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Showing 1 to 20 of 25 for “"MWNT"”.

  1. Layer-by-layer carbon nanotube electrodes for flexible chemical sensor and energy storage applications

    Saetia, KittipongMassachusetts Institute of Technology2013

    … for creating multi-walled carbon nanotube (MWNT) films on porous electrospun fiber mats via LbL assembly of surface-functionalized MWNTs. Negative and positive charges were introduced on outer walls of MWNTs by surface functionalization to enable the assembly of MWNTs into multilayer films …

    mit Repository record

  2. Design of electrode for electrochemical energy storage and conversion devices using multiwall carbon nanotubes

    Lee, Seung Woo, Ph. D. Massachusetts Institute of TechnologyMassachusetts Institute of Technology2010

    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. …

    mit Repository record

  3. Layer-by-layer assembled carbon nanotube nanostructures for high-power and high-energy lithium storage

    Gallant, Betar M. (Betar Maurkah)Massachusetts Institute of Technology2010

    … functionalized multiwall carbon nanotube (MWNT) electrodes as positive electrodes in asymmetric cells with a lithium metal or LTO negative electrode. In these cells, lithium ions undergo reversible Faradaic reactions with oxygen-containing functional groups on MWNTs, leading to high …

    mit Repository record

  4. A carbon nanotube bearing and Stodola rotor

    Cook, Eugene HightowerMassachusetts Institute of Technology2008

    … on a cantilevered multi-wall carbon nanotube (MWNT) shaft (Stodola configuration) is proposed. The nanotube is also expected to function as the bearing, since individual walls of a MWNT are not strongly bonded and can slide on each other with low friction. While MWNT based rotors have been …

    mit Repository record

  5. Impact of Porous Media Grain Size on the Transport of Multiwalled Carbon Nanotubes

    Mattison, Nikolai Troy2011

    … nanomaterial (multi-walled carbon nanotubes or MWNTs) through porous media. Particular focus is placed on the impact of varying mean collector grain size on MWNT retention. Results from one dimensional column experiments conducted under various physical and chemical conditions coupled with …

    uwo Repository record

  6. Carbon Nanotubes in Cancer Therapy

    Abdallah, BanuUniversity of Central Lancashire2013

    … of CNTs; single-walled (SWNT) and multi-walled (MWNT) have been investigated. Pristine CNTs are poorly soluble in aqueous solvents, and therefore need to be functionalized (f-CNT) to enhance their solubility and biocompatibility. The f-CNTs possess the ability to cross cell membranes and enter …

    cent-lancashire Repository record

  7. Dispersion of carbon nanotubes in vinyl ester polymer composites

    Pena-Paras, LauraRice University2010

    … (SWNTs), double-walled (DWNTs), multi-walled (MWNTs) and XD-grade carbon nanotubes (XD-CNTs) were dispersed in vinyl ester (VE) using an ultra-sonic probe at a fixed frequency. The power, amplitude, and mixing time parameters of sonication were correlated to the electrical and mechanical …

    rice Repository record

  8. Field Emission Based Sensors Using Carbon Nanotubes

    Dong, Changkun2019

    … measured.</p> <p>Multi-walled carbon nanotubes (MWNT) were grown by chemical vapor deposition (CVD) on various substrates: Ni and Hastelloy gauze, 304 stainless steel (SS) plates, and Ni-coated Si wafers. Either C<sub>2</sub>H<sub>2</sub>/Ar (or N<sub>2</sub>) source gases were used in a …

    odu Repository record

  9. A magnetorheological study of single-walled and multi-walled carbon nanotube dispersions in mineral oil and epoxy resin.

