Moscow Polytechnic University (Russian: Московский политехнический университет, romanized: Moskovski politekhnicheski universitet) or Moscow Polytech is a university in Moscow. It specializes in the field of automobile and tractor design. It was founded in 1866 as Komissarov Technical School.From 2012 to 2016, its name was Moscow State University of Mechanical Engineering (MAMI) (Russian: Московский Государственный Машиностроительный Университет (МАМИ)), where MAMI stood for Moscow Automechanical Institute..
In the present study, facile and green method for h-BN ultrasonic exfoliation was proposed. Exfoliated hexagonal boron nitride nanosheets characterized via transmission electron microscopy, atomic force microscopy as well as static light scattering, were used as fillers in silicone-based films, which enabled to significantly increase both their in-plane thermal conductivity and anisotropy of thermal properties (increase of 23.9 and 4.8 times, respectively, as compared to pure silicone). Composite films exhibited in-plane and through-plane thermal conductivity of 2.653 and 0.529 W/m K, respectively. At the same time, composites showed excellent electrical insulation properties—high volume resistance (1016 Ohm cm), low permittivity (2.6) and dielectric loss tangent (0.02) at frequencies below 400 kHz.
The scope of this work is to produce composites of bacterial cellulose (BC) and alginates in stationary regime on media containing various amounts of sodium alginate (SA) and to optimize the protocols for their cross-linking and purification. We suggested and tested a new single-step protocol, combining both cross-linking and purification by treatment in Ca(OH)2. The effectiveness of purification and the content of alginate was controlled by infrared spectroscopy and thermo-gravimetric analysis (TGA). It was shown that the suggested protocol yielded the 69
A comprehensive study of the supramolecular organization of floating layers and Langmuir–Schaefer films of the heteronuclear complex “phthalocyanine-O-subphthalocyanine” is reported. The molecular packing of the studied compound in monolayer structures on a water surface was simulated, and the unit-cell parameters of the monolayer were calculated. Using grazing-incidence X-ray diffraction, X-ray standing-wave technique, and Brewster angle microscopy data, it was shown that this compound forms stable and uniform X-ray amorphous layers with edge-on molecular packing at the air/water interface. The obtained results open the possibility of effectively using thin-film structures based on the obtained Langmuir layers in nanoelectronics.
In this article, we described a successful approach to deposition and further local reduction of graphene oxide film for formation of biosensor. We used improved graphene oxide suspension with additional organic solvent by which we obtained better wettability of PET substrate. By local laser reduction of graphene oxide film we made sensor topology with different reduction level. We used thrombin aptamer to form sensitive layer of a biosensor and showed high sensitivity and selectivity of sensor that can be used for new point-of-care devices and personalized medicine in the future.
The texture, residual stresses, and phase composition in the friction stir welding (FSW) joints of a 1424 alloy ((wt
