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Dissertations / Theses on the topic 'Multiwalled nanotubes'

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Published: 28 May 2022
Last updated: 31 July 2025

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1

Yi, Yan. "Ballistic conduction in multiwalled carbon nanotubes." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-05102004-103121/unrestricted/yi%5Fyan%5F200407%5Fphd.pdf.

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Thesis (Ph. D.)--School of Physics, Georgia Institute of Technology, 2005. Directed by Walt A. de Heer.<br>Whetten, Robert L., Committee Member ; Conrad, Edward H., Committee Member ; First, Phillip N., Committee Member ; de Heer, Walt A., Committee Chair ; Gaylord, Thomas K., Committee Member. Includes bibliographical references.
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2

LARRUDE, DUNIESKYS ROBERTO GONZALEZ. "PHOSPHORUS INCORPORATION INTO MULTIWALLED CARBON NANOTUBES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18540@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Neste trabalho é feito um estudo da incorporação de fósforo na estrutura dos nanotubos de carbono de paredes múltipla pelo método de crescimento de Spray Pyrolysis. Para este fim, foi variada a concentração de fósforo no precursor de partida para obter amostras com diferentes concentrações de átomos dopantes visando propiciar a dopagem substitucional. Foi mostrado através da microscopia eletrônica de varredura e de transmissão que uma vez introduzido o fósforo estes tubos experimentam mudanças na sua estrutura, pois os tubos dopa
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3

Mogilevsky, Gregory Wu Yue. "Multiwalled titania nanotubes structural characterization and functionality /." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2010. http://dc.lib.unc.edu/u?/etd,2901.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2010.<br>Title from electronic title page (viewed Jun. 23, 2010). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Curriculum of Applied Sciences and Engineering." Discipline: Applied and Materials Sciences; Department/School: Applied and Materials Sciences.
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4

Hilding, Jenny Marie. "Characterization and Applications of Multiwalled Carbon Nanotubes." UKnowledge, 2004. http://uknowledge.uky.edu/gradschool_diss/303.

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Multiwalled carbon nanotubes (MWNTs) have attracted great interest during thelast decade due to their possession of a unique set of properties. In addition totheir strength, MWNTs have well defined morphologies, with large aspect ratiosand pores in the meso range, and intriguing transport properties, such as highelectrical and thermal conductivity.We are interested in how variations in the MWNT morphology affect areas ofpossible engineering applications. We have identified morphology as a criticalelement for the performance of MWNTs in engineering applications. Specificareas studied and report
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5

Emohare, Osa. "Osteogenic cell function on multiwalled carbon nanotubes." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609750.

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6

Vurur, O. F., and I. E. Serhatli. "Functionalized Multiwalled Carbon Nanotubes for UV Coating." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35294.

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We propose a strategy to enhance the photocurable properties of the multi walled carbon nanotube (Mwcnt) / binder films through control of the intermolecular interaction between the nanotube and the binder material. For this aim, photosensitive functionalized carbon nanotube was synthesized and by mixing binder, it was cured under UV-light. Epoxy acrylate resin was used as binder and reactive diluents such as HDDA, DPGDA were added as both crosslinker and viscosity extender. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35294
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7

Variava, Meherzad Farhad. "Industrially Feasible Utilizations of Multiwalled Carbon Nanotubes." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/12028.

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Since the 1991 rediscovery of carbon nanotubes (CNTs), methods to decorate these materials with well-dispersed, functional nanoparticles have been greatly pursued for implementation as heterogeneous catalysts within sustainable processes. Here, the viability of applying a polyol-mediated CNT functionalization method was investigated. Polyol-mediated functionalization is a viable alternative using biocompatible solvents that are available in industrial quantities. The literature shows varying deposition results with no continuity across reports; though process parameters like temperature and pH
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8

Smith, Paul. "Electrical characterisation of free standing multiwalled carbon nanotubes." Thesis, University of Surrey, 2006. http://epubs.surrey.ac.uk/843093/.

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Two terminal electrical measurements of freestanding multiwalled carbon nanotubes employing tunnelling contacts have been made. Previous electrical characterisation on both single and multiwalled carbon nanotubes have revealed a zero bias anomaly, in which the current is characterised by a power law (I &prop; Va+1). In the case of single wall nanotubes this behaviour has been explained within Luttinger liquid theory, the strong repulsive electron-electron interactions found in one dimension causing Fermi liquid theory to break down. The origin of the power law in the characteristics of multiwa
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9

Takesue, I., J. Haruyama, N. Kobayashi, et al. "Superconductivity in Entirely End-Bonded Multiwalled Carbon Nanotubes." American Physical Society, 2006. http://hdl.handle.net/2237/8849.

