Materials Literature
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SiO1.2/SiO2 multilayers were grown on n-type (100) Si wafers by ion beam sputtering and subsequently annealed at 1100 °C to form SiO2-embedded Si (S-Si) nanocrystals (NCs). The SiO2 matrix was then removed from S-Si NCs by chemical treatments to prepare freestanding Si (F-Si) NCs. The photoluminescence (PL) peak of F-…
Abstract A novel approach to organic‐inorganic Janus‐like particles based on the alkalization process of polystyrene‐block‐poly(2‐vinylpyridine) (PS‐b‐P2VP) micelles containing FeCl3precursors in the P2VP cores in toluene is presented. It is found that by addition of a small amount of NaOH solution to a solution of th…
First principles total energy calculations have been performed using full potential linear augmented plane wave method (FP-LAPW) within density functional theory to study the structural, electronic and optical properties of MgS x Se 1-x, MgS x Te 1-x and MgSe x Te 1-x alloys in the rock salt crystallographic phase. Th…
The correlation between the strain, spin disorder, and the thickness dependence of the magneto-transport has been investigated in as-grown and post-annealed 25-300-nm thick films of Sm0.55Sr0.45MnO3 (SSMO) deposited on SrTiO3 (STO) and LaAlO3 (LAO) substrates. In the post-annealed SSMO/LAO films, the epitaxial strain…
In spite of their favourable chemical characteristics, using AB5 alloys as fixed bed for hydrogen storage devices requires proper management of a number of technological aspects. Among these, the mechanical stability of metal particle grains under hydrogen cycling and the overall thermal conductivity of the material b…
Abstract This article presents a novel multiband metamaterial structure named butterfly pattern resonator (BPR).The effective medium parameters of this metamaterial are extracted from the full‐wave simulation, which shows that two resonances are caused by different magnetic modes with negative effective permeability a…
Deuteron nuclear magnetic resonance is used to study the phase segregation behavior of photoisomerizable liquid crystal diheptylazobenzene (7AB) confined into cylindrical pores of Anopore membranes. It is demonstrated that the concentration of both components in a binary trans-7AB and cis-7AB mixture can be controlled…
The experimental and theoretical vibrational spectroscopic study of one of a novel antiferroelectric liquid crystals (AFLC), known under the MHPSBO10 acronym, have been undertaken. The interpretation of both FT-IR and FT-Raman spectra was focused mainly on the solid-state data. To analyze the experimental results alon…
Abstract Kinetic Monte Carlo studies (confirmed by integration of the corresponding differential equations) are used to demonstrate the fundamental differences between the two most often accepted schemes of segmental exchange. Modeling of reshuffling systems, originally composed of homopolymers of various $\overline {…
Charge sensitivity analysis was originally introduced in the trivial-atom resolution. Here, we extend this resolution into force-field atoms. The AMBERff99 force-field resolution was employed. The effective electronegativities and hardnesses were derived for five different population analyses (Mulliken, Hirschfeld, AI…
Abstract Quantitative polymerization of 4‐vinyl pyridine (4‐VP) and its quaternization has been done simultaneously for the first time in absence of organic solvents. 1, 4‐dibromo‐2‐butene acts as quaternizing agent. The quaternized polymer has been characterized by chemical, thermal and spectral analysis. The mechani…
Abstract Towers of aligned multiwalled carbon nanotubes (MWCNTs) were electrochemically oxidized in aqueous 1 M NaOH. An oxidation current that decayed with time was monitored using amperometry at a fixed potential. Cyclic voltammetry showed that the background current and electrode capacitance increased after oxidati…
Abstract A new supramolecular species of naphthalene‐diimide cyclophane containing triazole units was synthesized, and its fluorescent responses to metal ions were investigated in dichloromethane (DCM). The fluorescence emission of NDI was quenched by intramolecular electron transfer, whereas the appearance of dimer e…
A new technique is developed to fabricate biomimetic antireflection coatings (ARCs). This technique combines a bottom-up fabrication approach (glancing angle deposition, or GLAD) with a top-down engineering process (ion milling). The GLAD technique is first utilized to produce nanopillar arrays (NPAs) with broadened s…
Abstract In this letter, we propose the design of two new narrowband power splitters in waveguide technology. The proposed layouts are based on the extraordinary transmission phenomenon, obtained using metamaterial‐inspired bi‐omega particles. In this way, the power splitters operate in a narrow frequency range and al…
The synthesis and spectroscopic characterization of azido derivatives of Cu(II) complexes with macrocyclic building blocks of the type [CuLN3] n · [ClO4 · 3/2H2O] n (1), [CuL(N3)2] (2) and [CuL1N3]n · [ClO4]n (3) (where L = 3,10-bisbenzyl-1,3,5,8,10,12-hexaazacyclotetradecane and L1 = 3,10-bisbenzyl-6,13-dimethyl-1,3,…
Abstract Oxidative polycondensation of 3‐(1‐(2‐phenylhydrazono)ethyl)phenol (3‐PHEP) was studied using oxidants such as sodium hypochlorite, air (O2) and hydrogen peroxide in an aqueous alkaline medium under various polymerization conditions. The polymerization yield, molecular weight, solubility, and thermostability…
Abstract We designed a multilayered spherical invisibility cloak with minimum number of isotropic layers by particle swarm optimization technique. The optimization parameters are permittivity and permeability of the layers and their thicknesses. The objective function is the total scattering cross section. For the clo…
ABSTRACT The dual‐primal finite‐element tearing and interconnecting (FETI‐DP) method is combined with the tree‐cotree splitting (TCS) method to expand the capability and improve the efficiency of the finite‐element analysis of electromechanical devices. With the FETI‐DP method, an original large‐scale problem is decom…
Abstract Synthetic adhesives containing 3,4‐dihydroxy‐L‐phenylalanine and its derivatives have strong adhesion strength and good biocompatibility, which make them prime candidates for adhesives or bioadhesives applications. In this study, a new photocurable poly (vinyl alcohol) (UV‐PVA) derivative was prepared and use…