Sharif Digital Repository

Direct production of carbon nanotubes decorated with Cu2O by thermal chemical vapor deposition on Ni catalyst electroplated on a copper substrate

Author

Nayeb Sadeghi, S.

Pub. Year

2011

Subjects

Copper oxide nanoparticle. / Decorated nanotube. / Nanotube. / Nickle catalyst. / Atmospheric environment. / Copper substrates. / Cu substrate. / Different sizes. / Direct production. / Electroplating systems. / High temperature. / Liquid-petroleum gas. / Ni catalysts. / Nucleation sites. / Selected area electron diffraction pattern. / Surface characteristics. / Thermal chemical vapor deposition. / Carbon nanotubes. / Chemical vapor deposition. / Electron diffraction. / Electrons. / Electroplating. / Nanoparticles. / Photoelectron spectroscopy. / Raman spectroscopy. / Substrates. / Surface morphology. / Surface segregation. / Transmission electron microscopy. / X ray diffraction. / X ray photoelectron spectroscopy. / Copper oxide. / Nickel. / Oxygen. / Petroleum. / Sulfuric acid. / Corrosion. / Electroplating industry. / Morphology. / Particle size. / Priority journal. / Raman spectrometry. / Scanning electron microscopy. / Surface property. / Vapor.

Hot filament CVD of Fe-Cr catalyst for thermal CVD carbon nanotube growth from liquid petroleum gas

Author

Akbarzadeh Pasha, M.

Pub. Year

2009

Subjects

HFCVD. / TCVD. / Annealed samples. / Annealing process. / Carbon nanotube growth. / Carbon source. / Catalyst particles. / Cr atoms. / Filament temperature. / Hot filament CVD. / Hot-filament chemical vapor deposition. / Liquid-petroleum gas. / Metal catalyst. / SEM. / Si substrates. / Surface concentration. / Surface density. / TEM. / Thermal CVD. / Auger electron spectroscopy. / Catalysis. / Catalysts. / Chemical vapor deposition. / Chromium. / Deposition. / Filaments (lamp) / Liquids. / Raman spectroscopy. / Scanning electron microscopy. / Semiconducting silicon compounds. / Thermal effects. / Transmission electron microscopy. / X ray photoelectron spectroscopy. / Carbon nanotubes.

Design and analysis of an innovative light tracking device based on opto-thermo-electro-mechanical actuators

Author

Mahmoudpour, M.

Pub. Year

2014

Subjects

Finite element. / Light source tracking device. / Multi-physics fields. / PLZT actuator. / Finite element formulations. / Finite element investigation. / Lanthanum-modified lead zirconate titanate. / Silicon cantilever beam. / Transverse displacements. / Design and analysis. / Light source tracking. / Light tracking. / Multi-physics. / Plzt. / Actuators. / Electromechanical devices. / Light sources. / Photovoltaic effects. / Semiconducting lead compounds. / MEMS.

Effect of geometry, joule heating, and critical current on the responsivity of MOD superconducting transition edge sensors

Author

Hosseini, M.

Pub. Year

2013

Subjects

Bolometer. / Bolometric detector. / Film parameters. / Measurement results. / Metal organic deposition. / Modulation frequencies. / Superconducting transition edge sensors. / Transition-edge sensors. / YBCO thin film. / Bolometers. / Sensors. / Thin films. / Vapor deposition. / Yttrium barium copper oxides. / Deposition.

Effect of substrate thickness on responsivity of free-membrane bolometric detectors

Author

Hosseini, M.

Pub. Year

2011

Subjects

Bolometric detector. / Bolometric response. / Finite size effect. / Finite-size scaling method. / Micron size. / Modulation frequencies. / Per unit volume. / Response analysis. / Responsivity. / Substrate thickness. / superconductor bolometer. / Time constants. / Transition-edge. / Bolometers. / Debye temperature. / Detectors. / Specific heat. / Superconducting materials. / Superconductivity. / Substrates.

The evolution of catalyst layer morphology and sub-surface growth of CNTs over the hot filament grown Fe - Cr thin films

Author

Akbarzadeh Pasha, M.

Pub. Year

2010

Subjects

Catalytic layer. / Catalytic layers. / Growth process. / HFCVD. / Morphology evolution. / TCVD. / Biology. / Carbon films. / Carbon nanotubes. / Catalyst activity. / Catalytic cracking. / Chemical vapor deposition. / Chromium. / Filaments (lamp) / Film growth. / Morphology. / Raman spectroscopy. / Scanning electron microscopy. / Thin films. / Transmission electron microscopy. / X ray photoelectron spectroscopy. / Surface morphology.

