt blending. A Lewis acid catalyst, aluminum chloride (AlCl 3 ), was adopted to initiate the Friedel–Crafts reaction, which contributed to the good dispersion of GNPs and improvement of i…
New metrological facilities for high temperature measurements of thermophysical properties have been recently developed by European National Metrology Institutes (NMIs). This work, performed in the framework of the joint research project “MetroFission”, aims to provide reliable measurements up to 2000 for materials ha…
A new thin film nanofibrous composite (TFNC) membrane for Cr (VI) removal was prepared by layer‐by‐layer assembly of chitosan/alginate on the surface of the electrospinning nanofibrous substrates. Scanning electron microscopy and static contact angle measurement were applied to characterize surface morphology and hydr…
We demonstrate the fabrication of an all-carbon electrode by plasma-enhanced chemical vapor deposition for use in flexible electrochemical applications. The electrode is composed of vertically aligned carbon nanotubes that are grown directly on a flexible graphite foil. Being all-carbon, the simple fabrication process…
First-principles calculations were carried out to investigate the structure, phase stability, electronic property, and roles of metallicity in the hardness for recently synthesized FeB4 with various different structures. Our calculation indicates that the orthorhombic phase with Pnnm symmetry is the most energetically…
The purpose of this paper is to discuss the role of multiwalled carbon nanotube in the swelling of polyacrylamide–multiwalled carbon nanotube composites. Swelling experiments were performed in water at various temperatures by real-time monitoring of the decrease in pyranine (Py) and emission light intensity ( I em ).…
We report the phase diagram of NdO 1− x F x BiS 2 ( x = 0.1, 0.3, 0.5, 0.7, 0.9) compound. The samples synthesized by the vacuum encapsulation technique are crystallized in a tetragonal P 4/ nmm space group. The superconductivity of all samples is confirmed by dc magnetic susceptibility and electrical transport measur…
Ga2O3 bulk single crystals have been implanted with 300 keV Europium ions to fluences ranging from 1×1013 to 4×1015 at/cm2. The damage build-up and Eu-incorporation was assessed by Rutherford Backscattering Spectrometry in the channeling mode (RBS/C). RBS/C results suggest that implantation causes a mixture of defect…
The nature of the magnetic interaction through fluoride in a simple, dinuclear manganese(III) complex (1), bridged by a single fluoride ion in a perfectly linear fashion, is established by experiment and density functional theory. The magnitude of the antiferromagnetic exchange interaction and the manganese(III) zero-…
High quality w-MgxZn1-xO thin films were grown epitaxially on c-plane sapphire substrates by plasma-assisted Molecular Beam Epitaxy. ZnO thin films with high crystalline quality, low defect and dislocation densities, and subnanometer surface roughness were achieved by applying a low temperature nucleation layer. By tu…