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10

Gopee, Vimal C. "Vertically aligned multiwalled carbon nanotubes as electronic interconnects." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/813191/.

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The drive for miniaturisation of electronic circuits provides new materials challenges for the electronics industry. Indeed, the continued downscaling of transistor dimensions, described by Moore’s Law, has led to a race to find suitable replacements for current interconnect materials to replace copper. Carbon nanotubes have been studied as a suitable replacement for copper due to its superior electrical, thermal and mechanical properties. One of the advantages of using carbon nanotubes is their high current carrying capacity which has been demonstrated to be three orders of magnitude greater
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11

Subramanian, Arunkumar. "Batch fabricated, supermolecular transducers based on multiwalled carbon nanotubes /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17568.

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12

Mkhondo, N. B. "Electrochemical performance of metal oxide dooped multiwalled carbon nanotubes." Thesis, University of Limpopo, 2015. http://hdl.handle.net/10386/1439.

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Thesis (M.Sc. (Chemistry)) -- University of Limpopo, 2015<br>The study has focused on the effects of different acids treatments on the nanostructure of MWCNTs; doping metal oxides (copper oxide (CuO), Iron (III) oxide (Fe2O3), nickel oxide (NiO) and cobalt oxide (Co3O4)) on MWCNTs and investigates their electrochemical hydrogen and energy storage capabilities. Fourier transform infrared (FTIR) confirmed the formation of functional groups on the surface of the acid treated MWCNTs. X-ray diffraction (XRD) showed that the graphitic structure of the MWCNTs was retained after treatment with m
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Honorio, Jaqueline Gonçalves 1988. "Modulação da genotoxicidade do 1-Nitropireno por nanotubos de carbono de paredes múltiplas." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267771.

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Orientadores: Gisela de Aragão Umbuzeiro, Vitor Rafael Coluci<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Tecnologia<br>Made available in DSpace on 2018-08-20T12:15:06Z (GMT). No. of bitstreams: 1 Honorio_JaquelineGoncalves_M.pdf: 1809951 bytes, checksum: 7885a8cfa050d72f934edad04cce0f92 (MD5) Previous issue date: 2012<br>Resumo: Nanomateriais, tais como nanotubos de carbono de paredes múltiplas (MWCNT) têm apresentado potencial para remediação de águas e solos poluídos por compostos orgânicos devido a sua área superficial elevada, que pode melhorar a capacida
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14

Ichkitidze, L. P., V. M. Podgaetsky, S. V. Selishchev, E. V. Blagov, V. A. Galperin, and Yu P. Shaman. "Laser Stimulation the Electroconductivity of Composite Layers with Multiwalled Carbon Nanotubes." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35631.

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Electroconductivity laser stimulation (irradiation) of composite layers based on carboxymethyl cellu-lose (CMC) and multiwalled carbon nanotubes (MWCNT) has been researched. The layers were deposited on the following substrates: flexible such as polyimide, polyester, aluminum foil paper, cotton fabric and shop paper (~80 g/m2]; hard substrates such as Si/SiΟ2 and cover glass. The conductivity of layers with thickness 0.5 10 μm was improved more on 500 % /(W/cm2) after laser stimulation (wavelength 970 nm, emission specific power PS~0.051 W/cm2, concentration C~0.05 wt.% MWCNT). When you are
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15

Muhlbauer, Rachel Lynn. "Investigation of the structure-property-processing relationships in paper and carbon nanotube composite materials." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54022.

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In this research, multiwalled carbon nanotube (MWNT) and paper composite materials were fabricated by dropcasting aqueous dispersions containing MWNTs onto filter paper using vacuum filtration, a highly unidirectional drying technique. By varying the pore size of the paper backbone as well as the number of deposited MWNT layers, composites with distinct architectures and properties were created. This thesis provides numerous examples that show how the processing methodology used influences the location of the MWNTs, the amount of MWNTs deposited, and the interaction between the MWNTs and the p
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16

Kaur, Aman Preet. "N-DOPED MULTIWALLED CARBON NANOTUBES: FUNCTIONALIZATION, CHARACTERIZATION AND APPLICATION IN LI ION BATTERIES." UKnowledge, 2013. http://uknowledge.uky.edu/chemistry_etds/18.

