Synthesis of Nanostructured Catalytic Materials from Microemulsions
Since the 1980s [1,2], colloidal systems such as microemulsions (ME) have been widely investigated, especially for the synthesis of nanomaterials for various applications.[...]
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Properties of materials based on the MAX-phases (Rеview)
Научный центр порошкового
Radio-photoluminescence of Ag-doped Li3PO4-Al(PO3)3 Glass
We report a radio-photoluminescence (RPL) oxide glass with a new composition: 30Li3PO4-70Al(PO3)3-0.5Ag2O. The as-prepared sample, prepared by a conventional melt-quenching method, only shows a PL emission at 425 nm upon excitation at 340 nm; however, after X-ray irradiation, an additional PL emission is observed arou…
On the bending and stability of nanowire using various HSDTs
In this article, various higher-order shear deformation theories (HSDTs) are developed for bending and buckling behaviors of nanowires including surface stress effects. The most important assumption used in different proposed beam theories is that the deflection consists of bending and shear components and thus the th…
Phase equilibria and thermodynamic properties of oxide systems on the basis of rare earth, alkaline earth and 3d-transition (Mn, Fe, Co) metals. A short overview of
Review is dedicated studies of phase equilibria in the systems based on rare earth elements and 3d transition metals. It’s highlighted several structural families of these compounds and is shown that many were found interesting properties for practical application, such as high conductivity up to the superconducting s…
Critical buckling load of chiral double-walled carbon nanotube using non-local theory elasticity
The present paper investigate the elastic buckling of chiral double-walled carbon nanotubes (DWCNTs) under axial compression. Using the non-local elasticity theory, Timoshenko beam model has been implemented. According to the governing equations of non-local theory, the analytical solution is derived and the solution…
Optical Performance Enhancement of Quantum Dot-Based Light-Emitting Diodes Through an Optimized Remote Structure
Quantum dot (QD)-based light-emitting diodes (LEDs) always show low efficiency and unstable performance at high driving currents due to the saturation effect of QDs. In this paper, a novel remote packaging structure was proposed to reduce the saturation effect and enhance optical performances of QD-based LEDs. In the…
Effects of Particle Hydrophobicity, Surface Charge, Media pH Value and Complexation with Human Serum Albumin on Drug Release Behavior of Mitoxantrone-Loaded Pullulan Nanoparticles
We prepared two types of cholesterol hydrophobically modified pullulan nanoparticles (CHP) and carboxyethyl hydrophobically modified pullulan nanoparticles (CHCP) substituted with various degrees of cholesterol, including 3.11, 6.03, 6.91 and 3.46 per polymer, and named CHP−3.11, CHP−6.03, CHP−6.91 and CHCP−3.46. Dyna…
Scalable Fabrication of Natural-Fiber Reinforced Composites with Electromagnetic Interference Shielding Properties by Incorporating Powdered Activated Carbon
Kenaf fiber-polyester composites incorporated with powdered activated carbon (PAC) were prepared using the vacuum-assisted resin transfer molding (VARTM) process. The product demonstrates the electromagnetic interference (EMI) shielding function. The kenaf fibers were retted in a pressured reactor to remove the lignin…
The use of nanotechnology in the agriculture
Nanotechnology is considered the most important technological advancement in recent years, and it is utilized in all industries due to its potential applications. Almost all of the industries (food, agriculture, medicine, automotive, information and communication technologies, energy, textile, construction, etc.) reor…
Ultraviolet Detection Properties of p-Si/n-TiO2Heterojunction Photodiodes Grown by Electron-Beam Evaporation and Sol–Gel Methods: A Comparative Study
This paper reports a comparative study of the ultraviolet (UV) detection properties of n-TiO2/p-Si heterojunction devices fabricated using two different deposition techniques namely the electron-beam evaporation (EBE) and sol-gel (SG) methods. A systematic study has also been carried out to investigate the structural,…
Optical-Phonon-Limited High-Field Transport in Layered Materials
An optical-phonon-limited velocity model has been employed to investigate high-field transport in a selection of layered 2-D materials for both, low-power logic switches with scaled supply voltages, and high-power, high-frequency transistors. Drain currents, effective electron velocities, and intrinsic cutoff frequenc…
Spontaneous symmetry breaking and quantum Hall valley ordering on the surface of topological hexaborides
A number of strongly correlated heavy fermion compounds, such as samarium (Sm), ytterbium (Yb), plutonium (Pu) hexaboride, are predicted to become topological insulators at low temperatures. These systems support massless Dirac fermions near certain (three) points of the surface Brillouin zone, hereafter referred to a…
First principles study of electronic structure for cubane-like and ring-shaped structures of M4O4, M4S4 clusters (M = Mn, Fe, Co, Ni, Cu)
Spin-polarized DFT has been used to perform a comprehensive study of the geometric structures and electronic properties for isolated M4X4 nano-clusters between their two stable isomers - a planar rhombus-like 2D structure and a cubane-like 3D structure with M = Mn, Fe, Co, Ni, Cu ; X = O, S. These two structural patte…
Electrical properties of RF sputtered PMN-PT thin films on LCMO buffered platinized glass substrate
Lead based relaxor ferroelectric thin films have been of technological importance due to excellent properties for several commercial applications. However subtleness and high cost of fabrication have plagued of these materials. In this work a systematic study of PMN-PT thin films grown on LCMO buffered platinized glas…
Robust Thermoresponsive Polymer Composite Membrane with Switchable Superhydrophilicity and Superhydrophobicity for Efficient Oil–Water Separation
Herein, we report for the first time on the fabrication of a robust, thermoresponsive polymer membrane produced by the combination of an elastic polyurethane (TPU) microfiber web and poly(N-isopropylacrylamide) (PNIPAM). PNIPAM hydrogel is evenly coated on the surface of TPU microfibers, and thus, the wettability of T…
Local structure analysis of magnetic transparent conducting films by x-ray spectroscopy
Abstract We prepared Mn-doped indium-tin oxide (ITO) films on glass substrates by radio-frequency magnetron sputtering and investigated local structures surrounding Mn ions in the films by x-ray absorption spectroscopy. The Fourier transform of the extended x-ray absorption fine structure (EXAFS) spectrum indicated th…
Effect of Amine-Based Organic Compounds on the Work-Function Decrease of Graphene
We have demonstrated that amine and alkyl groups, applied by a simple spin-coating method, can provide an n-type doping effect on graphene sheets. The organic compounds used in this work are based on amine, phenyl amine, butylphenyl amine, benzoylphenyl amine, and tolylvinylphenyl amine groups. The increases in sheet…
Phosphotungstate-Based Ionic Silica Nanoparticles Network for Alkenes Epoxidation
An inorganic-organic porous silica network catalyst was prepared by linking silica nanoparticles using ionic liquid and followed by anion-exchange with phosphotungstate. Characterization methods of FT-IR, TG, SEM, TEM, BET, etc., were carried out to have a comprehensive insight into the catalyst. The catalyst was used…
Ternary Mn 3 NMn 1− x Ag x compound films of nearly constant electrical resistivity and their magnetic transport behaviour
Abstract Antiperovskite thin films were successfully prepared by reactive magnetron sputtering. The increasing substitution of Ag atoms at the Mn A -sites of cubic Mn 3 NMn lattice leads to the metal-to-semiconductor transition, through which a vanishingly small temperature coefficient of resistivity down to 20 ppm K…