Materials Literature
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In the current work we present a simple technique to develop a carbon nanofiber (CNF)/zinc sulfide (ZnS) composite material for excellent FED application. CNFs and ZnS microspheres were synthesized by following a simple thermal chemical vapor deposition and hydrothermal procedure, respectively. A rigorous chemical mix…
Two-photon excited fluorescence resonance energy transfer (FRET) between CdTe quantum dots with different emission peaks and Rhodamine B in aqueous solution are investigated both experimentally and theoretically. The photoluminescence and lifetime are measured using a time-resolved fluorescence test system. The two-ph…
A multiscale modeling approach to the prediction of electrical conductivity in carbon nanotube (CNT)–polymer composite materials is developed, which takes into account thermally activated molecular mobility of the matrix and the CNTs. On molecular level, a tight-binding density functional theory and non-equilibrium Gr…
We report an electronic structure study on ${\mathrm{LaO}}_{1\ensuremath{-}x}{\mathrm{F}}_{x}{\mathrm{BiSe}}_{2}$ $(x=0.18)$ by means of photoelectron spectromicroscopy. The Fermi surfaces and band dispersions are basically consistent with the band-structure calculations on ${\mathrm{BiS}}_{2}$-based materials, indica…
ABSTRACT Polypyrrole (PPy) was chemically prepared from aqueous solutions individually containing l ‐serine or l ‐glutamic acid, with the addition of ammonium persulfate as the oxidant. The electrical, XPS and FTIR characterizations indicated that the amino acids co‐doped the PPy backbone. TEM revealed that PPy presen…
SiO <sub>2</sub> nanofilms on flexible substrates were fabricated through a photo-oxidization process, which is promising for transparent insulator coating on optoelectronic devices.
We utilize nanocellulose and semiconductor nanocrystals to reinforce and functionalize a biodegradable transparent film to create a transparent, strong and optically tunable plastic film.
Efficient up-conversion emitters are necessary to generate a full-color 3D display. Rare-earth, co-doped fluorides that efficiently convert near infrared diode laser emission to visible red, green, and blue light by sequential two photon absorption are necessary to accomplish this. An up-conversion medium for a 3D dis…
) was achieved in this work. The PAH-CS had no cytotoxic effect on osteoblast-like MC3T3-E1 cell lines evaluated by the LDH (Lactate dehydrogenase) assay in supernatant medium. Furthermore, the PAH-CS carriers could be entirely transformed to hydroxyapatite after releasing the drug in simulated body fluid (SBF), indic…
A series of dyads that combine a photolabile protecting group (PPG) 4,5-dimethoxy-2-nitrobenzyl and different bis-donor or bis-acceptor dissymmetric chromophores acting as two-photon (2P) absorbers were synthesized. Even for low energy transfer efficiency from the 2PA subunit to the uncaging one, improvement of the 2P…
The assigned anomalous upconversion emission intensity of the <sup>5</sup> D <sub>0</sub> → <sup>7</sup> F <sub>4</sub> transition of Eu <sup>3+</sup> in the double perovskite Sr <sub>2</sub> Ca(W <sub>1−x</sub> Mo <sub>x</sub> )O <sub>6</sub> co-doped with Yb <sup>3+</sup> is shown to be due to a transition metal imp…
The aim of this study is to design a solar off-grid PV system to supply the required electricity for a residential unit. A simulation model by MATLAB is used to size the PV system. The solar PV system is simulated with the case of maximum solar radiation on a sunny day. The results show that the average daily load req…
The most important characteristics of the fragmentation of heterogeneous solids is that the mass (size) distribution of pieces is described by a power law functional form. The exponent of the distribution displays a high degree of universality depending mainly on the dimensionality and on the brittle-ductile mechanica…
A special design procedure allowing to trap layer thicknesses inside specified limits is applied for designing of antireflection coating (AR) for the infrared spectral band of 8-10 µm. The obtained AR design has no too thick layers that may cause delaminating of the deposited AR coating. A special monitoring procedure…
Rod-like ZrB2 powders were synthesised at 1500°C in vacuum by boro/carbothermal reduction using ZrO2, B4C and graphite as the starting materials. During the heating process, the ZrB2 grains primarily grow along the c axis to form a rod-like morphology without any heterogeneous catalyst. The final products are pure rod…
Electrospinning of polymer solutions under a high humidity environment is studied. It is shown that the porous morphology formed after phase separation can be preserved or collapsed depending on three factors: phase demixing time, physical gelation, and viscoelastic properties of the polymer-rich phase. Fibers with ro…
This Chemistry Frontier highlights how supramolecular non-covalent interactions can be employed as effective tools in tailoring the magnetic properties of crystalline functional molecular materials.
Recent reports of the synthesis and assembly of faceted nanoplates with a wide range of shapes and composition motivates the possibility of a new class of two-dimensional materials with specific patterns targeted for a host of exciting properties. Yet, studies of how nanoplate shape controls their assembly - knowledge…
Abstract In this article, we are reporting the catalytic activity of gold nanoparticles (AuNPs) dispersed in a novel eco-friendly Deep Eutectic Solvent (DES; choline chloride and urea) at room temperature. A low energy sputter deposition method is employed to synthesize AuNPs on the DES surface. This is a simple, econ…
Gd <sub>2</sub> (SO <sub>4</sub> ) <sub>3</sub> ·8H <sub>2</sub> O, Gd <sub>2</sub> O <sub>2</sub> SO <sub>4</sub> , and Gd <sub>2</sub> O <sub>2</sub> SO <sub>4</sub> :Eu <sup>3+</sup> nanoparticles have been synthesized by CTD method.