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The focus of this dissertation is to utilize chemical functionalization as a probe to investigate the reactivity of N-doped multiwalled carbon nanotubes (N-MWCNTs). The surface of N-MWCNTs, being a set of potentially reactive graphene edges, provides a large number of reactive sites for chemical modification, so considerable changes in chemical and physical properties can be envisaged. We observed that both reduction (dissolving metal reduction/alkylation) and oxidation (H2SO4/HNO3 and H2SO4/KMnO4 mixtures) of N-MWCNTs lead to formation of interesting spiral channels and spiraled carbon nanori
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17

Moraes, Adriel dos Santos 1976. "Administração de nanotubos de carbono "multiwalled" in vivo ativa citotoxicidade tumor-específica de linfócitos T CD8+." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259942.

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Orientador: Vitor Baranauskas<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-20T09:27:39Z (GMT). No. of bitstreams: 1 Moraes_AdrieldosSantos_M.pdf: 1300108 bytes, checksum: bcd1099ef486cc4a2842627fe2b4df57 (MD5) Previous issue date: 2012<br>Resumo: A administração "in vivo" de nanotubos de carbono "multi-walled" (MWCNT's), mesmo sem serem funcionalizados, estimula o aparecimento de uma reposta imune em camundongos normais. Nesse trabalho nós fornecemos evidências de que essas nanopartícula
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18

Kasaliwal, Gaurav. "Analysis Of Multiwalled Carbon Nanotube Agglomerate Dispersion In Polymer Melts." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-85460.

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For the commercial success of polymer - multiwalled carbon nanotube (MWNT) composites the production of these materials on industrial scale by melt processing is of significant importance. The complete dispersion of primary MWNT agglomerates in a polymer melt is difficult to achieve, making it an important and challenging technological problem. Hence, it is necessary to understand the process of MWNT agglomerate dispersion in a polymer melt. Based on an intensive literature research on mechanisms and influencing factors on dispersion of other agglomerated nanostructured fillers (e.g. carbon bl
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19

Melnyk, I. A., V. V. Klepko, and N. I. Lebovka. "Effect of Molecular Weight on the Properties of Polyethyleneglycols Doped with Multiwalled Carbon Nanotubes." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42546.

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The aim of this study is to analyze the changes in the structure, thermal properties and electrophysical behavior of polyethylene glycol doped with multiwalled carbon nanotubes. The differential scanning calorimetry and electrical conductivity methods were used to study influence of doping multiwalled carbon NTs on the properties of polyethylene glycol of different molecular weights, Mw (PEG-400, PEG-1000, PEG- 10000). Dependencies of the polymers degree of crystallinity and temperature behavior of conductivity on the concentration of NTs were researched. The obtained data indicates a strong
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20

Gao, Ting. "Energy-based Model of Multiwalled Carbon Nanotubes: Atomistic-to-Continuum Approach Including Nonlocal Interactions." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1368199652.

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21

Kane, David Alan. "Penetration Depth Variation in Atomic Layer Deposition on Multiwalled Carbon Nanotube Forests." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7124.

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Atomic Layer Deposition (ALD) of Al2O3 on tall multiwalled carbon nanotube forests shows concentration variation with the depth in the form of discrete steps. While ALD is capable of extremely conformal deposition in high aspect ratio structures, decreasing penetration depth has been observed over multiple thermal ALD cycles on 1.3 mm tall multiwalled carbon nanotube forests. SEM imaging with Energy Dispersive X-ray Spectroscopy elemental analysis shows steps of decreasing intensity corresponding to decreasing concentrations of Al2O3. A study of these steps suggests that they are produced by a
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22

Siswana, Msimelelo Patrick. "Electrocatalytic detection of pesticides with electrodes modified with nanoparticles of phthalocyanines and multiwalled carbon nanotubes." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1002613.

