نتایج جستجو برای: si 2
تعداد نتایج: 2581648 فیلتر نتایج به سال:
Let Sg be a general prime K3 surface in IP g of genus g ≥ 3 or a general double cover of IP 2 ramified along a sextic curve for g = 2 and Si,g its ith Veronese embedding. In this article we compute the corank of the Gaussian map ΦOSi,g (1) : ∧2 H(Si,g,OSi,g(1)) → H (Si,g,Ω 1 Si,g (2)) for i ≥ 2, g ≥ 2 and i = 1, g ≥ 17. The main idea is to reduce the surjectivity of ΦOSi,g (1) to an application...
Combining two indirect-gap materials-with different electronic and optical gaps-to create a direct gap material represents an ongoing theoretical challenge with potentially rewarding practical implications, such as optoelectronics integration on a single wafer. We provide an unexpected solution to this classic problem, by spatially melding two indirect-gap materials (Si and Ge) into one strongl...
Contents: SI Table 1: Primer and capture probe sequences SI Fig. 1: Evolution of the measured drag force with the size of the optically trapped array of beads SI Fig. 2: Evolution of the time-averaged power delivered to each bead as a function of the array size and evolution of the maximum array size with increasing input power SI Fig. 2: Fluorescence absorption and emission spectra for...
Using Auger Electron Spectroscopy (AES), Scanning Tunneling Microscopy/Spectroscopy (STM/STS) and Low Energy Electron Diffraction (LEED), we report an in-situ study of amorphous magnesium silicide (Mg2Si) ultra-thin films grown by thermally enhanced solid-phase reaction of few Mg monolayers deposited at room temperature (RT) on a Si(100) surface. Silicidation of magnesium films can be achieved ...
We present a systematic study of the interaction between a silicon tip and a reconstructed Si(100)2 × 1 surface by means of total energy calculations using density functional theory. We perform geometry optimization to obtain the reconstructed Si surface using the local density approximation and the generalized gradient approximation methods and compare our results with those obtained experimen...
The theory of tunneling and resonant tunneling is reviewed. Experimental justification of this theory was provided by an InP-based RTD with room-temperature PVR = 12. Its valley current was well-modeled as the sum of thermionic emission through the second resonance and a temperature-independent scattering/defect component. ZnS and CaF2 were experimentally considered as epitaxial barrier materia...
Single crystals of intermediate valent EuPd$_2$Si$_2$ were grown from an Eu-rich melt by the Bridgman as well Czochralski technique. The chemical and structural characterization extracted single crystalline Czochralski-grown specimen yielded a slight variation Si-Pd ratio along growth direction confirms existence finite Eu(Pd$_{1-m}$Si$_m$)$_2$ homogeneity range. thorough physical carried out o...
When triisobutylaluminum (AliBu(3)) is added to solutions containing methylaluminoxane (MAO) and rac-[Me(2)Si(ind)(2)ZrCl(2)] (ind: indenyl) in C(6)D(6), NMR spectra show that methyl-bridged mixed-alkylaluminum dimers Al(mu-Me)(2)Me(4-x)iBu(x) predominate. These dimers react with MAO under partial transfer of isobutyl groups and induce a conversion of the initially prevailing cationic trimethyl...
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