559 research outputs found

    Taking into Account the Increase in the Dye Molecules Absorptivity in Modeling of Graetzel Solar Cell with Metallic Nanoparticles

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    Using a model developed by Professor Kucherenko M.G. a mathematical description of the effect of metal nanoparticles on the absorbing capacity of organic dye molecules in Graetzel cells was carried out. The enhanced absorption spectra of the dyenanoparticle system and the current-voltage characteristics of the investigated solar cells are calculated

    Sociology — is my choice

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    О выборе профессии и роли семейных традиций в этом выборе.On the choice of profession and the role of family tradition in this choice

    Calculation of Field Characteristics in Periodic Nanostructures from Composite Elements with Activated Plasmon Modes

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    Modeling of the electromagnetic field of the optical frequency in periodic structures composed of parallel conducting nanorods as well as composite spherical nanoparticles with an excitonogenic envelope in hexagonal 2d-lattices - in the quasistatic approximation and the FDTD method. The qualitative agreement of these approaches is shown when calculating field characteristics in lattices of cylindrical elements

    Surface modification of field emission cathodes made of artificial carbon-based material

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    While the field emission acts at the technical vacuum level conditions (10-5 Pa) and electrons emitted from cathode, the ion bombardment exists and continuously modifies the cathode surface. Using X-ray photoelectron spectroscopy (XPS) we studied the electronic structure of thin surface layer of artificial carbon-based materials (ACB) used as field emission cathodes (FEC). The research resulted in the spectra of the samples B-1300, B-1500, B-1900. After spectra processing features analysis shows the change in type of hybridization of the original material. This change is supported by three characteristic spectral features: asymmetry of the core levels spectrum lines change, the satellite structure transformation, Auger-line and modification. So the initial material had sp2 type of hybridization, the spectra show that in thin surface layer a new phase with sp3-hybridization exists and we can conclude formation of nanoclusters with diamond-phase in thin surface layer of cathode. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

    Some aspects of using cuckoo search in the learning and in the management of robots

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    The article is viewing cuckoo search and its nature, describing in detail algorithm itself, also provide an example of using a cuckoo search for the test functionВ статье рассматривается алгоритм кукушки и его природа, подробно описывается сам алгоритм, также приводится пример использования алгоритма кукушки на тестовой функци

    XPS studies on surfaces of field-emission cathodes of artificial carbon materials

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    The electronic structure of the surface layer of artificial carbon-based materials operated as field emission cathodes was studied using x-ray photoelectron spectroscopy. Samples B-1300, B-1500, and B-1900 were investigated. An analysis of the spectra showed an alteration of the hybridization of atoms in the original material, which suggested the formation of diamond-like inclusions on the sample surface. © 2013 Springer Science+Business Media New York
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