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Three types of electrodes: carbon paste electrodes modified with nanoparticles of metallophthalocyanines (MPcNP-CPEs, M = Mn, Fe, Ni, Co), basal plane pyrolytic graphite electrodes modified with iron or nickel phthalocyanine nanoparticles and multiwalled carbon nanotube composites (FePcNP/MWCNT-BPPGE or NiPcNP/MWCNT-BPPGE),and basal plane pyrolytic graphite electrodes modified with multiwalled carbon nanotubes and electropolymerized metal tetra-aminophthalocyanines (poly-MTAPc-MWCNT-BPPGE), where M is Mn, Fe, Ni or Co, were prepared. Electrochemical characterizations showed that faster electro
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23

Pallikonda, Mahesh Kumar Pallikonda. "FORMING A METAL MATRIX NANOCOMPOSITE (MMNC) WITH FULLY DISPERSED AND DEAGGLOMERATED MULTIWALLED CARBON NANOTUBES (MWCNTs)." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1503937490966191.

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24

Nagai, Hirotaka. "Diameter and rigidity of multiwalled carbon nanotubes are critical factors in mesothelial injury and carcinogenesis." Kyoto University, 2012. http://hdl.handle.net/2433/157431.

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25

Babaev, A. A., P. P. Khokhlachev, Yu A. Nikolaev, et al. "Temperature Dependence of Resistivity and Current-Voltage Characteristics of the Films of Composites Based on Modified Carbon Multiwalled Nanotubes and Graphite." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35160.

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A film composites based on modified multiwalled carbon tubes and polymer (95/5 wt. %) Respectively on paper, without the paper by directional spinning from the liquid phase and graphite. The temperature dependence of the resistivity () in the range T 77-410 K and the corresponding current-voltage charac-teristics. Detected irreversible transitions from semiconducting to metallic conductivity in carbon nono-trubkah and a maximum at T 340 K. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35160
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Ibrar, Muhammad. "Microstructure of Fe-based and NiFe nanowires encapsulated by multiwalled carbon nanotube radial structures." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/36222.

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The crystalline iron-based nanowires encapsulated by multiwalled carbon nanotubes have been the subject of numerous studies owing to the range of potential applications. The presence of a-Fe (bcc)/y -Fe(fcc) junctions o ers the possibility of exploitation of the exchange bias effect, an interfacial magnetic phenomenon that plays a major role in magnetocaloric cooling, spintronic and high-density magnetic storage devices. This work is concerned with the synthesis and microstructural characterization of Fe-based and NiFe nanowires encapsulated by multiwall carbon nanotube radial structures. The
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Kumar, Rishi. "Manufacturing of High Performance Polymer Nanocomposites Containing Carbon Nanotubes And Carbon Nanofibers Using Ultrasound Assisted Extrusion Process." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1291639408.

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28

Bolbukh, I. M., G. S. Gunko, G. Yu Yurkov, G. P. Prokhodko, and V. A. Tertykh. "Nanocomposites Based on Chitozan and Carbon Nanotubers with Iron Oxides Formed by in situ Precipitation." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35367.

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Composites which contain iron oxide nanoparticles and unmodified or aminated silica were synthesised by in situ precipitation of ferrous salts in chitozan or glucose solution. Nanocomposites based on oxidized or aminated carbon nanotubers were obtained by immobilizing oxide nanoparticles in surface layer during salt precipitation in water dispersion. The metal-containing phase was obtained by the Elmore reaction using different ratios of ferrous ammonium sulfate hexahydrate (FeSO4∙(NH4)2SO4∙6H2O) and ferric chloride hexahydrate (FeCl3∙6H2O). The composites obtained were characterized usin
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De, Silva Gardiyawasam L. Thushani Thilanjani. "ALL SOLID-STATE FLEXIBLE SUPERCAPACITORS WITH VERTICALLY ALIGNED MULTIWALLED CARBON NANOTUBES (MWCNT) SYNTHESIZED DIRECTLY ON METAL FOIL." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/theses/2588.

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This work is mainly focused on the investigation on all solid-sate flexible supercapacitors using MWCNT directly grown on Inconel foil. Detail physical characterization of the as grown MWCNTs were performed using Scanning Electron Microscopy (SEM), Raman and Specific surface area measurement (SSA). SSA evaluated using volumetric adsorption isotherm measurements show that such MWCNTs have effective surface area of ~ 30m2/g. These as grown MWCNT on metals foils were used to fabricate the Electrochemical Double Layer Capacitors (EDLC) or Supercapacitors. A poly(vinyl alcohol)/phosphoric acid (PVA
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Pedroni, Lucas Gomes. "Nanocompositos elastomericos baseados em MWCNTs : preparação, caracterização, e aplicações." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248452.

