2304-9782, 2618-8686, 2405-7223 1 73 2009 1-130

CHR RUS 7-9 Without author On the occasion of the 80-th birthday of Yu.S. Vasil’ev, a member of the Russian Academy of Sciences, the President of the SPbSPU https://physmath.spbstu.ru/article/2009.2.1/

RAR RUS 7-17 Peter the Great St. Petersburg Polytechnic University Yatsyshin Peter

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

M-5766-2013 57192222016 0000-0002-3584-4583 Peter the Great St. Petersburg Polytechnic University Ivanov Vadim ivanov_vk@spbstu.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Polozkov Roman polozkov@tuexph.stu.neva.ru 7003387326 0000-0003-1602-6144 MBN Research Center at Frankfurt Innovation Center of Biotechnology Solov'yov Andrei solovyov@mbnresearch.com

3 Altenhöferallee, Frankfurt am Main, 60438, Germany

The structure of elec- tron-positron clusters. Hartree – Fock approximation The electron-positron cluster, a new physical object is investigated. In the metallic phase clusters considered consist of equal numbers of delocalized electrons and positrons bounded by attractive Coulomb potential and the potential of particles mutual polarization. We focus on investigating the cluster properties dependent on their size (up to one hundred electron-positron pairs). Our calculations have been carried out within the Hartree - Fock approximation in which clusters are bounded by nonlocal exchange interactions. The set of the basis wave functions has been obtained by means of the self-consistent procedure taking into account the interactions between cluster particles of both similar and opposite charges. 538.915; 538.954 cluster many-body problem Hartree – Fock approximation jellium model optimized jellium model many electron correlations https://physmath.spbstu.ru/article/2009.2.2/

RAR RUS 17-28 0000-0003-1457-8236 Peter the Great St. Petersburg Polytechnic University Ipatov Andrey andrei_ipatov@mail.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Nonlinear resonance photoabsorption by metallic clusters in an intense laser field A theoretical study of non-linear effects during the interaction of microscopic metallic clusters with the intense laser field is presented. The theoretical model, based on the separation of motion of the center of mass and internal excitations, is proposed. The mechanism of the resonance line shift in a nonlinear regime is investigated. The resonance photoabsorption cross sections and the angular distributions for the photoelectrons are calculated for various laser field intensities. 539.123; 538.12.01 resonance photoabsorption nonlinear effects microscopic clusters laser field https://physmath.spbstu.ru/article/2009.2.3/

RAR RUS 29-35 0000-0001-9446-4233 Peter the Great St. Petersburg Polytechnic University Valuyeva Svetlana

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

0000-0002-1034-6713 Institute of Macromolecular Compounds – Branch of Petersburg Nuclear Physics Institute named by B. P. Konstantinov of National Research Centre “Kurchatov Institute" Borovikova Lyudmila Self-organization and morfological characteristics of the selenium-containing nanostructures on the basis of strong polyacids This paper represents the results of the study, carried out by the methods of molecular optics, of nanostructures formed in a process of reduction of ionic selenium in selenite-ascorbate redox system in aqueous solutions of high molecular polymeric stabilizers of anion type. We conclude that due to adsorption of macromolecules of strong acids on the nanoparticles of selenium the spherical nanoparticles of similar morphological types with similar dimensions, densities and widths of a polymer shell are formed. 535.33/34; 539.193/196 nanostructures molecular optics ionic selenium redox system high-molecular stabi- lizers https://physmath.spbstu.ru/article/2009.2.4/

RAR RUS 35-42 Stepanova Tamara t_stepanova2005@mail.ru Artamonova Alena E-4237-2014 12784708700 0000-0001-9050-4453 Peter the Great St. Petersburg Polytechnic University Kapralova Victoria kapralova2006@yandex.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Dipole moment and structure of cellobiose in polar solvents with hydroden bond The dipole moments of cellobiosein dilute dimethylacetamide and aqueous solutions have been studied. The influence of the temperature and the nature of a solvent on a value of the molecular dipole moment of cellobiose were determined. The obtained data clarify the effects of hydrogen bonds on the molecular conformation of cellobiose and on the structure of solvates. 539.193/194; 544.163.2 dielectric permittivity dipole moment solution solvate hydrogen bond cellobiose dimethylacetamide water https://physmath.spbstu.ru/article/2009.2.5/