The effect of temperature on the TCVD growth of CNTs from LPG over Pd nanoparticles prepared by laser ablation

Author

Pasha, M. A.

Pub. Year

2010

Subjects

Carbon nanotubes. / Pd nanocatalyst. / Temperature effect. / Average size. / Catalytic activity. / Catalytic decomposition. / Crystallinities. / Effect of temperature. / High growth temperatures. / Low costs. / Moderate temperature. / Nano-catalyst. / PD nano particle. / SEM and TEM. / Spherical shape. / TCVD. / TEM images. / Temperature effects. / Temperature range. / UV visible spectroscopy. / Wavy structures. / Agglomeration. / Butane. / Catalyst activity. / Gas industry. / Growth temperature. / Laser ablation. / Laser applications. / Liquefied petroleum gas. / Morphology. / Multiwalled carbon nanotubes (MWCN) / Nanoparticles. / Palladium. / Raman spectroscopy. / Carbon nanotubes.

Composition lines of the visible band of synthetic diamond

Author

Vesaghi, M. A.

Publisher

Japan Society of Applied Physics,

Pub. Year

2003

Subjects

Diamond vacancy. / Electronic state of vacancy. / Free-exiton. / Jahn-Teller effect. / Photoluminescence. / Stree around metallic atoms. / Synthesized diamond. / Temerature dependence of photoluminescence Lines.

Design of a PCM storage system for a solar absorption chiller based on exergoeconomic analysis and genetic algorithm

Author

Godarzi, A. A.

Pub. Year

2013

Subjects

Energy storage system. / Exergoeconomic principles. / Genetic algorithm. / Optimization. / Phase change material. / Energy storage systems. / Exergoeconomic analysis. / Exergoeconomic optimization. / Exergoeconomic principles. / Optimum configurations. / Solar absorption. / Storage systems. / Supporting systems. / Tehran , Iran. / Thermal systems. / Total investment. / Absorption cooling. / Investments. / Optimization. / Phase change materials. / Refrigerators. / Genetic algorithms.

Characterization of a transition-edge bolometer made of YBCO thin films prepared by nonfluorine metal-organic deposition

Author

Hosseini, M.

Pub. Year

2011

Subjects

Bolometric device. / Metal-organic deposition (MOD) fabrication method. / Transition-edge sensor (TES) / Device sensitivity. / Fabricated device. / Fluorine-free. / High quality. / High-T. / Infra-red sensor. / Metal organic deposition. / Modulation frequencies. / Near Infrared. / Noise characteristic. / Optical response. / Superconducting properties. / Transition-edge. / Transition-edge sensors. / YBCO thin film. / Bolometers. / Deposition. / Fluorine. / Infrared detectors. / Nanosensors. / Pulsed laser deposition. / Scanning electron microscopy. / Superconducting devices. / Superconducting films. / Superconductivity. / Thin films. / Vapor deposition. / X ray diffraction. / Yttrium barium copper oxides. / Film preparation.

Compound Hertzian chain model for copper-carbon nanocomposites' absorption spectrum

Author

Kokabi, A.

Pub. Year

2011

Subjects

Absorption peaks. / Chain models. / Copper nanoparticles. / Coupled plasmon. / Coupling resonance. / Damping rate. / Diamond-like carbon. / Electromagnetic radiation. / Infrared range. / Metallic nanoparticles. / Nearest-neighbour interactions. / Optical absorption. / Optical absorption spectrum. / Plasmonic. / Surface plasmon resonance frequency. / Thin layers. / Weak interactions. / Absorption. / Absorption spectra. / Copper. / Electromagnetic waves. / Light absorption. / Nanocomposite films. / Nanocomposites. / Nanoparticles. / Natural frequencies. / Plasmons. / Surface plasmon resonance. / Thin films. / Absorption spectroscopy. / Carbon. / Nanocomposite. / Dipole. / Nonhuman. / Particle size. / Terahertz spectroscopy.

Effect of lattice relaxation on spin density of nitrogen-vacancy centers in diamond and oscillator strength calculations

Author

Babamoradi, M.

Pub. Year

2011

Subjects

Electronic configuration. / Ground-state spins. / Higher efficiency. / Hubbard Hamiltonians. / Lattice relaxation. / Many electron. / Nitrogen-vacancy center. / Oscillator strengths. / Population variation. / Spin densities. / Transition probabilities. / Excited states. / Experiments. / Ground state. / Paramagnetic resonance. / Paramagnetism. / Relaxation oscillators.

