Si-SiO/sub 2/-Si
Metathesis of Ethylene and Trans 2 Butene over MgO Admixed WO<sub>3</sub>/SiO<sub>2</sub> Catalysts
... structure [8]. For the MgO(CP) and MgO(SV), these OH peaks were higher for the spent catalysts compared to the fresh ones. This change was not observed for the MgO(SG) in which the spent catalysts showed relatively small ...
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Electron trapping in metal-insulator-semiconductor structures on n-GaN with SiO2 and Si3N4 dielectrics
... Figure 2 displays additional C – V curves and 1 / C 2 – V ...both SiO 2 and Si 3 N 4 samples, increasing the starting dc bias V G from 0 to 6 V leads to increasing shift along the gate ...
5
Low-temperature preparation of GaN-SiO2 interfaces with low defect density. I. Two-step remote plasma-assisted oxidation-deposition process
... When SiO 2 thin films were deposited on Si, Ge, GaAs, and CdTe using remote plasma-enhanced chemical vapor deposition ( RPECVD ) , the substrates were slightly consumed by plasma-activated species ...
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Development of a capacitive chemical sensor based on Co(II)-phthalocyanine acrylate-polymer/HfO 2/SiO2 /Si for detection of perchlorate
... perchlorate concentrations. We note in Fig. 5 the presence of two slopes: slope (1) of about 17 mV decade −1 indicates a very low detection of perchlorate in low concentrations and slope (2) of about 47 mV decade ...
7
Oxidized porous silicon for localized formation of SOI active regions
... Figure 4.5: Block diagram representation of basic principles of Eltran process which uses a porous silicon release layer used for wafer-jet separation. .......................... 34 Figure 4.6: Selective etching ...
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Enhancement of Optical Gain and Amplified Spontaneous Emission due to waveguide geometry in the conjugated polymer MEH-PPV
... The WGs were transversely pumped using a frequency doubled (k ¼ 532 nm) regeneratively amplified neodymium- doped yttrium aluminum garnet (Nd:YAG) laser operating at 10 Hz. The laser pulses were 25 ps in duration and ...
6
Characteristics and Catalytic Properties of Ni/Ti Si Composite Oxide Catalysts via CO<sub>2</sub> Hydrogenation
... attractive XRD peaks of NiO also display the strong intensity at 37.3, 43.3, 62.8 and 75.5 [1] for all Ni catalysts. Moreover, NiO peak resulted in the less appearance of the XRD peak of anatase titania crystalline at ...
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EFFECT OF INORGANIC HYBRID LiBr ON THE SILICA MATRIX XEROGELS (RESEARCH NOTE)
... level with silanols being the main centers for water physisorption [5]. This chemical inhomogeneity of the surface is likely to be even stronger in the more complex, hybrid materials, owing to the presence of calcium ...
5
Comparison of ultrathin SiO2/Si(100) and SiO2/Si(111) interfaces from soft x-ray photoelectron spectroscopy
... substrate 2p core level is clearly seen in the raw data and illustrates the typical resolution of ⬃ 0.1 eV for the SXPS instrumentation. Three interface peaks are also clearly distin- guishable. The precise ...
6
High Pressure Transformation of SiO2 Glass from a Tetrahedral to an Octahedral Network: A Joint Approach Using Neutron Diffraction and Molecular Dynamics
... O Si and also for the dependence of hni on p, where the p versus n ¯ O Si relationship was taken from MD ...between Si atoms survive to high ...
6
Formation of SiO and Related Si Based Materials Through Carbothermic Reduction of Silica Containing Slag
... of SiO vapor can be achieved by reducing pure molten silica by solid silicon carbide at a temperature of 2073 K and higher under a lower pressure in the ...to SiO vapor, transport of the vapor by a carrier ...
8
Effect of ribbon width on electrical transport properties of graphene nanoribbons
... and Si nanowires (NWs) were prepared by chemical vapor deposition and a combination of nanosphere lithography and metal‑assisted electroless etching from a Si wafer, ...p‑doped Si substrate coated ...
7
Heterointerface dipoles: Applications to (a) Si-SiO2, (b) nitrided Si-N-SiO2, and (c) SiC-SiO2 interfaces
... crystalline Si oriented in a ~ 111 ! direc- tion, and noncrystalline SiO 2 is represented by the molecular cluster in ...Fig. 2 ~ a ! . The Si side of the cluster consists of a three ...
8
Multiple Layers of Silicon-Silica (Si-SiO2) Pair onto Silicon Substrate towards Highly Efficient, Wideband Silicon Photonic Grating Coupler
... commercially available software package to design silicon photonics devices [28]. A TE polarized Gaussian shaped light source is applied on the surface of the gratings with Mode-Field Diameter of 10 µm which is ...
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Interfacial strain-induced self-organization in semiconductor dielectric gate stacks. I. Strain relief at the Si-SiO2 interface
... face in which there is a transition from a rigid substrate to an ideal random covalent network and 共 ii 兲 compositionally de- pendent under- and overconstrained bonding in glass alloys such as Ge x Se 1 ⫺ x . 25,26 The ...
10
A first principles study of sub-monolayer Ge on Si(001)
... On Si (001), there are two step types: parallel to the dimer rows (A-type, generally smooth) and perpendicular to the dimer rows (B-type, generally rough) ...the Si/Ge system for this kind of ...
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The Electromagnetic Properties of the Generalized Cantor Stack in Spherical Multilayered Systems
... Our results are shown in Figs. 2–5. As it was already mentioned such a Cantor set has the alternating structure ABCB, . . . , CB, . . . , D that due to non-symmetric rule Eq. (1) generates the sequence of ...
6
Theory and simulation of photogeneration and transport in Si SiOx superlattice absorbers
... absorbers was presented. Based on quantum kinetic theory, the formalism allows a unified approach to both quantum optics and inelastic quantum transport and is thus able to capture pivotal features of photoge- neration ...
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A Review on Effects of Reinforcements on Mechanical and Tribological Properties of Metal Matrix Composites
... A composite is a structural material which contains two or more combined constituents that are combined at a macroscopic level and are not soluble in each other. One constituent is called the matrix phase and the other ...
5
Morphology Analysis of Si Island Arrays on Si(001)
... analyze Si pyramid arrays grown by MBE at two different substrate temperatures, we have shown the occurrence of a remarkable asymmetry in the in- plane distributions of lateral facets and their relative pop- ...
6