Combined method of stabilization of the glow discharge in gas flow

The orientational structure in a polymer-liquid crystal thin film induced by uniaxial mechanical deformation has been studied. It is shown that the dependence of the deflection angle of the director of a nematic liquid crystal on the direction of the tensile force has a hysteresis region in which the orientation structure spontaneously changes from a state with positive torsion of the director to a state with negative torsion. It is established that the effect of modification of the hysteresis loop leads to an expansion of the hysteresis region and a decrease in the field at which orientation bistability appears.

Section: Discussionmentioning

confidence: 78%

Hysteresis Phenomena and the Effect of Reorientation in a Polymer-Liquid Crystal System Under the Influence of Laser Radiation and Uniaxial Deformation

Makhsudov

Fayzulloev

Egamov³

2022

“…The results of plasma-chemical synthesis of carbon nanostructures from hydrocarbons are given in [5][6]. In [7][8][9], methods for increasing the stability of electric discharges in the processes of synthesis of various nanostructures were studied. In…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Microdiamonds and Germanium Nanotubes In the Argon-Germanium Arc

Тимеркаев

Abdullin

Suleimanov

et al. 2022

The paper describes a technique for the synthesis of microdiamonds, germanium nanoballs and nanotubes in an argon-germanium arc. The evaporation of germanium atoms was carried out from the surface of a graphite rod, which served as the anode of the arc discharge. The synthesis of microdiamonds was observed on graphite substrates near the anode; germanium nanotubes and germanium nanoballs were also found nearby. It has been established that germanium promotes the synthesis of nano and microdiamonds. Synthesized diamonds have a classic structure with rectangle faces and four hexagons adjacent to the edges of this rectangle. The sizes of microdiamonds reach tens of microns. The diameters of germanium nanotubes are of the order of 50-100 nm, and the length is of the order of 10 μm.

“…The results of plasma-chemical synthesis of carbon nanostructures from hydrocarbons are given in [9][10]. In [11][12][13], methods for increasing the stability of electric discharges in the processes of synthesis of various nanostructures were studied.…”

Section: Introductionmentioning

confidence: 99%

Nanodiamonds from Fuel

Тимеркаев

Shakirov

Zalyalieva

et al. 2022

In this paper, we present the results of the synthesis of nanodiamonds from carbon nanostructures and diamondoids in an arc discharge. The electrodes used in the experiments were a molybdenum cathode and a copper anode coated with carbon nanostructures such as carbon nanotubes and diamondoids. The formation of carbon nanostructures on the surface of a copper electrode was carried out in an electric arc sunk into fuel oil. At the next stage, these carbon nanostructures served as a source of atomic carbon and diamondoids from the surface of the arc discharge anode. The use of fuel oil as a feedstock for creating the electrode material probably led to the retention of diamondoids contained in fuel oil during two vaporizations. It was found that, in addition to carbon nanotubes, nanodiamonds also formed on the cathode surface.