Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Petro M. Tomchuk"'
Autor:
Petro M. Tomchuk, V. N. Starkov
A theory for the averaged optical characteristics of an ensemble of metal nanoparticles with different shapes has been developed. The theory is applicable both for the nanoparticle size at which the optical conductivity of the particle is a scalar an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b3471dd0b33e3b6513fc7a5f5653425
http://arxiv.org/abs/1901.04793
http://arxiv.org/abs/1901.04793
Autor:
Danylo Butenko, Petro M. Tomchuk
For the metallic nanoparticles, smaller than the free electron path, an impact of the particle’s surface on the nonlocal effects emerging is shown. Light-induced current inside the particle begins to depend on the spatial derivatives of the field t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00133be90484c4e3ea7cedee669a7859
Autor:
D.V. Butenko, Petro M. Tomchuk
Publikováno v:
Surface Science. 606:1892-1898
In the framework of kinetic approach we develop a theory for light scattering by ellipsoidal metallic nanoparticles whose dimensions are less than those of a free electron path. In this case, the surface of the particle starts to play a dominant role
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e6d1f67df34c8893d29e64f1e142722
https://doi.org/10.1016/j.susc.2012.07.035
https://doi.org/10.1016/j.susc.2012.07.035
Publikováno v:
physica status solidi (b). 250:344-351
We present results of experimental studies of the effect of weak magnetic field (H = 300 Oe) on the intensity of terahertz radiation (λ = 100 µm) of hot electrons from n-Ge at the near liquid helium temperatures (T ≈ 5 K) when both electric and m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8767518ed115d260d3e9284fbbe74c9d
https://doi.org/10.1002/pssb.201248316
https://doi.org/10.1002/pssb.201248316
Autor:
Petro M. Tomchuk, Volodymyr V. Kulish
Publikováno v:
Particle & Particle Systems Characterization. 29:238-252
We investigate optical properties of nanoshells (small composite clusters composed of a dielectric core and a metal shell; contribution of the shell dominates in the optical properties of the whole cluster) far from plasmon resonance. In particular,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c419420051201ee2270f555f389aeeee
https://doi.org/10.1002/ppsc.200900063
https://doi.org/10.1002/ppsc.200900063
Autor:
N. I. Grigorchuk, Petro M. Tomchuk
Publikováno v:
The European Physical Journal B. 80:371-378
The theory of the photo-acoustical effect caused by a laser action on metal nanoclusters embedded in a dielectric matrix is build. The energy absorbed by clusters propagates through the dielectric matrix and generates the sound waves in it via the th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::935b1f4ab7789da307c7e5175ef76da7
https://doi.org/10.1140/epjb/e2011-20005-6
https://doi.org/10.1140/epjb/e2011-20005-6
Publikováno v:
Surface Science. 603:3267-3274
The theory of sound generation and heat transfer in matrix-embedded metal nanoparticles under ultra-short laser irradiation has been developed. The shape and time dependence of acoustic waves generated by a sharp change in the pressure of electrons h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81690b280d12d38b97ff22ee3b414ff3
https://doi.org/10.1016/j.susc.2009.09.012
https://doi.org/10.1016/j.susc.2009.09.012
Autor:
N. I. Grigorchuk, Petro M. Tomchuk
Publikováno v:
Low Temperature Physics. 34:458-465
A theory is developed which permits calculation of the energy absorbed by aspherical particles of small size under irradiation by double ultrashort laser pulses of specified duration, in the excitation region of surface plasmons (Mie resonances). For
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60c2bdfeb034b7cfcbb89c17f3ff51c1
https://doi.org/10.1063/1.2920176
https://doi.org/10.1063/1.2920176
Autor:
Volodymyr V. Kulish, Petro M. Tomchuk
Publikováno v:
Surface Science. 602:1045-1052
We investigate optical properties of small composite clusters composed of a dielectric core and a metal shell (contribution of the shell dominates in the optical properties of the whole cluster). In particular, nanoshells and metal nanotubes are cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b815dae05bbfe226731b6a3993407cea
https://doi.org/10.1016/j.susc.2007.12.030
https://doi.org/10.1016/j.susc.2007.12.030
Autor:
Petro M. Tomchuk, Y. Bilotsky
Publikováno v:
Surface Science. 602:383-390
The size dependence of electron-lattice energy exchange in nanoparticles has been studied. Both surface and bulk energy exchange parameters are examined and it is demonstrated that the bulk energy exchange has non-monotonic oscillations versus size o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7b6985edd956e93528b5a1072635ae1
https://doi.org/10.1016/j.susc.2007.10.023
https://doi.org/10.1016/j.susc.2007.10.023