Materials Literature
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The experimental procedure and theoretical grounds of the applicability of the microindentation method as one of the effective techniques of relaxation spectrometry of solid-state polymers have been developed. It has been shown that the glass transition temperature and rheological parameters of the material (unrelaxed…
Aluminum and zinc phthalocyanines (AlPc and ZnPc, respectively) adsorbed on the surface of silica nanoparticles (60 nm in diameter) in aqueous solutions have been found to form H-aggregates, which possess characteristic absorption spectra with bands (having a maximum at 640 nm) in a shorter wavelength region with resp…
The structural features of the crystallization and melting of a system of particles whose pair interaction is described by the Lennard-Jones potential have been considered. The bond order parameter method is used to quantitatively describe the orientational short-range order. The rotational invariants of the second (q…
The interdependence of iron losses and magnetoelasticity in ferromagnetic laminations is studied by numerical simulations. For the simulations, a finite-element model for the eddy currents in the lamination is coupled to a constitutive magnetomechanical material law. We demonstrate how the experimentally apparent rate…
Homooligomeric LonA proteases are the key components of the protein quality control system in bacteria and eukaryotes. Domain organization of the common pool of LonA proteases is determined by comparative analysis of primary and secondary structures of a number of bacterial and eukaryotic enzymes. The similarity of in…
In this paper, we present a numerical analysis method for analyzing the discharge characteristic with the presence of a floating conductor. Space charges generated during the discharge process can accumulate on the surface of the floating conductor, or be emitted from its surface. An intensification of the electric fi…
This paper describes a simple and systematic etching approach for the preparation of smooth vertical bit line (BL), stacked with multiple layers of SiO2(OX) and poly-Si (PL) films for the use in three-dimensional vertical gate (3DVG) NAND flash application. A successful shape evolution from tapered to acceptable BL pr…
Benefiting hugely from many years of experience of conducting vaporization studies with a commercially bought magnetic sector instrument (VG Micromass 30 BK), we designed and constructed a KEMS system having a quadrupole mass spectrometer. It essentially consisted of two chambers, one housing the Knudsen cell furnace…
Main aspects of the Dipole-Quadrupole theory of Surface Enhanced Infrared Absorption (SEIRA) are presented briefly. It is pointed out the possibility of appearance of the lines, caused by totally symmetric vibrations transforming after the unit irreducible representation, which are forbidden in usual infrared absorpti…
A new diamine was prepared via two successive reactions: 6-chloronicotinoyl chloride was reacted with 4,4′-oxydianiline and the obtained dichloro product was reacted with 5-amino-1-naphthol. A novel series of poly(ether amide)s containing flexible ether groups, pyridine polar units, and bulky naphthyl units was prepar…
Graphite oxide reduction is probably one of the best technique used to obtain large quantities of few-layer graphene. We developed a new method to produce reduced graphene oxide by using sodium metal as a reducing agent with subsequent dehydration in concentrated sulfuric acid. The resulting product was characterized…
Photochemical properties of the annelated 2-styrylquinoline ( 2SQ ) derivatives 2-styryl-benzo[g]quinoline ( 2SBQ ) and 3-styrylbenzo[f]quinoline ( 3SBQ ) and 3-styrylacridine ( 3SA ) have been investigated by experimental and quantum-chemical methods. It has been found that the trans -isomer of 3SBQ undergoes the pho…
It has been a great pleasure to serve as the guest editor of this Special Issue entitled “Functional Nanofibers”, which covers all major aspects of organic and inorganic nanofibers, with a particular focus on synthesis by electrospinning. Electrospinning has been recognized as one of the most efficient techniques for…
Dapivirine, formerly known as TMC 120, is a poorly-water soluble anti-HIV drug, currently being developed as a vaginal microbicide. The clinical use of this drug has been limited due to its poor solubility. The aim of this study was to design solid dispersion systems of Dapivirine to improve its solubility. Solid disp…
Cellulose-enrich residue from corn husk was transformed into biodegradable plastic films. After chemical removal of lignin and bleaching the corn husk pulp with hydrogen peroxide, corn husk cellulose powder was received by acid hydrolysis. The esterification of corn husk cellulose was performed using lauroyl chloride…
In this study, the main results of experimental and theoretical investigations that substantiate the possibility of the development of quantum computational systems with a separate structure are considered and analyzed. These systems involve the operational part and the memory, as well as the communication quantum net…
The structure of potassium ferrite KFeO 2 has been studied by high-temperature powder neutron diffraction over a wide temperature range. Based on the structural data, the sizes of potassium cation migration channel have been found in the low- and high-temperature KFeO 2 modifications using the TOPOS program package. I…
After skin grafting, to prevent hematoma or seroma collection at the graft site, a tie-over dressing has been commonly used. However, although the conventional tie-over dressing by suture is a useful method for securing a graft site, refixation is difficult when repeated tie-over dressing is needed. Therefore, we reco…
Infrared spectroscopy is a powerful technique for the characterization of minerals, permitting insights into their structural and thermodynamic properties. The intrinsic complexity of mineral solid solutions makes the interpretation of their spectroscopic data a challenging task. In this work, the IR vibrational spect…
The local electric field enhancement at different points of silver-dielectric-silver nanoshell is investigated using quasi-static theory. Because of the symmetric and anti-symmetric coupling between surface plasmon of inner silver core and outer silver shell, the local electric field spectrum of silver-dielectric-silv…