http://dspace.nbuv.gov.ua:80/handle/123456789/114475 2026-04-24T09:22:31Z 2026-04-24T09:22:31Z Lozovski, V. Lysenko, V. Piatnytsia, V. Spivak, M. http://dspace.nbuv.gov.ua:80/handle/123456789/118733 2017-06-01T00:05:11Z 2012-01-01T00:00:00Z

Interaction between two nonpoint nanoparticles: Implementation to biology and medicine Lozovski, V.; Lysenko, V.; Piatnytsia, V.; Spivak, M. A new mechanism of interaction between two nanoparticles characterized by their dimensions and shape has been proposed. The mechanism is based on the local-field induced dipole momentum interaction with taking into account nonlinear polarizabilities of the particles. The dipole momentum induced in the particles has a fluctuating nature. The proposed mechanism of interparticle interaction leads to formation of both repulsive and attractive parts having the minimum at the distance between the particles close to their linear dimensions. The profile and strength of the potential depend both on dimensions and shapes of the particles as well as on their mutual orientation. Implementation of the discussed interaction conception to biology and medicine has been discussed.

2012-01-01T00:00:00Z Kiselov, V.S. Borisov, Yu.S. Tryus, M. Vitusevich, S.A Pud, S. Belyaev, A.E. http://dspace.nbuv.gov.ua:80/handle/123456789/118732 2017-06-01T00:05:35Z 2012-01-01T00:00:00Z

Mechanical properties of biomorphous ceramics Kiselov, V.S.; Borisov, Yu.S.; Tryus, M.; Vitusevich, S.A; Pud, S.; Belyaev, A.E. Mechanical properties: The Vickers hardness and bending strength of porous biomorphic SiC (bioSiC) ceramics fabricated from different natural hardwoods were investigated. It has been found that these parameters are highly dependent on the geometrical densities of ceramics, and Vickers hardness values can be well described using the Ryskevitch-type equation. It has been shown that the data of geometrical density bio-SiC ceramics can be used to estimate mechanical parameters such as bending strength. Materials with advanced properties appropriate for surgical applications are being designed. Further ways to improve the mechanical properties of ceramics and ceramic products have been discussed

2012-01-01T00:00:00Z Olenych, І.B. http://dspace.nbuv.gov.ua:80/handle/123456789/118731 2017-06-01T00:04:57Z 2012-01-01T00:00:00Z

Electrical and photoelectrical properties of iodine modified porous silicon on silicon substrates Olenych, І.B. Current-voltage characteristics, spectral dependences of photovoltage and short-circuit current of the structures based on porous silicon at adsorption of iodine molecules are presented. It is revealed widening the spectral range of photosensitivity in the samples in short-wavelength range as compared with that of single crystal silicon. Kinetics of the photovoltage response inherent to the porous silicon-silicon structures has been investigated. The results are explained in the frame of qualitative model that involves formation of p-n-transitions in these structures as a result of inversion of the conductivity type in porous silicon nanocrystals under the influence of adsorption of molecular iodine

2012-01-01T00:00:00Z Kopyshinsky, A.V. Zelensky, S.E. Gomon, E.A. Rozouvan, S.G. Kolesnik, A.S. http://dspace.nbuv.gov.ua:80/handle/123456789/118730 2017-06-01T00:05:12Z 2012-01-01T00:00:00Z

Laser-induced incandescence of silicon surface under 1064-nm excitation Kopyshinsky, A.V.; Zelensky, S.E.; Gomon, E.A.; Rozouvan, S.G.; Kolesnik, A.S. Laser-induced incandescence (LII) of silicon surface is investigated under the excitation by a Q-switched YAG:Nd laser. With the increase of laser irradiation dose, the increase of LII signal is observed, which is attended by visible changes of the surface geometry. The anomalous behavior of the parameter of non-linearity of LII is observed with the increase of laser excitation power.

2012-01-01T00:00:00Z