Materials Literature
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We present a novel hydrogen sensor that is based on large arrays of chemically actuated electromechanical nanoswitches, realized by nanogaps in palladium (Pd). An individual switch consists of a trimorph poly-Si/Ti/Pd structure and a fixed Ti/Pd electrode, separated by an approximately 10-15 nm wide nanogap. The volum…
A new kind of triphenylene derivative sym-(OC3H6OCOC2H4COOH)6 with triphenylene at the core and carboxyl groups at the peripheral chains was synthesized and characterized by FT-IR and 1H-NMR. Thermal gravimetry analysis (TGA) and differential scanning calorimetry (DSC) showed that these compounds have a good thermal s…
Higher contamination flashover voltage of a semi-conducting glaze (SG) insulator owes primarily to the drying effect by leakage current flowing in the glaze. Significant reduction in contamination flashover voltage was confirmed on a cylindrical SG insulator when fog density was increased from 0.5g/m3 to 13g/m3 in cle…
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 K. Nishio, H. Ikezoe, S. Mitsuoka, I. Nishinaka, H. Makii, Y. Watanabe, Y. Nagame, T. Ohtsuki, K.…
We have investigated resonant nanocavities coupled to photonic crystal waveguides for biosensing. The devices are fabricated using electron beam lithography and reactive-ion-etching. Preliminary results demonstrate successful detection of human IgG molecules and refractive index sensing.
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…