Materials Literature
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The high-temperature superconductor La1.84Sr0.16CuO4 is excited with high intensity terahertz pulses tuned to the 1.9-terahertz Josephson Plasma Resonance. The strong interlayer tunneling current modulates the microscopic properties of the superconductor.
In this paper, nonlinear vibration characteristics of a viscoelastic microplate under electrostatic actuation have been obtained. The microplate has been assumed as a CNT-reinforced simply supported square plate and an electrostatic actuation applied on it. The nonlinear equations of motion have been derived and solve…
Laser high-order harmonics are used to measure the optical constants of materials in the EUV. The optical constants for uranium, copper, and other metals are characterized from the measured ratio of s- vs. p-polarized reflectance.
Bismuth Titanate based electroceramics of layered perovskite structures are technologically important materials for high temperature piezoelectric and ferroelectric applications, due to their high Curie temperature (675° C), Stable piezoelectric response and excellent dielectric properties. The compounds ABi4Ti4O15 (A…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Zhenhan Yao, Lingfei Gao; A Chain Approach of BE Row‐Subdomains for Simulating the Failure Proces…
This is a review of the “40th Symposium on Electrical and Electronic Insulating Materials and Applications in Systems”, in order to overview the research trend in this specific field. Nano-composite materials, insulation systems under inverter surges, space charge assessment, asset management regarding to insulation p…
The reactor cavity cooling system (RCCS) for a very high temperature reactor (VHTR) represents a very important safety feature for achieving the defense in depth of the plant. An experimental facility was built for testing the heat transfer capability and phenomenology of this last heat sink designed for ensuring the…
This paper discusses a number of recently developed all optical and optically assisted methods for ferroelectric domain engineering in lithium niobate and their impact on the micro‐structuring of this optical ferroelectric crystal. Optical radiation is used to change the response of lithium niobate crystals to externa…
This paper reports the design of a microstructure comprising an interdigitated capacitance structure for the detection of vapor-phase analytes based on nematic liquid crystal (NLC) sensor. The NLC sensor is tested by using demethyl-methylphosphonate (DMMP) detection to change the orientational response of the liquid c…
A series of biostable polyurethane (PU) formulations, including a composite containing a biocompatible clay as filler, were prepared as new biomaterials for cardiovascular applications. Polydimethylsiloxane (PDMS) and polytetramethylenoxide (PTMO) were selected as macrodiols because of their high hydrolysis resistance…
Les contraintes environnementales poussent les chimistes a developper de nouveaux systemes generant un minimum de dechets. La mise au point de catalyseurs heterogenes bien definis permet de repondre a ces contraintes notamment par la recuperation et le recyclage du catalyseur. Alors que de nombreux systemes catalytiqu…
We investigate the influence of the effect of second‐order piezoelectricity on the pressure coefficient of the light emission (dEE/dP) in (111)‐oriented InGaAs/GaAs quantum wells (QWs). We compare the contributions originating from nonlinear piezoelectricity and nonlinear elasticity to the values of dEE/dP in these st…
The Radioactive Waste Management Directorate (RWMD) of the United Kingdom’s (UK) Nuclear Decommissioning Authority (NDA) has been given the responsibility for delivery of a Geological Disposal Facility (GDF) for the UK’s higher activity wastes in accordance with government policy. As part of this process, the RWMD has…
On the basis of qualitative analysis of the dynamical system, which consists of two coupled Landau-Lifshits equations classification of stationary states of three-layered magnetic structure is performed. It was found numerically that at some combinations of the parameters, the phase space of the system is featured wit…
Electrons in graphene behave like relativistic, Dirac Fermions. A key question is whether they are noninteracting or critically influenced by correlations. I will describe inelastic x‐ray scattering experiments on graphite, to which we have applied inversion algorithms to image screening in a graphene sheet (time reso…
Femtosecond transient grating spectroscopies probe the relaxation dynamics of the monolayer protected clusters Au24Pd(SCH2CH2Ph)18 and Au25(SCH2CH2Ph)18−. The signals reveal an ultrafast internal conversion process between excited states spatially localized to the core and semiring moieties.
The structures and electronic properties of the peanut-shaped dimers and the nanotubes consisted of C50cages are investigated using the ab initio self-consistent field molecular and crystal orbital calculations. It is found that the peanut-shaped dimers have lower energy than the dumbbell-shaped dimers. The nanotubes…
At present increasing power electronic converters are being applied in improving power quality. This paper adopts and realizes a detection method which can accurately extract harmonic or reactive currents under asymmetric or distorted supply voltage conditions for multi-target trend of power quality equipment. The PSC…
In order to study the application potential of spin transfer switching in magnetic tunnel junctions (MTJs), a synthetic parallelly coupled layered structure such as a hard CoFeB/Ru/soft NiFe layers deposited on a MgO layer is investigated. The magnetic coupling between the layers is maintained after post-annealing at…
Structural diagram of ultrasound milk flowing type disinfectant and the analysis of its operation have been introduced. The possibility of implementing the automatic frequency control mode, when using as a feedback signal of radiator current, is shown.