排序方式: 共有20条查询结果,搜索用时 363 毫秒
1.
S. A. Bulgakova A. I. Mashin I. A. Kazantseva D. E. Kashtanov M. M. Jones G. S. Tsepkov A. V. Korobkov A. V. Nezhdanov 《Russian Journal of Applied Chemistry》2008,81(8):1446-1451
Polymer films with a dispersed liquid crystal were prepared by photopolymerization of (meth)acrylic monomers. The electrooptical properties of these films were studied. The influence exerted by the composition of the monomer mixture, cross-linking agents, and chain-transfer agent on the liquid crystal drop size and on the transmission of the polymer-liquid crystal films was examined. 相似文献
2.
A. A. Logunov A. I. Mashin S. V. Zelentsov M. A. Kudryashov A. V. Nezhdanov A. S. Ryabov G. Chidichimo G. De Filpo 《High Energy Chemistry》2016,50(3):189-191
A method for fabricating form composite photoanodes based on titanium dioxide and phosphotungstic acid has been developed. The introduction of the polyoxometalate into a porous titanium dioxide layer increases the photoconversion efficiency of dye-sensitized solar cells and affects characteristics such as open-circuit voltage and short-circuit current. 相似文献
3.
D. O. Filatov D. A. Antonov S. Yu. Zubkov A. V. Nezhdanov A. I. Mashin 《Bulletin of the Russian Academy of Sciences: Physics》2011,75(1):12-16
The morphology, electronic structure, and optical properties of self-assembled silicon nanostructures grown on the surface
of Highly Oriented Pyrolytic Graphite (HOPG) by molecular beam epitaxy were studied by ultra high vacuum (UHV) scanning tunneling
microscopy (STM) and X-ray photoemission spectroscopy (XPS) in situ, and by Raman spectroscopy ex situ. At coverages of less
than 1 monolayer (ML), the formation of monolayered silicon nanoislands with an atomic structure similar to that of graphene
was observed. 相似文献
4.
Leonid Mochalov Aleksey Nezhdanov Askold Strikovskiy Mikhail Gushin Giuseppe Chidichimo Giovanni De Filpo Aleksandr Mashin 《Optical and Quantum Electronics》2017,49(8):274
AsxTe100?x chalcogenide films (where x = 30–80 at.%) were synthesized via direct interaction of arsenic and tellurium vapors into low-temperature non-equilibrium RF (40 MHz) plasma discharge at reduced pressure. Phase and structural evolution of AsxTe100?x films were implemented by gradual changing of the ratio of the initial substances in the gas phase. The dependence of the films structure, surface morphology and optical properties on phase and chemical content has been studied. 相似文献
5.
S. V. Siprova A. I. Mashin G. Chidichimo G. De Filpo A. V. Korobkov A. V. Nezhdanov 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2009,3(5):686-690
Polymer Dispersed Liquid Crystal (PDLC) films are prepared by the polymerization induced method of phase separation. Initial
configurations of the director of liquid crystal droplets inside the films are found using a polarized microscope. The effect
of an electric field on the alignment structure of droplets is studied. Two mechanisms of droplet orientation by the electric
field are determined as smooth and spontaneous. The processes observed are compared with the results of electro-optical studies. 相似文献
6.
Romashkin A. V. Murzanev A. A. Kiselev A. M. Korytin A. I. Kudryashov M. A. Nezhdanov A. V. Mochalov L. A. Mashin A. I. Stepanov A. N. 《Optics and Spectroscopy》2018,124(5):741-747
A thin film of As50S50 chalcogenide glass modified by femtosecond laser radiation at a wavelength of 800 nm has been studied. The character of the modification has been analyzed by interferometry, atomic-force microscopy, and Raman spectroscopy. The relationship between a change in the refractive index upon the sample modification and structural changes in the glass network is determined.
相似文献7.
Giovanni De Filpo Patrizia Formoso Alexander I. Mashin Aleksey Nezhdanov Leonid Mochalov Fiore P. Nicoletta 《Liquid crystals》2018,45(5):721-727
Nanoparticle dispersions in liquid crystalline materials at low concentrations allow both investigating the formation of defects in liquid crystal (LC) and enhancing the light-scattering properties of LC optical devices. Reverse mode LC dispersions are LC devices, which look like transparent in their OFF state, when no electric field is applied, and opaque in their ON state. In this paper, a new reverse mode device, formed by a dispersion of a LC mixture in a silica nanoparticle crosslinked network, is presented. The morphology and the electro-optical properties of these silica nanoparticle/LC composites were investigated for two different LC mixtures with a negative dielectric anisotropy. The observed transmittances and relaxation times were found to depend strongly on the silica amount and chemical–physical properties of LC used in the sample preparation. 相似文献
8.
L. A. Mochalov R. A. Kornev A. V. Nezhdanov A. I. Mashin A. S. Lobanov A. V. Kostrov V. M. Vorotyntsev A. V. Vorotyntsev 《Plasma Chemistry and Plasma Processing》2016,36(3):849-856
Monochlorosilane/argon/hydrogen (SiH3Cl-Ar-H2) mixture of different ratios was investigated from the point of PECVD application. RF capacitive plasma discharge of 40.68 MHz frequency was used. The process of deposition was studied by optical emission spectroscopy. The silicon thin films of different phase composition were obtained. The thin films were characterized by Raman-spectroscopy, atomic force microscopy, and secondary ion mass spectrometry. The exhaust gas mixture was analyzed by IR-spectroscopy in outlet of the reactor during PECVD process. The chemical mechanism for the deposition process was also proposed. 相似文献
9.
M. A. Kudryashov A. I. Mashin A. V. Nezhdanov A. A. Logunov T. A. Gracheva T. A. Kuz’micheva G. Chidichimo G. De Filpo 《Technical Physics》2016,61(11):1684-1688
Small-angle X-ray scattering is used to prove the formation of silver nanoparticles with sizes of 5–11 nm in siver/polyacrylonitrile nanocomposites synthesized via photopolymerization of a mixture containing silver, acrylonitrile, and photoinitiator. Optical spectra of nanocomposites obtained under different conditions are studied. The absorption spectra exhibit maxima at wavelengths of 420–450 nm related to the surface plasmon resonance of silver nanoparticles. IR spectra of the nanocomposites prove the formation of polyacrylonitrile in the course of the photopolymerization of monomer. The formation of metal nanoimpurities in polymer matrix leads to an increase in the intensity of photoluminescence and Raman scattering of polyacrylonitrile. 相似文献
10.
Mikhaylov A. N. Belov A. I. Kostyuk A. B. Zhavoronkov I. Yu. Korolev D. S. Nezhdanov A. V. Ershov A. V. Guseinov D. V. Gracheva T. A. Malygin N. D. Demidov E. S. Tetelbaum D. I. 《Physics of the Solid State》2012,54(2):368-382
Physics of the Solid State - A comprehensive comparative study of SiO2 and Al2O3 oxide layers with Si nanocrystals formed by Si+ ion implantation and high-temperature annealing has been performed.... 相似文献