RAR RUS 43-48 Bereznyak Anatoly AlGaN/GaN heterojunction quality monitoring with large-area heterostructure field-effect transistor A new method of AlGaN/GaN heterojunction quality monitoring is proposed for manufacturing of powerful heterostructure field-effect transistors (HFETs). 539.2 method measurement algan/gan heterojunction heterostructure hfet quality https://physmath.spbstu.ru/article/2009.2.6/

RAR RUS 48-59 Peter the Great St. Petersburg Polytechnic University Zelikman Mark marzelik@mail.ru Line vortex pinning and their spacing in a 3D ordered Josephson medium The method of solution of the system of finite-difference equations for interacting line vortices in a three-dimensional ordered Josephson medium is proposed. The critical values of the pinning parameter at which two vortices keep their given spacing and the maximum pinning forces for different configurations are calculated. It is shown that the pinning force decreases near the parallel vortices and increases near the antiparallel ones. 538.945 pinning Josephson medium line parallel and antiparallel vortices critical value https://physmath.spbstu.ru/article/2009.2.7/

RAR RUS 59-64 Gerchikov Leonid lgerchikov@rambler.ru Mamaev Yuri mamaev@spes.stu.neva.ru Yashin Yuri Kuz’michev Vitaly Spin polarized electron source based on strained AlInGaAs/AlGaAs superlattice The optimized AlInGaAs/AlGaAs superlattice composition with strained quantum wells has been developed for the polarized electron source (application). The choice of hetero-layer composition and thickness is based on the calculations of superlattice band energy spectrum, photoabsorption spectrum and transport properties. The electron emission from the developed photocathodes demonstrates the maximal polarization to be above 90 %. 538.97 polarization photoemission superlattice https://physmath.spbstu.ru/article/2009.2.8/

RAR RUS 64-71 Saint Petersburg Electrotechnical University LETI Aleksandrov Oleg

Russia, 197376, St.Petersburg, Professor Popov street, 5

Peter the Great St. Petersburg Polytechnic University Kozlovski Vitaly vkozlovski@phmf.spbstu.ru Diffusion-reaction model of the interaction of sili- cide-forming metal with the silicon carbide A quantitative model of the interfacial interaction of a silicide-forming metal - nickel with single-crystal silicon carbide has been developed on the basis of interdiffusion of components with account of the Kirkendall effect and the volume reactions of the formation of silicides. The model describes satisfactorily the basic features of component redistribution in the system Ni-SiC under bombardment by protons at elevated temperatures. 539.2 silicide-forming metal silicon carbide ohmic contacts diffusion equations https://physmath.spbstu.ru/article/2009.2.9/

RAR RUS 71-77 Komarova Olga olik-komarik@rambler.ru Martynova Olga olya218@yandex.ru Peter the Great St. Petersburg Polytechnic University Ageev Nikolay

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Peter the Great St. Petersburg Polytechnic University Gasumyants Vitaly vgas@rphf.spbstu.ru Modification of the transport coefficients under calcium doping in the Y1-xCaxBa1,5La0,5Cu3Oy system The results of a comparative study of the temperature and concentration dependences of the resistivity, thermo-emf, Hall and Nernst - Ettingshausen coefficients in the Y1-xCaxBa1,5La0,5Cu3Oy(x=0,4) system are presented. On the basis of narrow-band model the complex quantitative analysis of the obtained experimental data is performed; the parameters of the band spectrum and charge-carrier system in the investigated samples are determined; the character of their variations with increasing calcium content is analysed. 538.945 high-temperature superconductors critical temperature electron transport phenomena band-spectrum doping https://physmath.spbstu.ru/article/2009.2.10/

RAR RUS 77-80 Peter the Great St. Petersburg Polytechnic University Kuzmin Sergey

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Peter the Great St. Petersburg Polytechnic University Sudar Nikolai sudar53@mail.ru The influence of the substrate material on the transitions dielectric–conductor in thin films of polyaniline The peculiarities of the dielectric - conductor transition in the thin films of polyaniline are considered. It is shown that such a transition in thin films can occur at various рН values of the solution depending on material of a substrate. 537.226; 537.311.32; 538.956 dielectrics conductive polymers polyaniline films https://physmath.spbstu.ru/article/2009.2.11/

RAR RUS 80-85 Ioffe Physical Technical Institute of the Russian Academy of Sciences Fedotov Vladimir

Russia, 194021, St.Petersburg, Polytechnicheskaya, 26

Ioffe Physical Technical Institute of the Russian Academy of Sciences Sel’kin A.

