Materials Literature
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Magnetic nanoparticles (MNPs) bear many intriguing properties such as superparamagnetism, high specific surface area, remarkable colloidal stability and biocompatibility, which evoke great interest and desire of exploration in biomedical applications. For the use in the complicated physiological environment, MNPs are…
In the present study silver nanoparticles (Ag-NPs) were prepared by using chemical synthesis. Silver nanocolloid solution has been prepared chemically by the reduction of silver salt using sodium borohydride (NaBH4) and trisodium citrate (C6H5Na3O7.2H2O). Triangular silver nanoplates were also prepared by reducing sil…
Structured plasmonic metamaterial devices offer the design flexibility to be size scaled for operation across the electromagnetic spectrum and are extremely attractive for generating electromagnetically induced transparency and slow-light behaviors via coupling of bright and dark subwavelength resonators. Here, we exp…
One of the most relevant features that a semiconducting channel material can offer when used in a field-effect transistor (FET) layout is its capability to enable both electron transport in the conduction band and hole transport in the valence band. In this way, complementary metal-oxide-semiconductor type application…
The influence of molecular orientation on the melting behavior of draw-annealed poly(phenylene sulfide) fibers is investigated in the present paper. Tools used to probe the investigation were differential scanning calorimetry, polarized light optical microscopy, wide angle X-ray diffraction, and small angle X-ray diff…
Chemical changes of the molecular structure and regulation of aggregation state structure could affect/alter the chemical and physical properties of materials, which is an important means to develop novel high-efficiency organic photoelectric functional materials. Usually, the introduced outer edge alkyl chain of conj…
O fenômeno de emissão por campo é um processo no qual elétrons, por efeito túnel, são extraídos de superfícies sólidas sob influência de campo elétrico externo. Neste artigo apresentamos um cálculo para a probabilidade de tunelamento de elétrons através de superfícies metálicas. Consideramos uma barreira de potencial…
Many factors affect the phase, chemical composition, heating rate, cooling rate, microstructure, deformation will affect the phase transformation. Laboratory testing of finished the test used with different chemical composition, but the heating rate, cooling rate, microstructure and deformation degree are the same. Th…
Based on the material of EPDM, we develop specialized rubber material for low-temperature multi-effect distillation (LT-MED) conditions. For heat transfer tube and tube sheet connected to the rubber (herein referred as EPDM rubber material) ring are used in the LT-MED desalination equipment, we make regular aging and…
Nanofibers produced by electrospinning represent a new class of promising scaffolds to support nerve regeneration. Here, we found that the blended solutions of chitosan (CS) with Poly (vinyl alcohol) (PVA) are appropriate for electrospinning when they form conductive, unstructured fluids displaying plasticity, rather…
In this work, the mechanical properties, such as Vickers microhardness H v , fracture toughness K c , yield strength σ v and brittleness index B i , of <0001> oriented 6H-SiC crystal are systematically evaluated using a microindentation technique under 0.1-2 kg applied load. It is found the H v is decreased as t…
Flake-shape Sendust particles with high microwave magnetic permeability and permittivity were prepared with the method of wet ball milling, and then mixed with the polymer to get a sheet-type composite as an effective EMW absorber. It was found that the composite has a very high shape factor owing to the flaky Sendust…
In this research, the compression deformation were investigated under different elevated temperatures and strain rates, in order to obtain the creep constitutive equation. The effects of aperture load and pore shape on the compression properties of porous Cu alloys were studied by simulating the creep compression defo…
LaNi 5 -xwt%Mg hydrogen storage alloys with different Mg content were made from pure La, Mg and Ni metal powder by mechanical alloying, selecting appropriate ball-milling parameters in 0.4MPa hydrogen atmosphere. The characterizations for hydrogen storage alloy show that a multi-phase alloy composed of MgH 2 , LaH 3 ,…
A first-principles technique capable of describing the nearly excited states of semiconductors and insulators, namely the modified Becke-Johnson (mBJ) potential approximation, is used to investigate the electronic band structure and the optical properties of the spinel oxide SiZn 2 O 4 . The band gap predicted using t…
The electroluminescent properties of an n-GaSb/n-InGaAsSb/p-AlGaAsSb heterostructure with a high potential barrier in the conduction band (large conduction-band offset) at the n-GaSb/n-InGaAsSb type-II heterointerface (ΔE c = 0.79 eV) are studied. Two bands with peaks at 0.28 and 0.64 eV at 300 K, associated with radi…
Magnetic hysteresis effects, present in the force of an E-core reluctance actuator, are examined by simulations and measurements. Simulations have been performed with a 3d finite element method (3d-FEM) and a Preisach model, which is extended with a dynamic magnetic equivalent circuit (MEC) model. Both simulation meth…
As wearing parts, shearer picks, in which the huge consumption and inefficient are caused by the poor quality of brazing, are widely used in the mining process. In this paper, the cemented carbide YG15, 42CrMo steel and HL105 copper brazing film were used as the head, body and solder, respectively, and the furnace bra…
Abstract A new type of nanostructured alignment surface is proposed and demonstrated. As in previous nanostructured alignment surfaces, a large pretilt angle of near 45° can be produced reliably. Moreover, this new structure is fabricated with a mask, and there is no randomness involved. The uniformity and anchoring p…
In this study, the biosynthesis of silver nano cubes was carried out using leaf extract of Peltophorum pterocarphum ( P. pterocarphum ) containing Quercetin-3-O-β-D-Galactopyranoside compound. Simple organic compound extraction and reaction with silver nitrate was carried out. Synthesized nano cubes were characterized…