Materials Literature
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In article modern approaches which are used for the stress-strain analysis of car wheels are considered, it is shown, that at the heart of calculations are both fatigue durability and dynamic impact effects, with use of final elements method, lays. Examples of the calculations executed in MADI are presented.
На примере ряда систем «металл – кислород» (Cr–O, Mn–O, Fe–O и Ni–O) подробно описана методика термодинамического моделирования систем, включающих различные фазы переменного состава (металлический твёрдый и жидкий раствор, соединения с отклонениями от стехиометрии). Методика опирается на использование подрешёточной мо…
A targeted low-energy excitation can dramatically alter the course of charge transfer in a molecule.
Korosi merupakan masalah yang banyak dihadapi dalam penggunaan material logam di berbagai bidang industri. Salah satu upaya untuk melindungi logam dari serangan korosi yaitu dengan elektroplating. Penelitian ini bertujuan untuk menguji keefektifan electroplating logam kuningan (CuZn) yang di lapisi perak (Ag) dengan m…
A new peroxo-method for Mg–Zr mixed oxide preparation has been applied. It has been established that this precursor after being heated up to 700 oC is in the form of poorly crystalline Mg–Zr oxide. Thermal and X-ray diffractional analyses have shown that the oxide phase is formed directly from amorphous peroxocomplex,…
Iron (Fe) is an important micronutrient in soils, essential for bacterial growth and carbon metabolism, serving as an enzymatic cofactor for many central carbon metabolic reactions. It has limited bioavailability due to being embedded in Fe oxide and hydroxide minerals. Bacteria secrete high-affinity metal-binding mol…
Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.
Poly(arylene ether sulfone)s are high-performance engineering thermoplastics that have been investigated extensively over the past several decades due to their outstanding mechanical properties, high glass transition temperatures (Tg), solvent resistance and exceptional thermal, oxidative and hydrolytic stability. The…
The spin Hall effect (SHE) induced spin current in some certain heavy transition metals has been shown to impose spin transfer torque (STT) upon an adjacent magnetic layer strong enough to excite magnetization switching and/or magnetic oscillation therein. The similarities and differences between this new paradigm and…
In this thesis we describe the development of a new class of optical components to enhance the imaging performance by enabling adaptations of the optics. When used at extreme ultraviolet (EUV) wavelengths, such ‘adaptive optics’ offers the potential to achieve the highest spatial resolution in imaging known to date, i…
The electronic bands are classified according to their topology. We compute the connection and curvature for the electronic bands and show that the physical properties are determined by topological invariants which are equivalent to the existence of the zero modes. We apply this method to the Topological Insulators an…
Les matériaux tellurites possèdent des propriétés optiques non linéaires exceptionnelles, avec des valeurs de la susceptibilité optique non linéaire d’ordre trois de l’ordre de 10 à 50 fois supérieures à celle de la silice pure, favorisant alors l’efficacité des effets non linéaires. L’origine de ces propriétés optiqu…
By means of density functional theory (DFT) calculations we have quantitatively estimated the impact of the spontaneous polarization (SP) of the SiC(0001) substrate on the electronic properties of quasi-freestanding graphene (QFG) decoupled from the SiC by H intercalation. To correctly include within standard DFT slab…
The experimental control over the twist angle in twisted bilayer graphene has not been reported and its realistic structure is most likely incommensurate. In this paper, we develop a tight-binding virtual crystal approximation theory to study the electronic properties in incommensurate twisted bilayer graphene. The th…
ADVERTISEMENT RETURN TO ISSUEPREVCommentReply to “Comment on ‘Ultrafast Photoluminescence in Quantum-Confined Silicon Nanocrystals Arises from an Amorphous Surface Layer’”Daniel C. Hannah†, Jihua Yang‡, Nicolaas J. Kramer‡, George C. Schatz†, Uwe R. Kortshagen‡, and Richard D. Schaller*†§View Author Information† Depar…
One of the most fascinating properties of nanotubes (NTs) and nanosheets is their smooth surfaces that offer essentially resistance-free transport of small molecules in the form of gases, vapors, and liquids. For example, it has been shown on multiple occasions that the transport through a NT is faster than if there w…
This paper investigates the viability of using carbon fiber reinforced epoxy composites modified with carbon nanotubes to strengthening reinforced concrete (RC) columns. Six RC columns was designed and constructed according to ASCE standards. The columns were wrapped using carbon fiber sheets impregnated with either n…
In hydrometallurgical applications, titanium and its alloys are used as construction material in the most aggressive environments. Under acidic conditions, fluorides are known to be deleterious to titanium, but it is not well known how the presence of small amounts of both fluorides and ferric ions influences the corr…
Recent Advancements in Boron Nitride Nanotube Biomedical Research
Boron Nitride Nanotubes and Nanoribbons Produced by Ball Milling Method