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Orientadores: Ana Flavia Nogueira, Maria Isabel Felisberti<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-13T13:37:27Z (GMT). No. of bitstreams: 1 Pedroni_LucasGomes_M.pdf: 2275674 bytes, checksum: 3829c2b15fd56db6cd84d632bf86508b (MD5) Previous issue date: 2009<br>Resumo: Nanocompósitos poliméricos baseados em nanotubos de carbono possuem um dos mais elevados potenciais tecnológicos devido à possibilidade de produção de materiais com destacadas propriedades mecânicas, alta condutividade elétrica em baixos teores (ba
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Lewis, Todd M. "Carbon Nanotube Composites Prepared by Ultrasonically Assisted Twin Screw Extrusion." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1405330978.

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32

Ezat, Gulstan S. "The influence of multi-walled carbon nanotubes on the properties of polypropylene nanocomposite : the enhancement of dispersion and alignment of multiwalled carbon nanotube in polypropylene nanocomposite and its effect on the mechanical, thermal, rheological and electrical properties." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5703.

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Carbon nanotubes are known as ideal fillers for polymer systems; the main advantage of carbon nanotubes over other nano-reinforcing particles is the combination of superior strength and stiffness with large aspect ratio. Carbon nanotubes may improve the mechanical, electrical and thermal properties of polymers, but to realise their potential in polymer systems uniform dispersion, strong interfacial adhesion and alignment of nanotubes within the polymer matrix are necessary. These properties are not easy to achieve and they are key challenges in producing CNT/Polymer system. This research was c
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Bardash, Liubov, and Liubov Bardash. "Synthesis and investigation of nanostructured polymer composites based on heterocyclic esters and carbon nanotubes." Phd thesis, Université Claude Bernard - Lyon I, 2011. http://tel.archives-ouvertes.fr/tel-00821160.

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The thesis relates to synthesis and investigation of nanostructured polymer composites based on oligomers of cyanate esters of bisphenol a (DCBA) or cyclic butylene terephthalate (CBT) and multiwalled carbon nanotubes (MWCNTS). Catalytic effect of mwcnts in process of DCBA polycyclotrimerization as well as in cbt polymerization has been observed. Significant increase in crystallization temperature of nanocomposites based on polybutylene terephthalate (cPBT) with adding of MWCNTS is observed. The effect of processing method of cpbt/mwcnts nanocomposites on its electrical properties has been fou
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Buchoux, Julien. "Nanotubes de carbone comme sondes en microscopie à force atomique : nanomécanique et étude à l’interface air-liquide de fluides complexes." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14221/document.

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La microscopie à force atomique exploite les interactions entre une sonde et un échantillon. Les nanotubes de carbone représentent la sonde idéale, ils sont: fins, robustes, peu réactifs et ont un haut rapport d'aspect. L'utilisation à grande échelle des sondes à nanotubes de carbone passe par l'étude de leur comportement mécanique en contact avec une surface. Nous étudions deux types de sondes: les sondes avec nanotubes multiparois et les sondes avec nanotubes monoparois. Pour les nanotubes multiparois nous avons utilisé trois mode de fonctionnement AFM différents que sont les modes contact,
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Nebipasagil, Ali. "Chemically and Photochemically Crosslinked Networks and Acid-Functionalized Mwcnt Composites." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/42703.

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PTMO-urethane and urea diacrylates (UtDA, UrDA) were synthesized from a two-step reactions of bis (4-isocyanatocyclohexyl) methane (HMDI) with either α,Ï -hydroxy-terminated poly (tetramethylene oxide) (PTMO Mn 250, 1000, 2000 and 2900 g/mol) or α,Ï -aminopropyl-terminated PTMO and 2-hydroxyethyl acrylate (HEA). PTMO-based ester precursors (EtDA) were also synthesized from α,Ï -hydroxy-terminated PTMO (Mn 1000 and 2000 g/mol). Two bis acetoacetates were synthesized from acetoacetylation of 1,4-butanediol and 250 g/mol hydroxy-terminated PTMO with tert-butyl acetoacetate. 1H NMR spectroscopy
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Peña, Roselyn Millaray Castañeda. "Fabricação, caracterização do comportamento eletroquímico e aproveitamento analítico de eletrodos modificados para a determinação de peróxido de hidrogênio." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-05122011-152041/.

