Materials Literature
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Two MoS2 field-effect transistors are compared using graphene and Au/Ti source-drain contacts in respects of their Ohmic and OFF behavior on an identical MoS2 nanosheet. As a result, graphene-contact appears not only to show superior ohmic behavior to those of Au/Ti but also more enhanced OFF state behavior. Such resu…
Entanglement resources are key ingredients of future quantum technologies. If they could be efficiently integrated into a semiconductor platform a new generation of devices could be envisioned, whose quantum-mechanical functionalities are controlled via the mature semiconductor technology. Epitaxial quantum dots (QDs)…
Because of its large density-of-states and the 2π Berry phase near its low-energy band-contact points, neutral bilayer graphene (BLG) at zero magnetic field (B) is susceptible to chiral-symmetry breaking, leading to a variety of gapped spontaneous quantum Hall states distinguished by valley and spin-dependent quantize…
Probing the anomalous nanoscale intermixing using molecular dynamics (MD) simulations in Pt/Ti bilayer we characterize the superdiffusive nature of interfacial atomic transport. In particular, the low-energy ($0.5$ keV) ion-sputtering induced transient enhanced intermixing has been studied by MD simulations. {\em Ab i…
MgH 2 is a promising material for reversible solid‐state hydrogen storage. It is known that particle size can have a strong impact on hydrogen dynamics and sorption characteristics, but more detailed insight has been hampered by the great challenge to prepare small and well‐defined particles and study their hydrogen s…
Metallic nanoparticles (MeNPs) can be formed in living plants by reduction of the metal ions absorbed as soluble salts. It is very likely that plant metabolism has an important role in MeNP biosynthesis. The in vivo formation of silver nanoparticles (AgNPs) was observed in Brassica juncea, Festuca rubra and Medicago s…
Arrays of aligned semiconducting single-walled carbon nanotubes (s-SWCNTs) with exceptional electronic-type purity were deposited at high deposition velocity of 5 mm min(-1) by a novel "dose-controlled, floating evaporative self-assembly" process with excellent control over the placement of stripes and quantity of s-S…
A straightforward strategy has been used to construct large BN-embedded π-systems simply from azaacenes. BN heterosuperbenzene derivatives, the largest BN heteroaromatics to date, have been synthesized in three steps. The molecules exhibit curved π-surfaces, showing two different conformations which are self-organized…
AIM:To investigate the effect of specific silencing hypoxia inducible factor-1 alpha(HIF-1α)by small interference RNA(siRNA)on expression of vimentin in human uveal melanoma cell lines(OCM-1)under hypoxia, in order to discuss the role of HIF-1α on epithelial-mesenchymal transition(EMT)in uveal melanoma. METHODS: OCM-1…
これまで「琉球」、「南島」、「オキナワ」の北限として設定されがちであった奄美群島とトカラ列島との間の「境界線」はどの程度、固定的か。本研究ではこうした疑問から出発して、トカラ列島を主なフィールドに選び、同列島に特徴的な丸木舟の形態と使い分けシステム、推進・操船方法の変遷の過程と背景を明らかにし、これまで筆者が積み上げてきた奄美・沖縄群島各地の船のそれと比較・対照しつつ、あらためて「琉球」、「南島」、「オキナワ」を区切る「境界」について考えてみた。 近代以前、これらの島々では全域で丸木舟が使われていた。それらは名称や形態など多くの技術的特徴を共有していた。島々は同一の圏域をなしていたといえる。しかし、各地の船の使い分けシステムを見る…
A series of titled compounds were prepared and analyzed their purities by literature method. The infrared and NMR spectral group frequencies of the compounds were assigned and correlated with Hammett substituent constants, F and R constants using single and multi linear regression analysis. From the results of statist…
In order to quantify remaining PEG in the conserved waterlogged woods excavated from archaeological sites, fragments of PEG in the woods were analyzed with PyGC/MS. Analytical curve was established by comparison of pyrograms which have several PEG concentrations. We verified that peak areas of each pyrogram are consis…
Composite materials have been increasingly used during the last decades due to their properties such as low weight, high stiffness, superior fatigue and corrosion resistance. They have been used in aerospace, automobile, marine applications and etc. Composite materials being an expensive but efficient technology to ge…
The paper presents the results of research undertaken to investigate cold forming process for 40HM constructional steel suitable for heat treatment. In the first part of the paper, mechanical properties of this steel and its industrial applications are described. The second part of the paper presents the results of th…
An engineering method of design, worked out by the authors, is considered in the paper. It allows to carry out design of amplitude-frequency specter and vibration loading of cylinder cases of the diesel engine of locomotive with account of cavitation-erosion damage. Offered method of design of parameters of cavitation…
Researchers say that the strong, lightweight nanocrystals found in plants could one day be used to reinforce concrete and other man-made materials.
Using nuclear magnetic resonance relaxometry and thermoelectric dynamical methods studied phase transitions and electric power generation properties of hydrate salt CaCl2•6H2O . It can be used as a phase-changing materials (PCM) for heat accumulating/emitting thermal electric energy storage. For studies of phase trans…
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The information given here is provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species.