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Science Newsletter of the Faculty fo Physics
This is a new bulletin, which, as we hope, will bring fresh, updated information on scientific news, research activities, and related events in the life of our department to our staff members, undegraduate and graduate students, postdocs, collaborators and partners. We greatly hope that this Science Newsletter will help us to find new partners in research and shorten the way from fundamental research to applications and innovations, from our fundamental discoveries to their successful implementations in not too distant future.
XIV National School-Seminar "Wave phenomena in inhomogeneous media"
The conference papers from the School-Seminar «Waves-2014» will be submitted for publishing in the Memoirs of the Faculty of Physics journal.
2012 / 2
R e g u l a r p a p e r s
Condensed matter physics
M.S. Kotova, M.A. Dronov, I.A. Belogorokhov
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In this paper effect of resistive switch for polymer materials was observed in polystyrene containing metal micro particles Al, Zn with metal concentration close to the percolation threshold. Stable – up to 106 and fast – less than 10 ns switches were obtained. Critical voltages for switching from non-conducting to conducting state for devices with contact distances less than 1 mm did not exceed 10 V. This phenomenon makes it possible to produce memory devices with assumable future down-scaling. Hide Abstract
Biophysics and medical physics
Belousov Alexandr V.
Osipov Alexey S.
Chernyaev Alexandr P.
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In work the contribution of the heavy charged particles, formed as a result of photonuclear reactions, to the absorbed and equivalent dose created by bremsstrahlung in biological matter is investigated. The technique of an estimation of average qiality factor (QF) photoprotons is developed. The mathematical model is developed, allowing to estimate in terms of quality factor, biological action of the mixed radiation induced by bremsstrahlung. The developed model can be easily extended to other types of primary radiation. Hide Abstract
Zhalyalov Ansar Saijarovich, Panteleev Mikhail Alexandrovich
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Was experimentally investigation spatial dynamics of fibrin clot lysis in vitro. The effect of plasminogen activators (streptokinase and urokinase) on growth and lysis of fibrin clot in a reaction-diffusive system. Discovered the phenomena that the addition of plasminogen activators in therapeutic concentrations in addition fibrinolysis system actuates coagulation system, and wave of fibrinolysis starts from place of coagulation activation. Hide Abstract
Theoretical and mathematical physics
A.A. Bykov, N.N. Nefedov, A.S. Sharlo
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Drift of the internal transition layer is investigated for the pseudo-parabolic thira order equation in the heterogeneous medium in case of the contrast structure like solution. Method of the singular expansion of the decision into the series by powers of the small parameter is used. Seversl basic terms of the series for the velocity of the internal Hide Abstract
Grats Yu.V.
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The problem of self-energy of a classical charged particle in a
curved static space-time is considered. The expression for the
regularized self-energy of a scalar charge in a~$(n+1)$~--
dimensional space-time is obtained with the use of the dimensional
regularization method. The particular case of two spatial
dimensions is considered. It is shown that dimensional
regularization leads to the results which are in agreement with
the results obtained with the use of other methods of
regularization. Hide Abstract
