Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"multiwall carbon nanotubes"”.
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Design of electrode for electrochemical energy storage and conversion devices using multiwall carbon nanotubes
All-multiwall carbon nanotube (MWNT) thin films are created by layer-by-layer (LbL) assembly of surface functionalized MWNTs. Negatively and positively charged MWNTs were prepared by surface functionalization, allowing the incorporation of MWNTs into highly tunable thin films via the LbL technique. …
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The Effects of Cesium Deposition and Gas Exposure on the Field Emission Properties of Single Wall and Multiwall Carbon Nanotubes
… field emission (FE) properties of single-walled carbon nanotube (SWNT) bundles were studied. In addition, a comparative study was made on the effects of O2, Ar and H2 gases on the field emission properties of SWNT bundles and multiwall carbon nanotubes (MWNTs). We observed that Cs deposition …
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h/e magnetic flux modulation of the energy gap in nanotube quantum dots
We have studied the energy spectrum of multiwall carbon nanotubes using differential conductance measurements. The carbon nanotubes act as the Coulomb island of a single electron tunneling transistor. Temperature dependence of the conductivity curves shows that the electron wave functions extend …
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Mechanical and Electrical Characterization of Carbon Fiber/Bucky Paper/Zinc Oxide Hybrid Composites
<p>The quest for multifunctional carbon fiber reinforced composites (CFRPs) expedited the use of several nano reinforcements such as zinc oxide nanorods (ZnO) and carbon nanotubes (CNTs). Zinc oxide is semi-conductor with good piezoelectric and pyroelectric properties. These properties could be …
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Advanced Dispersion Strategies of Carbon Nanofillers and their use to enhance Mechanical and Electrical Properties of Polyacrylonitrile Fibers
… of polyacrylonitrile fibers containing carbon nanofillers, namely carbon nanotubes (CNTs) and carbon black (CB). Mechanically strong and electrically conducting poly(acrylonitrile) (PAN) fibers were obtained by incorporating up to (a) 15 wt% single wall carbon nanotubes (SWNTs) and (b) …
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Sintesi e caratterizzazione di nanocompositi aerogel altamente porosi per applicazioni catalitiche
… industrial processes such as the synthesis of Carbon Nanotubes via Catalytic Chemical Vapour Deposition (CCVD) and the Water Gas Shift Reaction (WGSR), which plays an important role in the technology of fuel cells (FC), showing interesting catalytic activities. The tests for multiwall carbon …
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Atomic Level Study Of Water-Gas Shift Catalysts Via Transmission Electron Microscopy And X-Ray Spectroscopy
… glycerol reforming reaction of Pt supported on multiwall carbon nanotubes (MWCNT) is promoted by co-impregnating with cobalt. The synthesis resulted in a variety ofnanostructures among which Pt-Co bimetallic nanoparticles are found to be responsible for the observed promotion. The unprecedented …
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Giant Magnetoresistance and Quantum Transport in Magnetic Hybrid Nanostructures.
… superconductor/normal metal junctions and carbon nanotubes exhibit a rich variety of features, with the potential for future generations of electronic devices with improved sensitivity and higher packing density. The modeling of such structures in a flexible and accurate way, with a …
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Electrochemical Deposition of Copper and Zinc Nanomaterials at Polypyrrole Thin Films
… introduction of polyethyleneimine-functionalized multiwall carbon nanotubes (MWNT-PEI) to the PPy-PSS films. Electrochemical impedance spectroscopy studies showed that the nanotubes increased the electronic conductivity of the reduced films. The limit of detection of the PPy-PSS-MWNT-PEI-CuNP …
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Development of functionalized materials through sol-gel route for applications in catalysis and surface protection
… property or with an additional property - Cyclocarbonation: Synthesis of an immobilized catalyst for polyurethane production through a green process The first application concerns the use of a photocatalyst that allows to degrade volatile organic compounds (VOC). The main photocatalyst is TiO2. …
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Specific and non-specific interactions on carbon material surfaces.
… non-polar fluid phases and surfaces of various carbon materials: Activated Carbon (AC), non-porous Carbon Black (CB) and Multiwall Carbon Nanotubes (MWCNTs)with different surface chemistry have been studied. These are currently of great interest as they govern the interfacial behaviour of …
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Aerosol-Jet Printed Nanocomposites for Flexible and Stretchable Thermoelectric Generators
… for flexible TE applications. Subsequently, multiwall carbon nanotubes (MWCNTs) were introduced to enhance σ of AJ-printed nanocomposites, thereby achieving even higher PF values. A novel in situ mixing method was capable of simultaneously incorporating high-S Sb2Te3 nanoflakes and high-σ …