Materials Literature
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The present work aims at the characterization of antireflection coating (ARC) films in the visible spectrum. Up to five layers of antireflection coating film were designed and simulated, and optical reflection values were deduced with a transfer matrix method (TMM) formulation. Six materials including nanoporous mater…
The structure, thermoelastic martensitic transformations, and physical properties of the usual microcrystalline and rapidly quenched submicrocrystalline ternary alloys of the quasi-binary TiNi–TiCu section with a copper content to 35 at % have been studied in a wide temperature range. The fine structure of the alloys…
Samples of the optical scintillation ceramic ZnO:In with an indium concentration from 0.075 to 1.6 mass% have been obtained by uniaxial hot pressing. Studies have established that indium has a significant and nontrivial influence on the structure, the character of the microstructure, the spectral transmittance, and th…
Functionally graded materials (FGM) are materials in which one or several material properties vary continuously as a function of space. In this work, optimized spatial distribution of dielectric permittivity is obtained with the objective of efficient electric stress control. This is of significance to solid insulator…
Summary Swelling of cross‐linked polymer constructs in which swelling of network is constrained by adhering rigid substrate or another cross‐linked polymer (coatings, core‐shell particles, and particulate composites of rigid filler in cross‐linked matrix) is investigated. The equilibrium state was modeled analytically…
SiO2/TiO2 double-layer films with antireflective and self-cleaning properties were prepared by dip-coating glass substrate into cost-effective SiO2 and TiO2 sol successively and subsequently being calcined at 500 °C. The optical and structural properties of films have been investigated by UV-visible spectrophotometer…
Cement bonded composites of 1250 kg/m 3 were made in the laboratory either as single layer composed of exclusively oil palm empty fruit bunch (EFB); Tropical hardwood sawmill residue (THSR) or randomly mixed particles (40% of EFB and 60% of THSR oven dry wt/wt) OR of 3-layer composed of 1:2:1 ratio (for face layer of…
We investigate the structural and optical properties of GeO/SiO 2 multilayers obtained by evaporation of GeO 2 and SiO 2 powders under ultrahigh vacuum conditions on Si(001) substrates. Both Raman and infrared absorption spectroscopy measurements indicate the formation of GeSi nanocrystals after postgrowth annealing a…
In this paper we propose a theoretical and experimental study of the nature of metal-graphene contacts. We use ab-initio simulations and semi-analytical modeling to derive and validate a simple two-parameter model of metal-graphene contacts. Such findings are supported by experimental results for large samples of diff…
Summary In order to replicate the function of the native dermis, we prepared fibrillized collagen‐GAGs complex matrix possessing the similar structure as native dermis structure using collagen re‐arrangement phenomenon in the physiological conditions. For GAGs, hyaluronic acid, chondroitin‐6‐sulfate, and heparin were…
Porphyrin macrocycles play an important role in designing of fluorophores with superior light harvesting properties similar to that of antennas in biological systems. In this paper, new Zn(II)porphyrin dyes were investigated to improve the performance of the YD2-o-C8 using density functional theory (DFT) and time-depe…
Advanced drug delivery system development is very important for the cancer therapies. The fixing of specific targeting ligands onto biodegradable carriers can add specificity to the usual chemotherapeutical treatments that current chemotherapies lack of. This study describes the preparation of a new nanoparticle syste…
Resumo Esferas de goma do cajueiro carboximetilada e quitosana foram produzidas via complexação polieletrolítica. As esferas foram modificadas quimicamente de modo a obter-se sistemas estáveis em meio ácido e que apresentassem uma resposta de intumescimento diferenciado frente à variação de pH. As esferas foram modifi…
In this article, we submit the description of synthesis and identification of manganese(II) complexes with pyrogenic nanosilica-immobilized (d av = 10 nm; S sp = 290 m(2)/g) hydroxyaldimine ligands [Formula: see text]: salicilaldiminopropyl (L1); 5-bromosalicilaldiminopropyl (L2); 2-hydroxynaphtaldiminopropyl (L3); 2-…
Abstract: Restoration of function following damage to the central nervous system (CNS) is severely restricted by several factors. These include the hindrance of axonal regeneration imposed by glial scars resulting from inflammatory response to damage, and limited axonal outgrowth toward target tissue. Strategies for p…
Abstract The effect of different organic charge transporting materials on the photoluminescence of CdSe/ZnS core/shell quantum dots has been studied by means of steady-state and time-resolved photoluminescence spectroscopy. With an increase in concentration of the organic charge transporting material in the quantum do…
Nano-sized magnesium-zinc powders are synthesized, by using the sol-gel autocombustion technology. On the basis of X-ray researches, the phase composition of non-magnetic substituted ferrite systems is determined. The resulting complex oxide powders are found to be agglomerated. The agglomerates consist of several nan…
Microwave-induced magnetoresistance and magnetoconductance oscillations in the two-dimensional electron system have been detected in a ZnO/Mg x Zn1–x O heterojunction. The structure has a high electron density of n = 6.5 × 1011 cm–2 and a very low mobility of 105 cm2 V–1 s–1. This clearly indicates that the mobility o…
Abstract An Iranian sepiolite was activated with 1.5 M HCl. During activation, the specific surface area increased from 105 to 168 m 2 /g and the SiO 2 content increased from 45.4 to 51.6%. The roles of temperature and time and the amount of acid-activated sepiolite used, were investigated and the optimum conditions,…
Undoped ZnO, Gd doped ZnO (GZO) thin films were prepared by chemical spray pyrolysis method at 350°C on glass substrates. The effect of gadolinium doping on structural, morphological, optical and electrical properties as function of dopant concentration has been studied. X-ray analysis showed that the films are polycr…