Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Transformations of the structure and changes in the polarization properties of polyethylene oxide are investigated in the crystallization region. It is demonstrated that the pyroelectric coefficient of this polymer is considerably higher than the corresponding parameter for polyvinylidene fluoride and is nearly equal…
Reference EPFL-CONF-159624View record in Web of Science Record created on 2010-11-30, modified on 2017-05-12
In this paper an evaluation of a number of different insulating materials, under pulse breakdown conditions, is described.The experimental setup used an 8 stage Marx generator in order to generate a high potential difference (in the range 80-220 kV) between two spherical electrodes which were spaced 1.5-3.5 mm apart.T…
OBJECTIVE: To develop a novel scaffolding method for the copolymers poly lactide-co-glycolide acid (PLGA) to construct a three-dimensional (3-D) scaffold and explore its biocompatibility through culturing Schwann cells (SCs) on it. METHODS: The 3-D scaffolds were made by means of melt spinning, extension and weaving.…
Using the numerical unrestricted Hartree–Fock approach, we study the ground state of a two-orbital model describing newly discovered FeAs-based superconductors. We observe the competition of a (0, π) mode spin-density wave and the superconductivity as the doping concentration changes. There might be a small region in…
149 Sm nuclear resonant inelastic scattering was carried out in SmB 6 in order to investigate the lattice dynamics due to Sm atoms. A sharp phonon excitation associated with Sm atoms is observed around 10 meV, suggesting the presence of a Sm dispersionless mode. The Sm phonon energy shows significant temperature depen…
Air permeability of a fabric is defined as the amount of air, passed over a surface under a certain pressure difference, in a unit time. This value has a significance with respect to the usage area. Since knitted fabrics have a loop structure, they have more pores than woven fabrics, so, in general, air permeability o…
EPRI's FALCON fuel performance code contains a fuel failure assessment capability that calculates a cumulative damage index, CDI, applicable to the PCI fuel failure mechanism. It is based on an adaptation of the cumulative damage concept coupled with a local cladding stress evaluation. The CDI is tailored specifically…
Abstract. The in uences of cupric oxide layer thickness, cuprous oxide particles and pores on the mechanical properties and microstructure of an alumina-copper eutectic bond have been investigated. The furnace atmosphere in the rst stage was argon gas with 2 10????6 atm oxygen partial pressure. In the second stage,…
The Mg-Reactive Liquid Infiltration (Mg-RLI) process allows to obtain well densified MgB2bulks by using crystalline boron powders up to 100 micron in size: natural liquid Mg percolation within the boron powders preform proceeds for depths of about 50 mm. Much less effective percolation is obtained by using micronic si…
This paper addresses adverse effects of dimensional uncertainties of an HTS insert assembled with double-pancake coils on spatial field homogeneity. Each DP coil was wound with Bi2223 tapes having dimensional tolerances larger than one order of magnitude of those accepted for LTS wires used in conventional NMR magnets…
Multifilamentary, tube-type composites consisting of subelements of Nb with a simple Cu/Sn binary metal inserts were studied in an attempt to enhance the performance boundaries of these conductors. TransportJcvalues for these multifilamentary strands were found to be as high as 2440 A/mm2at 12 T, 4.2 K for 217 strand…
We fabricated black silicon solar cells with conversion efficiency of 16.8% on p-type single crystal Si wafers with a conventional diffused emitter and Al back-surface field (BSF). We replaced the anti-reflection coating step with a single 3-minute `black-silicon' etch of the bare wafer before processing. The nanoporo…
Electrodeposition of zinc oxide layers has been carried out in simple aqueous solutions at 80°C in presence of zinc ions and dissolved oxygen. Extrinsic n type doping has been proven to be effective by anionic substitution of oxygen by chlorine, using chloride containing electrolytes. Doping level upper values up to 9…
Yttrium barium copper oxide (YBCO) film was synthesized by a metal-organic deposition (MOD) process with fluorine-free Y and Cu precursor. The precursor solution with Sm addition enabled further improvement of the thickness and uniformity of precursor films. The calcination and firing processes were studied, and the p…
Experimental tests highlight that transparent films used for thermal control in windows can be successfully adopted to obtain electromagnetic shielding in the radio frequency range. New multifunctional sandwich-structures consisting of commercial films over a glass layer are investigated. Electromagnetic, optical, and…
In this paper we report the recent advances in nanodielectrics that were developed and tested for cryogenic dielectric applications. The systems studied are composed of nanometer size particles. Particles were produced using either anex-situorin-situtechnique. It is observed that there are clear differences in the str…
This paper presents an overview of significant crystallisation results obtained with purified metallurgical grade silicon in the framework of the French Photosil project. Especially we show that in case of a high boron concentration in the feedstock (>2.1017cm-3), the higher the compensation level is, the higher the s…
We report on miniaturized diaphragm dielectric elastomer actuators (DEAs) capable of vertical displacement up to 25% of their diameter. Low-energy metal ion implantation was used to create patternable and compliant gold electrodes on both sides of suspended 30 mum thick silicone (PDMS) membranes. This technique enable…
We present novel light trapping designs applied to thin (5 micron) silicon solar cells. The design structures incorporate diffractive gratings to increase the optical path length of light within the solar cells. We incorporate a combination of dielectric and metallic materials to create the gratings. We form a one dim…