Materials Literature
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The nuclear spin–lattice relaxation and Knight shift of 71 Ga, 69 Ga, and 115 In nuclei in a ternary liquid gallium–indium–tin alloy of the eutectic composition, which was introduced into pores of an opal matrix and porous glasses with pore sizes of 18 and 7 nm, have been investigated and compared with those for the b…
Research tasks of mechanical strength of ast-resin insulated busbar systems working in Siberia are formulated. The research is aimed to provide the insulation strength at various operating factors. As the methods of investigation a numerical analysis of stress-strain state and mechanical testing of insulation material…
The structures of [Au 4 (dpmp) 2 X 2 ] 2+ clusters, where Х =–C≡CH,–СН 3 ,–SCH 3 ,–F,–Cl,–Br,–I, dpmp is bis((diphenylphosphino)methyl)(phenyl)phosphine, are calculated at the level of density functional theory with the PBE functional and a modified Dirac–Coulomb–Breit Hamiltonian in an all-electron basis set (Λ). Usi…
Shock Response spectrum (SRS) tests are one of the tests that are conducted on some critical systems of spacecraft as part of environmental testing. The SRS tests are conducted to simulate the pyro shoclcs that occur during launch phases as well as during deployment of spacecraft appendages. Some of the methods to car…
In article number 1604310, Giuseppe Barillaro and co-workers show the synergistic cooperation of HF and H2O2 molecules in enhancing the controlled dissolution rate of silicon under anodic biasing. This enables the room-temperature fabrication of high-aspect-ratio (from 10 to 100) microstructures in silicon at record e…
Detection and localization of Partial Discharge (PD) accurately has become an increasingly important topic for researchers in High Voltage (HV) system. PD measurement helps in condition monitoring of the total power system utilities with minimal expenditure, as it acts as an evidence to fault detection prior to outage…
We investigate low-temperature formation process of sputtered-MoS2film. The MoS2 film was formed by radio frequency (RF) sputtering. Then the sputtered-MoS2was annealed in H2S at from 200 to 400°C. We find that the hydrogen sulfur (H2S) annealing compensate for sulfur defects at low temperature significantly, resultin…
Ternary CdSSe quantum dot-sensitized solar cells (QDSCs) have demonstrated advantages such as wide absorption ranges and tunable band structures. However, the oxygen additives absorbed on such multicomponent quantum dot (QD) surfaces induce band bending at the TiO₂/CdSSe interface and prevent charge transport in QDSCs…
In this paper, a coupled Pi-shaped double negative metamaterial has been validated using two established retrieval methods: Nicolson-Rose-Weir method and Transmission-Reflection Method. The proposed unit cell was designed on a Rogers RO3010 substrate with dielectric constant of 10.2 and a thickness of 1.28 mm. The sim…
The purpose of this research is to demonstrate, in an original study, the potentiality of the use of Cajueiro (<i>Anacardium</i> sp.) and Amescla (<i>Trattinikia </i>sp.), two low density tropical wood species, for producing OSB (Oriented strand boards), structural panels that replace plywood for several building purp…
In the paper, Ag 2 O-PVA nanocomposites have been prepared by ultrasound-assisted method and the effect of gamma and neutron irradiation has been studied on their optical and structural properties. X-ray diffraction patterns and thermogravimetric analyses also confirm the formation of silver oxide nanoparticles in pol…
The article presents: the results of studies on the effects of cavitation on the surface of steel during processing in a liquid medium; the analysis of changes of the microstructure and the microhardness of steel under the effect of cavitation; the features of hardening and destruction of the surface layers of steel w…
Summary Liquid natural rubber (LNR) is considered as a new material which can be obtained from degradation of natural rubber (NR). In this work, the degradation of NR latex using photochemical degradation under UV light has been studied. In this preliminary result, the degradation degree was found to depend on paramet…
This study investigated dissolution processes of cavitation bubbles generated during in vivo shock wave (SW)-induced treatments. Both active cavitation detection (ACD) and the B-mode imaging technique were applied to measure the dissolution procedure of biSpheres contrast agent bubbles by in vitro experiments. Besides…
Высокопрочный сплав В-1963 системы Al–Zn–Mg–Cu с малыми добавками циркония, скандия и серебра, разработанный во ФГУП «ВИАМ», предназначен для массивных сильно нагруженных деталей (типа шпангоутов, фитингов, балок и др.) внутреннего набора планера изделий современной авиакосмической техники. Легирование сплава В-1963 с…
A structure made entirely out of an n-type semiconductor can mimic some properties of a p-type semiconductor.
In order to facilitate IR absorption measurements, we have upgraded our Bruker IFS66v/S Fourier-transform infrared (FTIR) spectrometer. A synthetic diamond beam splitter without compensator plate and UHV diamond viewports was installed. We have also modified the IR detector chamber to allow measurements with 5 differe…
From polymer blends can be obtained more useful properties compared with single polymer. In this work, polymer blend (Epoxy (EP): Natural Rubber (NR)) with different ratios of NR (0, 2, 3.5 and 5%wt) and ternary polymer blend with ratio of (Epoxy: 2%NR: 5% wt. PMMA) were prepared. The Mechanical properties were includ…
We investigate crystallinity of sputtered MoS2films formed in various sputtering conditions to enhance the migration. We found that high substrate temperature, high radio frequency (RF) power and long throw were effective for crystallinity improvement of sputtered MoS2films and in these conditions higher Hall-effect m…
In present work, three-dimensional (3D) reduced graphene hydrogels (RGHs) are prepared through an efficient and facile strategy by employing three types of carbohydrates (glucose, fructose and sucrose) as reducing agents in aqueous solution of graphene oxide (GO) with ammonia. The formation of RGHs could be confirmed…