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New silicon-based plasmonic waveguide with nano-scale gap at the interface of metal and Si
A novel hybrid plasmonic waveguide (HPW) have been numerically investigated, based on a silicon-on-insulator near the telecom wavelength λ= 1550nm by the finite element method. The HPW consist of a metal surface placed on a low index medium (SiO2) which surrounded by a high index medium (Si). With proper waveguide siz…
Bridges balanced by variable voltages from multichannel generators
Two bridge circuits for relating three-terminal or two-terminal pair impedance standards of any kind are described, balancing of which is made by voltages supplied from stable generators. In the first case two voltages are supplied, amplitude and phase of one of them being controllable. Four voltages are used in the s…
Gas-Adsorption Indicator Method for NDT and Surface-Defect Characterization
The gas-adsorption indicator method (GAIM) is a relatively unknown yet reliable technique for nondestructive testing (NDT) of engineering materials, and component parts. Invented in Russia, GAIM is a spin-off from the BURAN space program in the former Soviet Union. GAIM is inspired on a highly effective method to dete…
Application of Nanophases Stability Thermodynamics to Advanced Alloys
The thermodynamic analysis of stability conditions was carried out for disperse heterophase systems obtained by a method of NSP put in metal melts for high-temperature strength of the nickel alloys. For a thermodynamic criterion (К) of stability was selected the specific variation of a free energy of the process of a…
Extraction of Silk Protein from Middle Silk Gland of B.mori for Preparation of 3-D Scaffold
In this paper, 3-D scaffolds were prepared using native protein solution extracted from middle silk gland of B.mori silkworm (SS). The distribution of pore in 3-D scaffold was homogeneous, and the pore size decreased with increase in the concentration of SS. By changing the concentration from 1.7%, 3.5% to 7%, the por…
Synthesis of Ultrafine Cr3C2 Powders by Carbothermal Reduction of Precursors
Ultrafine Cr3C2 powders with globular-like particle of ~0.3-0.8 μm were synthesized by a new precursor method, namely carbothermal reduction of complex chromium oxide-carbon mixture, which was made initially from salt solution containing chromium and carbon elements by air drying and subsequent calcining at 400 °C for…
Preparation and characterization of multiferroic BiFeO3
The multiferroic materials BiFeO3nanoparticles of dispersion uniformity were synthesized by the citric acid sol-gel method, using the iron(III) nitrate and bismuth nitrate as the reactants and dilute nitric acid as the catalyst. The physical and chemical characteristics, such as structure, morphology and purity of BiF…
Research of Thermal Shock Resistance of Si3N4 and SiC
The study is carried out combing with the production practice in Danjiangkou Hongyuan SiC limited. Si3N4 and SiC were prepared successfully from SiC and Silicon power in nitrogen atmosphere at 1425°C and 1375°C sintering temperature by the serial of techniques, such as ingredients, mixing, molding and drying, respecti…
Blue Phosphorescent Organic Light-Emitting Diodes Based on SFX2PO Host
We report on blue phosphorescent organic light-emitting diodes (PHOLEDs) with biphenyl (Spiro[fluorene-9,9′-xanthen]-2-yl) phosphine oxide（SFX2PO）host. The device studied in this work has the structure of ITO/m-MTDATA:MoOx(10nm)/m-MTDATA(30nm)/ TAPC(10nm)/SFX2PO: Firpic(10nm)/Bphen(40nm)/LiF(1nm)/Al(200nm), in which ma…
High Speed High Resolution pnCCDs and SDDs for Micro Fluorescence Analysis
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
Microstructure of eutectic composites Ln 1−x Ln′ x MnO3 (Ln = Eu or Tb; Ln′ = Y or Ho) near the transition between the orthorhombic structure and hexagonal structures
Multiferroic crystals Ln 1 − x MnO3 (Ln = Eu or Tb; Ln′ = Y or Ho) have been grown by floating-zone melting; the compositions of these crystals are close to the point of concentration transition from the orthorhombic structure to the hexagonal phase. Scanning microscopy has revealed that the crystal boules have a regu…
Investigation on the field emission behaviour of CNT-based emitter systems
We have investigated the probable origin of instable emission behaviour for various types of cold emitters based on CVD carbon layers, CNT and Al2O3/ITO glass. Of them, CNT-based cold emitters have been accepted to be most appropriate for the promising applications such as displays, flat lamps, signage boards and back…
Effect of Titanium on the Precipitating Behavior of Inclusions and Corrosion Resistance of Niobium Stabilized 409 Ferrite Stainless Steel
In order to investigate the effect of titanium addition on the precipitating behavior of inclusions and corrosion resistance of niobium stabilized ferrite stainless steel, experiments were conducted in a high frequency vacuum induction furnace for smelting titanium and niobium stabilized ferrite stainless steel in arg…
Effects of Relative High Density Preparation of Interfacial Coated Pb(Zr0.52Ti0.48)O3 on CaCu3Ti4O12 with Short Sintering Time on its Dielectric Properties
Pb(Zr0.52Ti0.48)O3was coated on the surface of CaCu3Ti4O12particles that prepared using sol-gel method. Then the composite particles were sintered into composite ceramics using cold press with the two different pressures and pressing time to achieve sufficient higher relative density after sintering. Afterward, the co…
Effects of grid parameters on field emission characteristics in triode type CNT X-ray source
Summary form only given. Field emission X-ray sources have been developed by using carbon nano-tubes (CNT) for diverse applications in fields of biological, medical and material diagnostic technologies. For such applications, it is required to improve the efficiency of field emission for obtaining higher X-ray flux. P…
Biomimetically reinforced transparent nanostructures fabricated by pulsed laser deposition
We have recently developed a new concept of glass and polymer superlattice structures that has superior optical and mechanical properties arising from atomic scale engineering approach. The interlayers of glass and polymer can have thickness as low as 2 nm and the structures can be grown on polymer or glass substrates…
Fabrication, laser structuring and field emission properties of carbon nanowalls
We have synthesized carbon nanowalls (CNWs) on Si substrate by inductively/capacitively coupled plasma enhanced chemical vapor deposition (ICP/CCP-PECVD). The shape and density of CNWs are controlled by adjusting the synthesis parameters. Local field emission measurements of Ø 30 μm spots reproducibly yielded stable c…
Effect of the PH on the Dispersal of Pt on the Alumina
This thesis makes a research about the effect of the pH on dispersion and catalytic activity of γ-Al2O3. The characterization of catalytic uses the reaction of Hydrogenation of nitrobenzene, ASS and HOT etc. The results show that the impregnating solution’s pH has great effect on the dispersion of catalytic active com…
Microstructural And Optical Property Study Of Bipyramid Au/Pd Core Shells By Aberration Corrected and Monochromized STEM
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.