Materials Literature
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Abstract The strain hardening behavior of model polymer glasses is studied with simulations over a wide range of entanglement densities, temperatures, strain rates, and chain lengths. Entangled polymers deform affinely at scales larger than the entanglement length as assumed in entropic network models of strain harden…
This book presents a broad collection of models and computational methods - from atomistic to continuum - applied to crystal dislocations. Its purpose is to help students and researchers in computational materials sciences to acquire practical knowledge of relevant simulation methods. Because their behavior spans mult…
Carbon Nanotubes research is one of the top five hot research topics in physics. It is because of its unique properties and functionalities, which leads to wide-range applications. One of the most interesting potential applications is in term of nanoelectronic device. There is a possibility to found some unique struct…
We propose a simple method for measuring the twist angle of a nematic liquid crystal cell, which is the combination of a transmission method and a reflection method. Our method is an improved “rotation polarizer method” that is not confined by the condition of the liquid crystal phase retardation of Δ n d /λ, where Δ…
Abstract Ba x Ce 0.8 Tb 0.2 O 3− α ( x =0.98–1.03) solid electrolytes were synthesized and characterized by using X‐ray diffraction (XRD). By using AC impedance spectroscopy and gas concentration cell electromotive force (EMF) measurements, the electrical conduction behavior of the specimens was investigated in differ…
Lanthanum beta alumina powders were obtained by the polymeric precursor technique using lanthanum nitrate, aluminum nitrate, ethylene glycol and citric acid. The transformations that occur during thermal treatment of the precursor solution were evaluated by thermogravimetric and differential thermal analysis. Fourier…
X-ray diffraction data from a binary mixture of two isomeric nonpolar bicyclohexane compounds containing alkenyl side chains have been analyzed to determine the bond orientational order (BOO), orientational order parameters (OOP), layer thickness (in Smectic B phase), apparent molecular length (in nematic phase), and…
We report on the strongly anisotropic thermal expansion (TE) and magnetostriction (MS) of a GdRu2Si2single crystal measured along the principal crystallographic directions (the a- and c-axis, respectively) down to 2K and magnetic fields up to 14T. The MS (positive along the c-axis and negative in the perpendicular dir…
We report electrochromic and electrochemical properties of a WO 3 -Ta 2 O 5 nanocomposite electrode that was fabricated from co-sputtering. Transmission electron microscopy (TEM)images of the WO 3 -Ta 2 O 5 nanocomposite electrode revealed that morphology of the WO 3 film was changed by incorporation of Ta 2 O 5 nanop…
This article addresses some issues and solutions for ballistic impact computations. A discussion of the strengths and weaknesses of existing computational techniques is presented, and this is followed by a description of a new computational technique that is well-suited for ballistic impact computations. This new appr…
Gold nanoparticles (Au NPs) have been attracting more attention because they have many color varieties in the visible region based on plasmon resonance, which is due to the collective oscillation of the electrons at the surface of the nanoparticles. We prepared 6 nm Au NPs to modify the surface of the glass substrate.…
The multilayer PbTiO3/PbZr0.3Ti0.7O3/PbTiO3(PT/PZT/PT) thin films were prepared by a Sol-Gel method on the Pt(111)/Ti/SiO2/Si(100) substrate for FeRAM application. The XRD patterns exhibits a perfect perovskite-phase with strong (111)-preferred orientation. The domain structures were investigated by scanning force mic…
Dense lead free ceramics with composition of (K0.5Na0.5)0.96Sr0.02Nb1-x MnxO3 (x = 0,0.01,0.02,0.03,0.04) were successfully prepared by conventional mixed oxide method, and their dielectric and piezoelectric properties have been investigated. The X-ray diffraction patterns indicated phase transition from peroveskite s…
Low-dielectric-constant amorphous fluorinated carbon (a-C:F) films were prepared using plasma-enhanced chemical vapor deposition (PECVD) from C 4 F 6 (hexafluoro-1,3-butadiene) gas, which is expected to be a substitutional gas owing to its low global warming potential (GWP). Kinetic analysis revealed that the density…
International Laboratory of High Magnetic Fields and Low Temperatures, Wroclaw, Poland is financed by the Bulgarian Academy of Sciences, National Academy of Sciences of Ukraine, Polish Academy of Sciences and Russian Academy of Sciences as the main contributors. But the scientists from Germany, UK and other countries…
The magnetic and magnetoelastic properties of single crystals of electron-doped rare-earth manganites La1−x Sr x MnO3 are studied. Phase transitions from the A-type antiferromagnetic phase to the C-type anti-ferromagnetic phase in a strong magnetic field are revealed in La1−x Sr x MnO3 manganites with a strontium cont…
We report the Raman, continuous-wave (CW), and time-resolved photoluminescence (PL) measurements in a series of multilayer Si/Si1-xGexsamples with an island-like morphology and precise control over the chemical composition in the range of 0.096 les x les 0.61. In the samples with x continuously increasing from 0.096 t…
Sr2-xBaxBi4Ti5O18 (SBBTi-x,x = 0∼2.0) ceramic samples were prepared by using the standard solid-state reaction method and their crystal structure, ferroelectric and dielectric properties were examined. The results show that the lattice constants increase with barium content. The remnant polarization (2P r ) and the co…
Concrete walls play the role not only of the structural material but also of the final barrier of a multiconfinement system of tritium in a fusion reactor or a tritium-handling facility. Therefore, it is required that the behavior of tritium in the concrete materials be clarified to certify the radiation safety of a f…
The processing of SmCo5 sintered magnets involves a post-sintering heat treatment, where the intrinsic coercivity of the magnets may increase more than one order of magnitude. Variables of the heat treatment like time, temperature and cooling rate have strong influence on coercivity. We describe a method for modeling…