Synthesis and characterization of Ni-Si mixed oxide nanocomposite as a catalyst for carbon nanotubes formation

Author

Pasha, M. A.

Pub. Year

2011

Subjects

Ni-Si mixed oxide. / Average diameter. / Coprecipitation method. / Mixed oxide. / Nanotubes formation. / Reflux conditions. / Tetraethyl orthosilicates. / Transmission electron microscopy tem. / Carbon nanotubes. / Catalysts. / Nanocomposites. / Nanorods. / Photoelectrons. / Raman spectroscopy. / Scanning electron microscopy. / Transmission electron microscopy. / X ray diffraction analysis. / X ray photoelectron spectroscopy. / Silicon.

Correlation between entanglement and spin density in nitrogen-vacancy center of diamond

Author

Babamoradi, M.

Pub. Year

2011

MOD growth of epitaxial cerium oxide buffer layer on LAO substrates for fabrication of c-axis oriented YBCO

Author

Hosseini, M.

Pub. Year

2012

Subjects

Cerium oxide buffer layer. / Deposition conditions. / Final heat treatments. / Partial pressure of oxygen. / Precursor solutions. / Single crystal substrates. / Superconducting transition width. / Buffer layers. / Calcination. / Deposits. / Epitaxial growth. / Fabrication. / Superconducting films. / Yttrium barium copper oxides. / Substrates. / Buffer. / Cerium oxide. / Inorganic compound. / Lanthanum aluminate. / Nanofilm. / Oxygen. / Unclassified drug. / Crystal structure. / Gas flow. / Nanofabrication. / Oxygen tension. / Scanning electron microscopy. / Superconductor. / Thickness. / X ray diffraction.

CO gas sensor properties of Cu@CuO core-shell nanoparticles based on localized surface plasmon resonance

Author

Ghodselahi, T.

Pub. Year

2011

Subjects

A-C:H thin film. / Absorbances. / AFM image. / CO absorption. / CO gas sensor. / CO molecule. / Codeposition. / Core-shell. / Core-shell nanoparticles. / Dielectric coefficient. / Hexagonal arrays. / Localized surface plasmon resonance. / Mie theory. / Physical absorption. / Red shift. / Rf-PECVD. / Rf-sputtering. / Room temperature. / XRD. / Absorption. / Chemical detection. / Chemical sensors. / Copper. / Film preparation. / Molecules. / Nanoparticles. / Plasmons. / Surface plasmon resonance. / Shells (structures)

Solar absorption chiller optimization by using genetic algorithms

Author

Abbasi Godarzi, A.

Pub. Year

2010

Subjects

GA. / Modeling. / Solar chiller absorption. / Annual cost. / Construction costs. / Cross-section area. / Economic optimization. / Electricity-consumption. / Exergy Analysis. / Mathematical programming models. / Optimized parameter. / Solar absorption. / Thermodynamic laws. / Total investment. / Absorption cooling. / Computer programming. / Cooling systems. / Costs. / Exergy. / Gallium. / Heat exchangers. / Investments. / Mathematical models. / Mathematical programming. / Models. / Optimization. / Refrigerators. / Genetic algorithms.

Explanation of atomic displacement around lattice vacancies in diamond based on electron delocalization

Author

Heidari Saani, M.

Pub. Year

2008

Subjects

Atomic displacements. / Atomic relaxations. / Charge states. / Cluster methods. / Delocalization. / Electron paramagnetic resonances. / EPR signals. / Lattice relaxations. / Lattice vacancies. / Neighboring atoms. / Positively charged. / Spin localizations. / Spin states. / Unpaired electrons. / Atomic physics. / Bond length. / Density functional theory. / Diamonds. / Electron resonance. / Electron spin resonance spectroscopy. / Electrons. / Paramagnetic resonance. / Paramagnetism. / Quantum theory. / Relaxation processes. / Spin dynamics. / Vacancies. / Atoms.

Comparison of synthesis and purification of carbon nanotubes by thermal chemical vapor deposition on the nickel-based catalysts: NiSio2 and 304-type stainless steel

Author

Fekri, L.

Pub. Year

2010

Subjects

Catalyst. / Synthesis. / Bamboo structures. / Burn-in. / Nickel-based catalyst. / Optimum temperature. / Purification process. / SEM and TEM. / Thermal chemical vapor deposition. / Carbon nanotubes. / Catalysts. / Chemical vapor deposition. / Oxidation. / Raman spectroscopy. / Scanning electron microscopy. / Stainless steel. / Synthesis (chemical) / Transmission electron microscopy. / Vapors. / Purification.