Materials Literature
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The finite-difference method to calculate hyperpolarizabilities is generalized for dynamical case. The calculation of the dynamical hyperpolarizabilities from non-perturbative, explicitly time-dependent single particle states obtained in the framework of the time-dependent density functional theory, is implemented in…
Magnetic property of interacting spin trimer systems is studied theoretically focussing on (C 5 H 11 NO 2 ) 2 ·3CuCl 2 ·2H 2 O as a typical example, where the trimer is composed of three S =1/2 spins. It is reported that (C 5 H 11 NO 2 ) 2 ·3CuCl 2 ·2H 2 O has low-field and high-field magnetically ordered phases at lo…
High-Density Polyethylene (HDPE)-based composites with alkaline copper quaternary (ACQ)-and micronized copper quaternary (MCQ)treated wood fibers were manufactured through injection molding. The mechanical properties, water absorption, and biological resistance properties of the fabricated composites with different co…
In the present work, an approach of fabricating pseudoperiodic antireflective subwavelength structures (ARS) on fluorescent SiC by using self-assembled etch mask is demonstrated. By applying the pseudoperiodic (ARS), the average surface reflectance at 6° incidence over the spectral range of 390-785 nm is dramatically…
The work demonstrates a switchable transflective liquid crystal display using a cholesteric liquid crystal (CLC) film as a switchable reflector. The planar and uniformly-lying helical (ULH) states of CLCs support the reflective and transmissive modes of the display, respectively. Both planar and ULH textures are stabl…
We have carried out a theoretical study of the effect of the electric field E on the thermodynamical properties and surface tension γ of free-standing smectic films. Calculations, based upon the extended McMillan approach with anisotropic forces, show a stepwise reduction and increase of the values of the Helmholtz fr…
Abstract Three copper‐rich framework selenoarsenates, (H 2 en) 1.5 [Cu 8 (μ 8 ‐Se)(AsSe 4 ) 6/2 ] ( 1 ), (H 2 dap) 1.5 [Cu 8 (μ 8 ‐Se)(AsSe 4 ) 6/2 ] ( 2 ), and Na 2 (H 2 dap) 0.5 [Cu 8 (μ 8 ‐Se)(AsSe 4 ) 6/2 ] ( 3 ), were synthesized under solvothermal conditions. These three compounds are isostructural and contain a…
ABSTRACT Antireflective light trapping glass nanostructures fabricated by a non‐lithographic process are investigated for their angle dependent properties to improve the omnidirectional performance of solar modules. Optical transmission and solar cell module I‐V measurements are used to understand the dependence of an…
Nanoparticles in polymer films have shown the tendency to migrate to the substrate due to an entropic-based attractive depletion interaction between the particles and the substrate. It is also known that polymer-grafted nanoparticles show better dispersion in a polymer matrix. Here, molecular dynamics simulations are…
We introduce the notion of the strongly correlated band insulator (SCI), where the lowest energy excitations are collective modes (excitons) rather than the single particles. We construct controllable 1/N expansion for SCI to describe their observable properties. A remarkable example of the SCI is bilayer graphene whi…
A number of techniques have been proposed during the last three decades for noise variance and signal-to-noise ratio (SNR) estimation in digital images. While some methods have shown reliability and accuracy in SNR and noise variance estimations, other methods are dependent on the nature of the images and perform well…
In this study, the optical and mechanical properties of polyurethane were improved by modified nanocrystalline cellulose (NCC). The surface of NCC was modified by 3-glycidoxypropyltrimethoxysilane (GPTMS) and 3-methacryloxy-propyltrimethoxysilane (MPS) to overcome the lack of compatibility with polyurethane. Polyureth…
Abstract A facile approach to thermally stable and efficient solid‐state emitters is proposed. By hooking up tetraphenylethene (TPE) units through aryl linkers under Suzuki coupling conditions, a series of arylene bis(tetraphenylethene)s (TPE‐Ar‐TPE Ar=2,5‐dimethyl‐1,4‐phenylene, 2,5‐bis(hexyloxyl)‐1,4‐phenylene, 1,5‐…
Zn(0.98)Mn(0.02)O nanocrystals were synthesized by the wet chemical route and were treated with different content of octylamine. The environment around Mn and the defect type and concentration were characterized by photoluminescence, Raman, X-ray photoelectron spectroscopy, and X-ray absorption fine structure. It is f…
A model system of Mg – Al ‐spinel doped with 5 wt% lithium fluoride was examined using transmission electron microscopy and X ‐ray diffraction to verify three major processes during sintering, as postulated in literature. Densification and sintering is facilitated by the addition of LiF that forms different transient…
To reduce the fuel consumption and emission of passenger vehicles, aluminum engines have been increasingly used throughout the last 30 years. Since most conventional aluminum alloys have poor wear resistance, various technical solutions have been developed to generate a wear-resistant cylinder bore surface against the…
Purpose Polymeric systems based on polyesteramides (PEA) are high performance materials, which combine the useful properties of polyester and polyamide resins, and find many applications, most importantly as protective surface coatings. The purpose of this paper is to characterise and evaluate new modified anti‐corros…
Abstract The solvothermal synthesis and characterisation of [C 6 H 16 N 2 ][GaS 2 ] 2 ( 1 ), [C 6 H 16 N 2 ][Ga 2 Se 3 (Se 2 )] ( 2 ), and mixed‐metal phases with composition [C 6 H 16 N 2 ][Ga 2– x In x Se 3 (Se 2 )] (0 < x < 2)( 3 – 5 ), is described. These materials have been characterised by single‐crystal a…
Abstract During attempts to prepare functionalized 5‐iodopyridine derivatives the unexpected formation of iodo[1,3]dioxolo[4,5‐ c ]pyridines was discovered. The conversion of 3‐alkoxypyridin‐4‐ols into the corresponding 5‐iodo compounds was achieved by reaction with one equivalent of iodine or tetramethylammonium dich…
The two-dimensional and three-dimensional acoustic cloaks composed of homogeneous and nonsingular materials are designed by choosing appropriate spatial transformation. The mass density tensor and bulk modulus of the acoustic cloaks with diamond shape are derived, and extended to an acoustic carpet cloak. Performance…