    Yang, ZhengtaoUniversity of North Texas2005

    … (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 were conducted in …

    unt Repository record

  10. Electrochemical Deposition of Copper and Zinc Nanomaterials at Polypyrrole Thin Films

    Andreoli, EnricoNational University of Ireland Maynooth2010

    … 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 nanocomposite was 30 µM nitrate. …

    maynooth Repository record

  11. Fundamental understanding and materials design approaches for lithium-oxygen electrochemical energy storage

    Gallant, Betar M. (Betar Maurkah)Massachusetts Institute of Technology2013

    … multiwalled carbon nanotube (MWNT) positive electrodes for high-power Li batteries. Thin-film (below 3 im) electrodes are used as a platform for probing the kinetics of surface redox reactions between Li+ and oxygen on MWNTs in asymmetric and symmetric cell configurations. We …

    mit Repository record

  12. Carbon Nanotube Mechanics: Continuum Model Development from Molecular Mechanics Virtual Experiments

    Sears, Aaron ThomasVirginia Tech2006

    … and multi-wall carbon nanotubes (SWNTs and MWNTs respectively) similar to those performed in the mechanics of materials laboratory on a continuum structure. The output (energy and deformation rather than the load and deflection) is used to understand the material response and formulate …

    vt Repository record

  13. Mechanism and the Effect of Microwave-Carbon Nanotube Interaction

    Ye, ZhouUniversity of North Texas2005

    … For many kinds of carbon nanotubes (SWNT, DWNT, MWNT, ropes and strands) the resonant parameters are found to be located in an unstable region of the parameter space of Mathieu's equation. Third order wave equations are used to qualitatively describe the effects of phonon-phonon interactions and …

    unt Repository record

  14. Effective Cancer Therapy Design Through the Integration of Nanotechnology

    Fisher, Jessica Won HeeVirginia Tech2008

    … (NPs), such as multi-walled nanotubes (MWNTs) or carbon nanohorns (CNHs), into target tissue prior to laser irradiation increases heating selectivity permitting more precise thermal energy delivery to the tumor region and enhances thermal deposition thereby increasing tumor injury and …

    vt Repository record

  15. Individual Carbon Nanotube Probes And Field Emitters Fabrication And T

    Chai, Guangyu

    … method. The single multiwall carbon nanotube (MWNT) sticks out as a tip of the carbon fiber. In order to pick up the individual CNT tips, focused ion beam (FIB) technique is applied to cut and adhere the samples. The carbon fiber with nanotube tip was first adhered on a micro-manipulator with …

    ucf

  16. Toxicology of nanoparticles after cellular uptake

    Cheng, CrystalUniversity of Cambridge2010

    … was assessed: multi-walled carbon nanotubes (MWNTs), single-walled carbon nanotubes (SWNTs), and zinc oxide (ZnO) nanopowders. A combination of cell viability assays—NR, MTT, LDH, live dead—and microscopy—TEM, SEM, confocal—was used. No direct interactions occurred with any of the assays …

    cambridge Repository record

  17. Bio-Nano Interfaces: Enzyme Immobilization for Biomimetic Energy Harvesting

    Hjelm, Rachel2018

    … synthase (CS) on multi-walled carbon nanotubes (MWNTs). The effects of each method on the oxidation of L-malate (M) by MDH in the presence of CS are reported. Poly-(methylene green)-modified MWNT 'buckypaper' (PMG-BP) was used to reduce cell overpotential through regeneration of oxidized …

    unm Repository record

  18. Nanocarbons as charge carriers in organic solar cells

    Lau, Xinbo C.

    … Functionalized multi-walled carbon nanotubes (MWNTs) are used as additives to C70 to form a weak bonded composite, which result in better absorption and better phase separation. Consequently, PCE increases 70%. In another set of experiments, MWNTs are size sorted and MWNTs of different sizes …

    njit Repository record

  19. Developing durable electrodes for selective electroreduction of CO2 to value-added intermediates

    Nwabara, Uzoma OUniversity of Illinois at Urbana-Champaign2022

    … on polymer-wrapped carbon nanotubes (Pt/PyPBI/MWNT) as an anode catalyst for glycerol oxidation opposite of ECO2RR and calculates the FE of liquid anodic products. Stable CuAg core-shell nanoparticles promoted higher ethylene formation (FE=27%) at 2.25 V of cell potential compared to commercial …

    uiuc Repository record

  20. Synthesis and applications of materials and polymers containing graphenic and/or triptycene moities

    Sydlik, Stefanie A. (Stefanie Arlene)Massachusetts Institute of Technology2013

    … and by 27 % over a 1 weight % unmodified MWNT control sample. SEM images revealed a fracture surface morphology change with the incorporation of EpCNT and a deflection of the crack fronts at the site of embedded CNTs, as the mechanism accounting for increased adhesive strength. Chapter 2: …

    mit Repository record

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