Materials Literature
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We demonstrate coherent multiphoton imaging of PbS colloidal quantum dots based on the detection of their transient resonant four-wave-mixing (FWM) emission under 150 fs pulsed laser excitation. Background-free imaging of PbS quantum dots in resonance with their ground-state excitonic absorption at $1.2\text{ }\ensure…
Most materials, produced either in nature or in factories, possess hierarchical structures, and understanding the role which hierarchy plays in their mechanical and physical behavior is a fundamental issue. The conventional scaling law established for porous materials with relatively larger characteristic sizes of mic…
We study the phonon-induced relaxation dynamics in the heterometallic ${\text{Cr}}_{7}\text{Ni}$ ring. By assuming that spin-phonon coupling occurs through the modulation of local crystal fields, we investigate the decay of time correlations of molecular observables, such as fluctuations of the cluster magnetization.…
We investigate the shear-induced diffusion of concentrated non-colloidal suspensions in a Couette flow. The channel is divided into four zones based on the suspension microstructure and variances of the wall-normal and spanwise displacements for the particles in each zone. Due to the strong spatial coherency induced b…
Recycled PET is an important resource of waste, which reused with polar or crystallization polymers, such as PC, PA and PE, by melting blend method have been well studied. But the study of rPET blend with nonpolar and amorphous polymer is still inadequate. In the present work, nano-SiO2 particles were introduced to re…
Abstract Novel alternating copolymers comprising bis‐ calix[4]arene‐ p ‐phenylene ethynylene and m ‐phenylene ethynylene units ( CALIX‐ m ‐PPE ) were synthesized using the Sonogashira‐Hagihara cross‐coupling polymerization. Good isolated yields (60–80%) were achieved for the polymers that show M n ranging from 1.4 × 1…
The processing by reactive extrusion method of composites based on virgin polypropylene and its recyclates filled with fibers of jute, sisal, hemp or cottonized flax has been presented (Tables 1 and 2). The influence of the addition of three different compatibilizers and fiber alkalization on the properties of the obt…
The FUSTIN dedicated computer code has been developed to predict the transient response of pool-type fast reactor components in a core disruptive accident. FUSTIN accurately simulates several complex phenomena, such as large distortions in the fluids, large displacements of the structure, fast transient fluid-structur…
Six laboratories in Japan have performed round-robin test (RRT) on measurement of repetitive PD inception voltage (RPDIV) under well-controlled experimental condition. They used common twisted-pair sample, common impulse generator and common data sheet with normalized air pressure and temperature. Scatterings of data…
Reliable in-core instrumentation has been developed for measuring all key parameters for fuel studies such as fission gas release, fuel temperature, fuel swelling, cladding creep, etc. Improvements of the linear variable displacement transducer (LVDT), the diameter gauge and the pressure sensor are detailed in this ar…
This is a study of the components of capacitance, loss and harmonic currents that the nonlinear 'corona protection' coating used on stator end-windings adds to frequency-domain dielectric measurements. The work is based on measurements on simple laboratory models, compared to one-dimensional numerical models having di…
Beta titanium alloys parts are used on advanced aerospace systems because of their high strength to weight ratio and excellent corrosion resistance. Production of powder metallurgy titanium alloys components may lead to a substantial reduction in the cost, compared to those produced by conventional cast and wrought pr…
The crystallization kinetics of laser-annealed Lamodified Pb(Zr,Ti)O₃ (PLZT) thin films on LaNiO₃-coated silicon substrates were investigated for substrate temperatures below 400 °C. A KrF excimer laser having a ~20 ns pulse width and an energy density ~40 mJ/cm² was used to crystallize the films. The perovskite phase…
Effect of cryogenic treatments on mechanical properties of 2A11 aluminum alloy were studied. Cryogenic box with program control and electrical resistance furnace were employed to perform cryogenic treatment processes as well as heat treatment processes. Impact tester, tensile tester, three-coordinates measuring machin…
Silk fibroin/cellulose acetate blend Nanofibrous membranes were prepared by electro- spinning and their performances were evaluated as a heavy metal ion adsorbent. The electrospun nanofibrous membranes were comprised of randomly oriented ultra-fine fibers of 100-600nm diameters. As a result of field emission electron…
Nanotechnology is going to change our lives in many different ways since its applications span from electronics to medical treatments. However, great concerns about nanomaterials' hazardous effects on the environment and human health are increasing as nanotechnology flourishes. Besides the benefits promoted by intenti…
This paper reports on the magnetic properties of Zn1−xMnxO with Mn concentrations from 5% to 25%. The polycrystalline films, deposited by pulsed laser deposition on c-oriented sapphire and mica substrates, were first characterized by x-ray diffraction, absorption, and fluorescence, as well as by photoelectron and opti…
Homologue series exhibiting the SmA* and SmC* phases have been studied and the tendency to de Vries behaviour has been described for compounds with decreasing length of non-chiral chain. Dielectric spectroscopy has been performed with the aim to characterize dielectric properties and compare different homologue compou…
Abstract Up to now materials were chosen to satisfy specific property(ies) in relation with the required application. Nowadays, a specific attention has to be devoted to the durability of this property regarding to the lifetime duration. It is the reason why, we paid attention about degradability. Thus, a screening of…
The selective reaction of CO oxidation (PROX) was named as the most attractive way to reduce the CO concentration, thereby purifying the hydrogen. The aim of this work is to make the structural and morphologic characterization of the NiFe2O4 spinel synthesized by combustion reaction, using glycine as fuel, and to eval…