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101.
Aleksandra Zapadinskaya 《Central European Journal of Mathematics》2011,9(2):356-363
We prove a dimension compression estimate for homeomorphic mappings of exponentially integrable distortion via a modulus of
continuity result by D. Herron and P. Koskela [Mappings of finite distortion: gauge dimension of generalized quasicircles,
Illinois J. Math., 2003, 47(4), 1243–1259]. The essential sharpness of our estimate is demonstrated by an example. 相似文献
102.
Leszek A. Dobrzański Marek Szindler Aleksandra Drygała Magdalena M. Szindler 《Central European Journal of Physics》2014,12(9):666-670
The paper presents the possibility of using Al2O3 antireflection coatings deposited by atomic layer deposition ALD. The ALD method is based on alternate pulsing of the precursor gases and vapors onto the substrate surface and then chemisorption or surface reaction of the precursors. The reactor is purged with an inert gas between the precursor pulses. The Al2O3 thin film in structure of the finished solar cells can play the role of both antireflection and passivation layer which will simplify the process. For this research 50×50 mm monocrystalline silicon solar cells with one bus bar have been used. The metallic contacts were prepared by screen printing method and Al2O3 antireflection coating by ALD method. Results and their analysis allow to conclude that the Al2O3 antireflection coating deposited by ALD has a significant impact on the optoelectronic properties of the silicon solar cell. For about 80 nm of Al2O3 the best results were obtained in the wavelength range of 400 to 800 nm reducing the reflection to less than 1%. The difference in the solar cells efficiency between with and without antireflection coating was 5.28%. The LBIC scan measurements may indicate a positive influence of the thin film Al2O3 on the bulk passivation of the silicon. 相似文献
103.
104.
O. V. Borisova M. Yu. Zaremski V. B. Golubev O. V. Borisov L. Billon 《Polymer Science Series B》2011,53(7-8):409-411
With the use of the competitive inhibition method and ESR spectroscopy, it is shown that, in pseudoliving radical polymerization, the rate constant of decomposition of PS and poly(acrylic acid) adducts with nitroxide radicals significantly increases as the polarity of a medium increases. This phenomenon opens a new approach to the activation of chains in nitroxide-mediated polymerization. 相似文献
105.
106.
The results of calculations of the total (lateral and vertical) relaxation of the (001) and (111) copper surfaces in the presence
of a small cluster of cobalt adatoms, local vibrational density of states and polarizations of these states are presented.
The calculations were performed using the atomic interaction potentials in a tight binding approximation. An analysis of the
results obtained showed that the presence of a cobalt dimer gives rise to modification of the vibrational states of the copper
surface and generation of new modes localized both on the adatoms of the cluster and the surface atoms of the substrate. The
revealed anisotropy of surface relaxation along [001] results in deformation of atomic bonding and splitting of the vibrational
modes of the dimer. The lifetimes of the vibrational states of the dimer are found to be nearly equal for both surfaces under
study, with a frequency shift being however observed.
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp.73–78, December, 2008. 相似文献
107.
108.
109.
G. G. Rusina S. D. Borisova S. V. Eremeev I. Yu. Sklyadneva E. V. Chulkov 《Russian Physics Journal》2004,47(11):1147-1153
The vibrational spectra on the $Al\,(111) - (\sqrt 3 \times \sqrt 3 )R30^\circ - Na$ surface are calculated by the embedded atom method. Surface relaxation, dispersion of surface phonons, local density of surface states, and polarization of vibrational modes of adatoms and substrate atoms are discussed in the present paper. The theoretical results obtained agree well with the available experimental data and can be used for their interpretation. 相似文献
110.
Using the all-optical poling method, we observed the formation of a surface-relief grating (SRG) in an amorphous polymer film containing azo dye molecules in side chain positions. The experiment consists of a seeding-type process. We used a recently described experimental setup that permits a periodic nonlinear pattern to be produced by the index dispersion of glass. The particular configuration permits photoinduced translation diffusion of the azo chromophores to be observed as the origin of the SRG formation. Analyses of the gratings recorded by use of s (TE) and p (TM) polarization of the writing beams are conducted by atomic-force microscopy. The effect is attributed to mass transport from regions of high isomerization activity to regions of lower activity. 相似文献