Russia, 194021, St.Petersburg, Polytechnicheskaya, 26

Resonant Bragg reflection of light from 3D photonic crystals in the multiple-wave diffraction regime The propagation features of electromagnetic waves in 3D photonic crystals (PhC) possessing high dielectric contrast are studied with an account of reflection and refraction of light for the case when the multiple-wave Bragg diffraction regime is of great importance. Comparison of measured and calculated reflectance contours with the energy spectrum of eigenmodes of spatially finite PhC is performed in details. The doublet structure of the Bragg reflectance peaks appeared over some range of incidence angles is shown to be shaped due to the additional eigenmodes which are resonantly excited by diffraction of light on the crystal planes inclined to the lateral ones. 538.97 photonic crystals multiple diffraction bragg reflection https://physmath.spbstu.ru/article/2009.2.12/

RAR RUS 86-93 Jordan Vladimir jordan@phys.asu.ru Lukyanova Yulia Mershalov Denis The analysis of radiant heat exchange mechanism and modelling of evolution of ultradispersive high-porous structure of SHS-materials in the course of SH-synthesis The role of radiation heat exchange mechanism in the process of SH-synthesis of ultradispersive high-porous structure of SHS-materials is considered; the technique of structure modeling for particles packing in a mixture of metal powders and their evolution in the process of SH-synthesis is represented. The estimations of of porosity for modeled structures of particle mixtures are confirmed by testing by means of "VideoTest" system. 539.3 analysis radiant heat exchange self-extending high-temperature synthesis (SHS) structure packing porosity modelling evolution https://physmath.spbstu.ru/article/2009.2.13/

RAR RUS 94-101 Jordan Vladimir jordan@phys.asu.ru Mershalov Denis Research of the temperature profile structure of com- bustion in the nonlinear porous medium of SH-synthesis by means of parallel calculations The mathematical model of combustion process in terms of quasilinear equation of heat conductivity with exothermal source of heat generation in the porous medium of SH-synthesis is considered; the parallel algorithm of its numerical decision is developed. Computer simulation of modes of combustion with sharpening in the nonlinear porous medium has allowed finding out dynamics of dissipative structures in the temperature profile. 548.0:535.37 combustion profile nonlinear porous medium quasilinear equation of heat conducti- vity parallel calculations https://physmath.spbstu.ru/article/2009.2.14/

RAR RUS 101-110 Open Joint Stock Company "S. I. Vavilov State Optical Institute" Onopko Daniil Higher-order finite-difference method and its application to investigation of clusters of covalent crystals The previously suggested procedure for the account of boundary conditions for clusters of covalent crystals has been realized on the basis of high-order finite-difference method. In cluster approximation the peculiarities of the electron structure and space structure of regular crystals (GaAs, Si) as well as the impurity centers (GaAs:Si, Si:P, Si:S) are studied. We consider the defect stability, its probable reconstruction and also the influence of the center charge on its stability. The reasonably good agreement with the results of experiment as well as with the conclusions of crystalline approach (expanded cell method) has been obtained. 548.0:535.37 boundary conditions for clusters of covalent crystals higher-order finite-difference method impurity centers in crystals reconstruction https://physmath.spbstu.ru/article/2009.2.15/

RAR RUS 111-114 0000-0003-0309-5917 Peter the Great St. Petersburg Polytechnic University Berdnikov Yaroslav berdnikov@spbstu.ru Golovin Alexey Spirin Denis ssdenis@mail.ru Realization of dual energy method in X-rays tomography The solution of a problem of errors minimization in X-rays tomography by means of a dual energy method is proposed. It is shown that this method allows one to determine simply the object composition and its space structure in comparison with the X-rays tomography. 539.1; 621.38 X-rays tomography dual energy method modeling https://physmath.spbstu.ru/article/2009.2.16/

RAR RUS 115-120 Seteikin Alexey Amur State University Krasnikov Ilya

Russia, 675027, Blagoveshensk, Ignatjevskye Shosse, 21

Lomonosov Moscow State University Popov Alexey

Russia, 119991, Moscow, Leninskie gory, 1

AAD-9657-2019 57197390995 Peter the Great St. Petersburg Polytechnic University Fotiadi Alexander fotiadi@rphf.spbstu.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Temperature reaction of the nanoparticle-containing biotissue caused by UV-A and UV-B irradiation On the basis of developed mathematical model of skin containing TiO2-nanoparticles (62 and 122 nm in diameter) the skin-depth-distribution of the absorbed energy density of UV-irradiation at 310 and 400 nm wavelengths has been obtained and analysed. 546.722, 546.271 nanoparticles biotissue uv-irradiation skin surface layer epidermis https://physmath.spbstu.ru/article/2009.2.17/