Materials Literature
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In the present work, mono-disperse and uniform orthorhombic lutetium fluoride (LuF3) nanocrystals with an average size of about 35 nm have been successfully synthesized by a simple ionothermal method without any template. The infrared (IR) to visible up-conversion (UC) photoluminescence of LuF3 doped with Yb3+, Tm3+,…
Poly(Vinyl Alcohol) (PVA) films were prepared with AlCl3·6H2O/glycerin and AlCl3·6H2O/poly glycerin as two kinds of complex plasticizer. The micromorphology of pure PVA film and PVA films plasticized with complex plasticizer was observed by Scanning Electron Microscope (SEM). The interaction between complex plasticize…
A series of plate impact shock-reshock and shock-release experiments were conducted by using an one-stage light gas gun to determine the critical shear strength of the 2024 aluminum alloy under shock compression levels ranging from 0.66 to 3.05 GPa in the present study. In the experiments, a dual flyer plate assembly,…
As a supercapacitor electrode, the graphene/polyaniline (PANI) composite sponge with a three-dimensional (3D) porous network structure is synthesized by a simple three-step method. The three steps include an in situ polymerization, freeze-drying and reduction by hydrazine vapor. The prepared sponge has a large specifi…
Visible-light photocatalyst of TiO2/La/Ag nanocomposites were successfully synthesized via the conventional sol-gel method and reducing agent of Ag+. The photocatalytic activities were evaluated by methyl orange (MO) degradation. They have remarkable photocatalytic activities compared to TiO2-Anatase, which is thanks…
Selective synthesis of specific phased nanomaterials via a green route is a promising yet challeng- ing task. In the present work, the hexagonal and monoclinic phases of BiPO4:Ln3+ (Ln = Sm, Eu, Tb, Dy) were prepared via room temperature co-precipitation method. For adjusting the phase of the products, the prepared me…
In this paper, we present an observer design for online estimation of species concentrations in recirculation-based solid oxide fuel cell (SOFC) systems with integrated reformers. For the system considered, on-board reforming of methane results in mixture of several species of different concentrations along the fuel p…
The mobility of lipid bilayers supported on single‐walled carbon nanotube (SWCNT) networks on mica has been investigated by fluorescence recovery after photobleaching (FRAP). The carbon nanotubes have been dispersed by two different bile salt derivatives (sodium taurodeoxycholate (TDOC) and sodium cholate (SC)) as wel…
Abstract With the growing attention in building novel nanostructures, there is a need for general approaches to controlling the sizes and shapes in precipitation processes. Here, precipitated gadolinium hydroxides (Gd(OH) 3 ) were made in the form of hollow spheres by control of the liposome permeability. Addition of…
Dynamic strain measurement is rather important for the characterization of mechanical behaviors in electromagnetic forming process, but it has been hindered by high strain rate and serious electromagnetic interference for years. In this work, a simple and effective strain measuring technique for physical and mechanica…
This paper presents an experimental measurements of ac 50 Hz flashover voltage (kV) of hydrophobic polyester and composite insulators under dry and some environmental conditions. Cylindrical rod polyester composite samples with varying concentrations (20 to 40 weight %) of mica have been prepared to improve the electr…
The objective of this work was to determine the process conditions for converting sodium acetate, the major component of alkaline hardwood extract, into acetic acid and sodium hydroxide using bipolar membrane electrodialysis (BPMED). The effects of current density and sodium acetate concentration in the feed-salt solu…
ITO structures (indium and tin oxides)/glass characterized by high conductivity and transparency and a thickness of up to 3 μm applicable for the fabrication of solar cells on their basis were grown by the chemical vapor deposition technique in a quasi-closed volume using a separate evaporator.
Experimental studies on increasing the transmittance of a light–receiving element (LRE) by applying an antireflection coating were carried out. As an antireflection coating on the solar furnace, the fluoride composite material MgF 2 –CaF 2 was synthesized. Transmission spectra of the LRE without the antireflection coa…
Ta 2 O 5 films of different thicknesses (20–100 nm) synthesized by the molecular layer deposition method on p -type silicon substrates and thermally oxidized silicon substrates have been studied by the methods of high-frequency capacitance–voltage characteristics and photoluminescence. A hole-conduction channel is fou…
Due to its immunity to ambient conditions, the eddy-current position sensor is considered a good candidate for use in high-precision applications. Currently, the eddy-current sensor is not often used in such applications, due to its poor resolution as compared to, for example, the capacitive position sensor. A novel e…
Analysis of properties of cold-setting epoxy adhesives and various types of film adhesives is carried out with reference to their applicability in Arctic conditions. Data on waterproofness, water absorption, and hygroscopic properties of the set adhesive films are determined. The application of adhesive joints at–60°C…
Synthesis of phosphorus-boron-nitrogen-containing modifier (PEDA) has been performed, and the properties thereof have been studied. It has been shown that introduction of PEDA as a modifying additive in elastomeric compositions makes it possible to improve their adhesive and fire–heat protective properties.
The model of the migration and accumulation at dislocations of transmutation helium and the formation of helium–vacancy pore nuclei in austenitic steels upon neutron irradiation has been proposed. As illustrations of its application, the dependences of the characteristics of pore nuclei on the temperature of neutron i…
We have investigated the photovoltaic properties of an inverted bulk heterojunction (BHJ) cell in a device with an indium-tin-oxide (ITO)/electron selective layer (ESL)/P3HT:PCBM active layer/MoOx/Ag multilayered structure. The insertion of only single layer of poly(diallyl-dimethyl-ammonium chloride) (PDDA) cationic…