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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 20 of 34 for “"single wall carbon nanotubes"”.
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Raman spectroscopy of single wall carbon nanotubes
A single wall carbon nanotube (SWNT) is a new form of carbon, whose atomic arrangement is equivalent to a graphene sheet rolled into a cylinder in a seamless way. The typical diameter of a SWNT ranges from 0.6 nm to several nm and the typical length ranges from tens of nm to several cm. Due to its …
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Thermal transport in individual single-wall carbon nanotubes
… of phonon transport in individual suspended single-wall carbon nanotubes (SWCNTs). A microfabricated device consisting of two adjacent suspended membranes, each with a platinum resistance heater and thermometer, was used to directly measure the thermal conductance of three individual SWCNTs. …
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Large scale production of single wall carbon nanotubes
Single wall carbon nanotubes (SWNTs) possess many properties that are both novel and desirable. Most notable of said properties include electrical conductivity (metallic and semiconducting), high thermal conductivity, directionality in both electrical and thermal conductivity, high geometric aspect …
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Atomic-level investigation of fluorinated single-wall carbon nanotubes
… in particular fluorination, of single-wall carbon nanotubes (SWNTs) for the purposes of solvation and subsequent chemical reaction. Towards this end, this thesis reports the investigation of fluorinated SWNTs (fluorotubes) performed by scanning tunneling microscopy (STM). This …
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Functionalization, growth and applications of single wall carbon nanotubes
… mechanical and electrical properties, carbon nanotubes, and especially single wall carbon nanotubes (SWNTs), represent one of the most widely investigated materials today in the emerging field of nanotechnology. The development of oriented growth of SWNTs critical for applications, …
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Science of single-wall carbon nanotubes: Purification, characterization and chemistry
… diameters can be produced. Purification of single wall carbon nanotubes produced by laser-oven and HiPco process is also discussed. Metal catalyzed oxidation at low temperature has been shown to selectively remove non-SWNT carbon and permit extraction of metals with concentrated HCl. These …
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Photochemical Tailoring of Single-Wall Carbon Nanotubes by Photoexcited Sodium Hypochlorite
Single-wall carbon nanotubes (SWCNTs) are intriguing 1D nanomaterials whose unusual electronic properties are of interest for a wide array of applications. More specifically, semiconducting SWCNTs have structure-specific electronic transitions that allow for discrete near-infrared fluorescence …
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Single wall carbon nanotubes as viscosity modifiers in polypropylene matrix nanocomposites
Single wall carbon nanotubes (SWNTs) were studied as low shear rate viscosity modifiers in the polypropylene matrix of nanocomposites. To create nanocomposites which did not demonstrate increased low shear rate viscosity when nanotubes were added into the polymer melt, this work focused on …
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Variance Spectroscopy and its Application to the Study of Single-Wall Carbon Nanotubes
… spectroscopy and its application to characterize single-wall carbon nanotube (SWCNT) dispersions. This technique measures and analyzes changes in photoluminescence intensity caused by statistical variations in the local composition of dilute nanoparticle samples. The data are spectrally resolved, …
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Carbon nanotubes as interconnect for next generation network on chip
… better performance when compared with their single-core equivalent. Recently, Networks-on-Chip (NoC) have emerged as a communication methodology for multi core chips. Network-on-Chip uses packet based communication for establishing a communication path between multiple cores connected via …
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A magnetorheological study of single-walled and multi-walled carbon nanotube dispersions in mineral oil and epoxy resin.
Single wall carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs) were dispersed in mineral oil and epoxy resin. The magnetorheological properties of these dispersions were studied using a parallel plate rheometer. Strain sweeps, frequency sweeps, magneto sweeps and steady shear tests …
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Alignment and characterization of carbon nanotubes of photolithographically patterned electrodes
… an (n,m) assignment for individual suspended single wall carbon nanotubes (SWNTs) based on the measurements of their Raman Radial Breathing Modes and electron transition energies E[sub]ii based on Raman spectroscopy. The suspended SWNTs are grown on a photolithographically defined electrode …
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Nanostructured composite materials based on carbon nanotubes and 3-D photonic crystals
Carbon nanotubes (CNT) and in particular, single-wall carbon nanotubes (SWCNT) have been extensively studied, in large part, due to their unique one-dimensional crystalline structures and related electronic and optical properties. Various polymeric composite materials, which were based on carbon …
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Photophysics of carbon nanotubes
… the recent advances made in optical studies of single-wall carbon nanotubes. Studying the electronic and vibrational properties of carbon nanotubes, we find that carbon nanotubes less than 1 nm in diameter exhibit dramatic changes in their electron and phonon dispersion relations due to the …
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Chirality-dependent, van der Waals-London dispersion interactions of carbon nanotube systems
… properties rather than by parameterization. Single wall carbon nanotubes (SWCNTs) represent an ideal class of materials to study vdW-Ld interactions because very small changes in their geometrical construction, via the chirality vector [n,m], can result in vastly different electronic and …
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Synthesis and characterization of polymer nanocomposites
… hydrotalcite (HT), sodium montmorillonite (MMT), single wall carbon nanotubes (SWNT) and fullerenes (FUL), at 5 and 10 wt% loading. Structural characteristics and mechanical, thermal and barrier properties of the nanocomposites were characterized by different techniques and compared to those of …
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MHD heat and MASS transfer of jet nanofluids flow on the porous wall with chemical reaction
… transfer of jet flow of nanofluids over a porous wall with chemical reaction effects is numerically studied using different types of nanoparticles such as copper (Cu), alumina ( 2 3 Al O ), and single wall carbon nanotubes (SWCNTs) with water as the base fluid. The similarity transforms …
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Metallic Ground State of Functionalized Carbon Nanotubes
Single-wall carbon nanotubes (SWCNTs) are a fascinating material because they exhibit many outstanding properties. Due to their unique geometric structure, they are a paradigm for one-dimensional systems. Furthermore, depending on their chirality, they can be either metallic or semiconducting. The …
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