Materials Literature
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The influence of resonant vibrational excitation of ethylene molecules in combustion chemical vapor deposition of diamond was investigated. Resonant vibrational excitation of the CH 2 -wagging mode (a type c fundamental band, υ 7 , at 949.3 cm −1 ) in ethylene molecules was achieved by using a wavelength-tunable CO 2…
Using the method of matched asymptotic expansions, the problem of the capillary rise of a meniscus on the complex-shaped fibres was reduced to a nonlinear problem of determination of a minimal surface. This surface has to satisfy a special boundary condition at infinity. The proposed formulation allows one to interpre…
Carbon nanotubes (CNT) based gas sensors have attracted interest due to their excellent properties. Several studies have reported changes in the CNT’s electrical properties when functionalized with platinum (Pt) nanoparticles. In this investigation, the vapor phase impregnation decomposition (VPID) method was employed…
Unless stabilized by colloids or confinement with well-defined boundary conditions, defects in liquid crystals remain elusive short-lived objects that tend to disappear with time to minimize the medium's free energy. In this work we use multimodal three-dimensional imaging to visualize cholesteric director structures…
In the present study, poly(thiophene amide) (PTA) was prepared from 1,3-phenylenediamine, 2,4-diaminophenol, and 2,5-thiophenedicarbonyl. Thermally and mechanically stable poly(methyl methacrylate) (PMMA)-based nanocomposites have been produced through the reinforcement of electrospun PTA-silica–titania-grafted multiw…
Ultrashort laser pulse-induced anti-Stokes photoluminescence of hot electrons in gold nanorods, Sitnikov, D S, Yurkevich, A A, Kotelev, M S, Ziangirova, M, Chefonov, O V, Ilina, I V, Vinokurov, V A, Muradov, A V, Itzkan, I, Agranat, M B, Perelman, L T
We report the results of measurements of the threshold of Freedericksz transition in a nematic liquid crystal doped by Methyl-red. We show that in case of dc field the threshold voltage can decrease or increase depending on the light dose, due to the light-induced desorption and adsorption of charge complexes from and…
Spinning triangle is a critical region in the spinning process of staple yarn, which geometry influences the mechanical performances of fibers in the spinning triangle and determines the physical performance of spun yarns directly. Taking appropriate measures to reduce the spinning triangle and improve the qualities o…
We report neutron scattering measurements on low-energy ($\ensuremath{\hbar}\ensuremath{\omega}\ensuremath{\sim}5$ meV) magnetic excitations from a series of ${\mathrm{Fe}}_{1+y\ensuremath{-}z}$(Ni/Cu)${}_{z}$${\mathrm{Te}}_{1\ensuremath{-}x}$${\mathrm{Se}}_{x}$ samples which belong to the ``11'' Fe-chalcogenide famil…
The 15 N NMR chemical shifts of possible nitrogen-containing moieties at edges and defects of graphene are investigated by using the first-principles method. Our computational results show that pyridine-like and graphite-like N can be rather easily identified using the 15 N NMR technique, in agreement with experiment.…
Physisorption of molecular hydrogen on single-walled carbon nanotubes (SWCNTs) is important for its engineering applications and hydrogen energy storage. Using molecular dynamics simulation, we study the physisorption of molecular hydrogen on a SWCNT with a vacant defect, focusing on the effect of the vacant defect si…
Electro-optical properties of liquid crystal (LC) gratings with alternate twisted nematic (TN) and planar aligned (PA) regions are simulated. Three typical steps are introduced: first, the LC director distributions of the two different regions are simulated. Then, the phase and amplitude of the emergent light in each…
The Paton Welding Journal, 2014, №05. International Scientific-Technical and Production Journal «The Paton Welding Journal» «The Paton Welding Journal» has been published monthly since 2000 in English, ISSN 0957-798X. «The Paton Welding Journal» is a cover-to-cover English translation of the «Avtomaticheskaya Svarka»…
We developed Pyrene-Gadolinium (Py-Gd) nanoparticles as pH-sensitive magnetic resonance imaging (MRI) contrast agents capable of showing a high-Mr signal in cancer-specific environments, such as acidic conditions. Py-Gd nanoparticles were prepared by coating Py-Gd, which is a complex of gadolinium with pyrenyl molecul…
Low-temperature curing approach has been adopted to fabricate the composites along with room temperature method involving four types of nanofillers. With the purpose to investigate the multifunctionality caused by carbon nanotubes (CNTs)/carbon nanofibers (CNFs), mechanical properties such as flexural modulus, flexura…
In recent years, interest in used rubber recycling, mainly focusing on the utilization of end‐of‐life tires, has heightened. This interest, is owing to the activities related to environmental protection and economic factors, which both stimulate companies to reuse the high‐quality rubber present in ground rubber scrap…
Three ordered structures of the tetragonal BaAl4 type were identified in the Ba-Au-Sn system, from which a unified view of the interplay between the valence electron counts (VECs) and phase stabilities of these three types of derivatives can be developed. The BaNiSn3 (I4mm), ThCr2Si2 (I4/mmm), and CaBe2Ge2 (P4/nmm) ty…
Felting is a unique attribute of animal fibres used for the production of a range of industrial and apparel textiles. Felting can be an adverse attribute as a consequence of dimensional shrinkage during laundering. As there is little objective information regarding the feltability of rare animal fibres or the factors…
Abstract The aim of this research was to investigate the influence of different antioxidant systems containing vitamin E (VE) and antioxidant 168 (AO) on the photodegradation of wood flour/polypropylene (WF/PP) composites, as well as to provide insight into the processes taking place in these systems during weathering…
In this work, we demonstrate that a preassembled block copolymer (BCP) thin film can be floated, transferred, and utilized to effectively nanopattern unconventional substrates. As target substrates, we chose Cu foil and graphene/Cu foil since they cannot be nanopatterned via conventional processes due to the high surf…