Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Vitali Parkhutik"'
Autor:
B. M. Dzhagarov, J. M. Albella, J. Ovejero, Vitali Parkhutik, V. L. Bolotin, Vladimir S. Chirvony, Eugenia Matveeva
Publikováno v:
physica status solidi (a). 204:1523-1527
A study of luminescence properties of water-soluble and hydrophobic porphyrin and chlorin molecules immobilized in oxidized (i.e. non-luminescent) and as-prepared (i.e. luminescent) porous silicon (porSi) layers is carried out. It is found that the o
Publikováno v:
physica status solidi c. 4:2136-2140
This work aims at studying of electrochemical oxidation of porous silicon (PSi) and its behaviour in simulated body fluid (SBF). Continuing electrochemical oxidation of PSi introduces gradual changes in morphology of the porous structure and composit
Autor:
Eugenia Matveeva, Vitali Parkhutik
Publikováno v:
Electrochimica Acta. 51:720-724
A thin film of yttrium Y (150 nm) protected by a 6 nm coating of nickel Ni on a glass substrate was completely hydrogenated in a 1 M NaOH electrolyte at a constant negative current until the transparent Y tri-hydride phase was achieved and hydrogen g
Publikováno v:
physica status solidi (a). 202:1374-1379
Here we report new data on mechanical properties of porous silicon films that support a model where both electrochemistry of local dissolution of silicon and mechanical stress factors are playing roles. Using micro-Raman spectroscopy allowed us to es
Publikováno v:
physica status solidi (a). 202:1576-1580
We report here a curious effect of spontaneous fracturing of the silicon layers formed in galvanostatic conditions at medium and high current densities. Instead of formation of homogeneous p-Si layer as at low currents, a stack of thin layers is form
Publikováno v:
physica status solidi (a). 202:1407-1410
Scanning probe microscopy is presently a useful tool to study a morphology of porous semiconductors. However, it serves to visualize existing roughness features of porous samples rather then to obtain some analytical data on shape, diameter and other
Publikováno v:
physica status solidi (a). 202:1586-1591
This work studies the influence of experimental conditions on the occurrence and development of oscillations of the open-circuit potential (OCP) of silicon immersed in aqueous solution of 0.01 M CUSO 4 + 0.06 M HF. The oscillations are very regular a
Publikováno v:
physica status solidi (c). 2:3399-3403
Here we describe a new algorithm of processing the optical spectra acquired from thin film samples, with emphasis to the infrared reflection-absorption spectra of porous silicon layers. A software package ProSpect-2 makes possible to remove oscillato
Publikováno v:
Journal of Applied Polymer Science. 94:1752-1758
We developed a simple method for the deposition of a uniform layer of polyaniline (PANI) on the surface of acrylonitrile–butadiene–styrene (ABS). The method consisted of two steps: the soaking of ABS samples in a water-based aniline solution stab
Autor:
Sergey V. Gaponenko, I. S. Molchan, Vitali Parkhutik, Andrey A. Lutich, N. V. Gaponenko, Vitalii A. Sokol
Publikováno v:
Nano Letters. 4:1755-1758
Similar to spontaneous emission of photons and inelastic (Raman) scattering, elastic (Rayleigh) scattering of light is controlled by spectral and spatial distribution of photon density of states, DOS (density of electromagnetic modes). However, to da