Conveners
Poster session
- Mykyta Redkin (Ruhr-Universität Bochum, Germany)
Theoretical study on electron acceleration by intense laser beams
in thermal quantum plasmas has been presented. In order to enhance the interaction of accelerated electrons with the laser beam the irradiance over the beam cross
section has been modeled by Cosh Gaussian (ChG) profile. Effect of self focusing of the laser beam on energy gained by the electrons has been investigated in detail....
Further progress in the field of creating functional and multifunctional nanostructured materials and coatings is associated, both with the development of industrial technologies for their production and with the certification of methods for measuring the mechanical properties of nanomaterials. Determination of mechanical properties plays a primary role in the design of new nanomaterials,...
Theoretical investigation on self focusing of an elliptical -Gaussian laser beam carrying an intensity ripple over its cross section, in plasma with axial density ramp has been presented. The optical nonlinearity of plasma has been modeled by the relativistic mass nonlinearity of plasma electrons in the field of laser beam. Using Variational theory approach, semi analytical solutions of the...
A scheme for second-harmonic generation (SHG) of a pair of q-Gaussian laser beams interacting nonlinearly with underdense plasma has been proposed. Due to the relativistic increase in electron mass under the intense fields of the laser beam, the resulting optical nonlinearity of plasma leads cross-focusing of the laser beams. The resulting nonlinear coupling between the two laser beams makes...
Copper mirrors, which were deposited by various technologies, were investigated in the work. The basis for the mirrors was a ceramic substrate made by sintering and pressing silicon carbide. The working layer of copper with a thickness of 0.25-0.30 mm was applied by vacuum or galvanic deposition. After applying the copper layer, the reflective surface was formed by diamond microturning....
Right after the discovery of high temperature superconductivity in 1986 it has provided a new path for scientific enquiry. In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K. For conventional superconductors such a high transition temperature is theoretically not possible. Right now we know only about their nature, however there are...
The investigation of the influence of various chemical substances on the properties of the surface layer of porous silicon is relevant for the creation of sensors of gaseous and liquid impurities. In work, the decoration by isopropyl alcohol of the surface of the porous silicon with different porosity was studied by ellipsometry. The obtained ellipsometric data were processed in a...
Optical properties of the rapidly quenched ribbons of the Fe-based amorphous alloys in the infrared $\lambda$ = 2–25 $\mu$m were studied by spectral ellipsometry. The ellipsometric parameters $\Delta$ and $\Psi$ were measured for several azimuthal directions $\alpha$ in own plane of the samples to detect of its optical anisotropy. The frequency dependencies of the real $\epsilon_1$ and...
The covid pandemic that has taken over the world since 2019 has shown the need for the development of remote patient monitoring and control systems. The need to protect personnel from contamination has led to the use of various methods of disinfection of medical and sanitary facilities in which patients (staff) may be at the time of treatment.
All these problems that humanity faced at that...
There are many ways to protect nanocrystals from degradation and to improve NC properties. One of the most promising is embedding NCs in polymer matrices. NCs in transparent polymers is perspective material for applications in photonics and bio-imaging, thus investigation of their light-emitting properties is important. While NCs in conductive polymers attracts considerable attention due to...
The effect of plasmonic nanoparticles (NPs) on Raman spectra and underlying structural changes in thin chalcogenide films are investigated. As2S3 and Se films with a thickness of several tens of nanometers were deposited by thermal sputtering for comparison on ordinary glass and SERS substrates based on arrays of gold nanostructures. Films on glass are practically not detectable by Raman...
One of the trends for the future of renewable energy is the use of materials that can combine photovoltaic and thermoelectric properties in hybrid solar cells. These materials should also fulfill a number of other requirements. For instance, they should have a bandgap suitable for photovoltaics and constituent elements should be abundant and non-toxic. All these requirements are covered by the...
