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Showing 1 to 20 of 99 for “"copper oxide"”.
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Condensation on superhydrophobic copper oxide nanostructures
… dropwise condensation. This work investigates copper oxide nanostructures as a potential substrate for superhydrophobic condensation. We first explored and refined a procedure for creating and functionalizing oxide nanostructures on copper surfaces. The condensation behavior of these samples …
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Flotation characteristics of certain copper oxide minerals
Includes bibliographical references (pages 69-70).
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Electrodeposition and Characterization of Copper Oxide Thin Films
Cuprous oxide is a low cost semiconductor with applications in solar energy conversion and oxygen sensing devices. Fabrication of these films by electrodeposition offers a simple and cost effective method for producing large-area thin films in mass quantities. An interesting phenomenon associated …
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Structure and properties of copper oxide thin films
Copper oxide thin films were prepared on glass substrates by radio frequency sputtering of a sintered CuO target in various argon-oxygen atmospheres. Films sputtered in pure argon consisted of both CuO and Cu₂O due to partial dissociation of CuO during deposition. Sputtering in 10% and 50% oxygen …
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Computational studies of the properties of copper oxide clusters and the reactions of phenol and chlorinated phenols with copper oxide clusters
… to study the structures and stabilities of copper oxide clusters, CunOn (n=1-8) and CuOn (n=1-6). The lowest energy structures of neutral and charged copper oxide clusters were determined using primarily the B3LYP/LANL2DZ model chemistry. In CunOn clusters with n=1-8, a transition from …
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Experimental consequences of mottness in high-temperature copper-oxide superconductors
It has been more than two decades since the copper-oxide high temperature superconductors were discovered. However, building a satisfactory theoretical framework to study these compounds still remains one of the major challenges in condensed matter physics. In addition to the mechanism of …
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Copper Oxide Nano Photocatalyst for Wastewater Purification using Visible Light
… presents the synthesis and characterization of copper oxide nano photocatalyst for wastewater purification using visible light. The presented copper oxide nano material can serve as a low-cost and green technology for environmental applications. Uniform cubic, octahedral and rhombic dodecahedral …
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Scanning tunneling spectroscopy of lead-substituted bismuth strontium copper oxide
The hole-doped cuprate Bi ... is doped with lead to the solubility limit of x = 0.38 and studied using STM/STS in the overdoped regime where Tc < 2K. Despite the high lead content, residual supermodulations are observed in the BiO plane. In agreement with previous studies on (Pb,Bi)-2201, there is …
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The properties of sputtered copper oxide thin film for sensing application
… sputtering was investigated by correlating the copper oxide plasma and thin film. The optimum oxygen flow rate for the deposition of CuO thin film was observed to be 8sccm base on the ratio of copper and oxygen emission obtained from the OES analysis. Moreover, through the XRD analysis it was …
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Fully dense aluminum-rich aluminum copper oxide powders for energetic formulations
… thermite mixture comprising mixed metal and oxide powders, this reaction is rate limited by the slow heterogeneous mass transfer at the metal and oxide interface. The relatively low reaction rate and a difficult ignition have restricted practical applications for this reaction. For newly …
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Optimization of copper oxide film by dip coating technique for oxygen detection
Copper oxide (CuO) based gas sensor has been widely investigated due to its low- cost material, nontoxicity and abundant on earth. The CuO hierarchical structure is used to enhance the sensing performance of the gas sensor. This is because of its structure provides large surface area for the …
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Resistance fluctuation spectroscopy and other transport behavior in lanthanum barium copper oxide
In phase diagrams of cuprate high-temperature superconductors, superconductivity often occurs close to other phases of strongly correlated electron matter. In La(2-x)Ba(x)CuO(4) (LBCO), the critical temperature for superconductivity is anomalously suppressed at x = 1/8, and at the same doping, a …
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Nuclear magnetic resonance studies of yttrium barium copper oxide in the superconducting state
In this thesis we report measurements of the $\sp{63}$Cu Knight shift in the superconducting state for the plane (Cu(2)) and chain (Cu(1)) sites in YBa$\sb2$Cu$\sb3$O$\sb7$. We also have measured the temperature and field dependent $\sp{63}$Cu(2) nuclear spin relaxation rates ($\sp{63}$W1$\alpha$) …
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LASER ABLATION FOR COPPER OXIDE NANOWIRES GROWTH AND ITS APPLICATION FOR OIL-WATER SEPARATION
… Thermally-induced oxidative growth of copper oxide (CuO) nanowires (NWs) on Cu foils is one readily scalable technique of mass-producing nanostructures. An enhancement to the sturdiness and adhesion of the CuO NWs array on a Cu foil was achieved with laser-fabricated microholes through …
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Processing and phase stability of metal carboxylate-derived barium-yttrium-copper oxide thin films
… Metal neodecanoates of barium, yttrium, and copper were synthesized and mixed into a homogeneous, precipitate-free solution, which was spin-cast onto ZrO$\sb2$ coated silicon wafers. A minimum heat treated temperature of 725$\sp\circ$C in N$\sb2$ was needed to decompose the BaCO$\sb3$ present …
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Electrical and magnetic properties of twin-free single-crystal praseodymium-doped yttrium barium copper oxide
Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:06:40Z Item is restricted indefinitely.
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Experimental determination of the symmetry of the superconducting pairing state in yttrium barium copper oxide
In this thesis I present measurements of bimetallic Pb-Au-YBCO dc SQUIDs (Superconducting QUantum Interference Devices) and Josephson junctions that provide an important clue to the origin of the pairing mechanism for high temperature superconductivity in the cuprates. By probing the momentum space …
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A study of the copper oxide-aluminum oxide catalysts for the oxidation of carbon monoxide
… be truly catalytic in the oxidation of carbon monoxide. Lockwood and Frazer (15) have described the preparation of a catalyst of this type. Their description of the method of preparation and of the quantities of materials used is rather inadequate for an exact duplication of the catalyst which …
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The doping and magnetic field dependence of the heat capacity of yttrium barium copper oxide superconductors
This is a report of a series of measurements made on the doping effects in reduced oxygen content YBa2Cu3O7-x. The two most remarkable findings are: 1) there is a rapid decrease of the amplitude of the heat capacity anomaly with the reduction of the oxygen content and 2) the magnitude of the …
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