Effect of Post-Implantation Heat Treatment Conditions on Photoluminescent Properties of Ion-Synthesized Gallium Oxide Nanocrystals.

A novel and promising way for creating nanomaterials based on gallium oxide is the ion synthesis of GaO nanocrystals in a SiO/Si dielectric matrix. The properties of nanocrystals are determined by the conditions of ion synthesis-the parameters of ion irradiation and post-implantation heat treatment. In this work, the light-emitting properties of GaO nanocrystals were studied depending on the temperature and annealing atmosphere.

Electrical Characteristics of CMOS-Compatible SiO-Based Resistive-Switching Devices.

The electrical characteristics and resistive switching properties of memristive devices have been studied in a wide temperature range. The insulator and electrode materials of these devices (silicon oxide and titanium nitride, respectively) are fully compatible with conventional complementary metal-oxide-semiconductor (CMOS) fabrication processes. Silicon oxide is also obtained through the low-temperature chemical vapor deposition method.

Structure and Chemical Composition of Ion-Synthesized Gallium Oxide Nanocrystals in Dielectric Matrices.

The ion-beam synthesis of GaO nanocrystals in dielectric matrices on silicon is a novel and promising way for creating nanomaterials based on gallium oxide. This research studies the regularities of changes, depending on the synthesis regimes used, in the chemical composition of ion-implanted SiO/Si and AlO/Si samples. It has been shown that the formation of Ga-O chemical bonds occurs even in the absence of thermal annealing.

Ion-Beam Synthesis of Gallium Oxide Nanocrystals in a SiO/Si Dielectric Matrix.

A new method for creating nanomaterials based on gallium oxide by ion-beam synthesis of nanocrystals of this compound in a SiO/Si dielectric matrix has been proposed. The influence of the order of irradiation with ions of phase-forming elements (gallium and oxygen) on the chemical composition of implanted layers is reported. The separation of gallium profiles in the elemental and oxidized states is shown, even in the absence of post-implantation annealing.

Cooperative effects of cofilin (ADF) on actin structure suggest allosteric mechanism of cofilin function.

Using site-specific fluorescence probes and cross-linking we demonstrated that cofilin (ADF), a key regulator of actin cellular dynamics, weakens longitudinal contacts in F-actin in a cooperative manner. Differential scanning calorimetry detected a dual nature of cofilin effects on F-actin conformation. At sub-stoichiometric cofilin to actin ratios, cofilin stabilized sterically and non-cooperatively protomers at the points of attachment, and destabilized allosterically and cooperatively protomers in the cofilin-free parts of F-actin.

Reproductive capacities in the polyploid males of spined loaches from the unisexual-bisexual complex, occurred in the Moscow River.

The unisexusal-bisexual complex of spined loaches from genus Cobitis, occurred in the Moscow River, includes two tetraploid forms. One of them consists of males and females. The studies of spermatogenesis as well as spermatozoa mobility and ultrastructure, of these males were performed simultaneously with experimental crosses to define their reproductive capacities.