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Neste trabalho são apresentados resultados sobre o desenvolvimento de um sensor visando à utilização no monitoramento de peróxido de hidrogênio em amostras de reações Fenton. Superfícies eletródicas modificadas com filmes de poli-azul de metileno (PMB) e óxido de rutênio de hexacianoferrato (RuOHCF) sem e com a incorporação de nanotubos de carbono de paredes múltiplas (MWCNTs) foram utilizadas para a detecção amperométrica de peróxido de hidrogênio. O efeito da ordem de deposição do PMB e MWCNT foi avaliado por voltametria cíclica e espectroscopia de impedância eletroquímica. Estudos realizado
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Marijana, Kragulj. "Uticaj ugljeničnih nanomaterijala na ponašanje odabranih hidrofobnih organskih jedinjenja u akvatičnim sistemima." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2013. https://www.cris.uns.ac.rs/record.jsf?recordId=83677&source=NDLTD&language=en.

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U prvom delu rada ispitana je adsorpcija četiri grupe organskih&nbsp;jedinjenja: (1) nitroaromatičnih (nitrobenzen), (2) nepolarno alifatičnih&nbsp;(heksan), (3)&nbsp; monoaromatičnih (benzen, toluen, 1,2,3- i 1,2,4-trihlorbenzen) i (4) policikličnih aromatičnih ugljovodonika, PAH&nbsp;(naftalen, fenantren, piren i fluoranten) na vi&scaron;eslojnim ugljeničnim&nbsp;nanocevima (od eng. multiwalled carbon nanotubes, MWCNTs). Cilj&nbsp;ovog dela rada bio je pronaći korelaciju između parametara adsorpcije i&nbsp;fizičko-hemijskih karakteristika organskih molekula, kao i parametara&nbsp;adsorpcije
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38

Bardash, Liubov. "Synthesis and investigation of nanostructured polymer composites based on heterocyclic esters and carbon nanotubes." Thesis, Lyon 1, 2011. http://www.theses.fr/2011LYO10174/document.

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La thèse concerne les synthèse et caractérisation de composites polymères nanostructurés à base d’esters de cyanates de bisphénol a (DCBA) ou à base d’oligomères cycliques de butylène téréphtalate (CBT) et de nanotubes de carbone multi-parois (MWCNTS). L’effet catalytique des nanotubes de carbone sur la polycyclotrimerisation de DCBA et aussi sur la polymérisation du CBT est observé. L’augmentation de la température de cristallisation a été fixée pour tous les échantillons de nanocomposites à base de polybutylène téréphtalate (cPBT). L’effet de la méthode de mise en forme de cPBT/MWCNTS sur se
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39

Ndzimandze, Thembinkosi Mpendulo. "Phosphorylation of multiwalled carbon nanotubes." Thesis, 2009. http://hdl.handle.net/10210/2503.

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M.Sc.<br>Carbon nanotubes are among the most exciting new materials being investigated and synthesized, owing to their outstanding mechanical, electronic and optical properties. For more than a decade, the translation of these properties into realistic applications has been hindered by solubility and processing difficulties. Recently the development of efficient methodologies for covalent chemical modification has raised hope for the use of these materials in various fields of application such as biosensors, vaccine and drug delivery systems, medical imaging, biomaterials, water purification,
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40

Sahoo, Manoj Kumar. "Unzipping of Multiwalled Carbon Nanotubes." Thesis, 2013. http://ethesis.nitrkl.ac.in/5025/1/411PH2114.pdf.

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Carbon nanotubes (CNTs) were first brought to the attention of greater scientific community by S. Ljima of Japan in 1991. CNTs are members of the fullerene (C60) structural family. Their name is derived from their long and hollow structures with the walls formed by one atom thick sheets of carbon, called graphene. This graphene is a two-dimensional (2D) material exhibits exceptionally high crystal and electronic quality. Despite its short history it has already revealed a cornucopia of new physics and potential applications due to high charge carrier mobility, exceptional mechanical and electr
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41

Li, Shih-Ci, and 黎世棊. "Glucose Biosensors Based on Multiwalled Carbon Nanotubes/Nafion/GOD Nanocomposite and Multiwalled Carbon Nanotubes/Polypyrrole/GOD Nanocomposite." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/67374755640206369833.

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碩士<br>國立中興大學<br>化學工程學系<br>93<br>Novel electroanalytical sensing nanobiocomposite materials are reported. Two methods of preparation of the glucose biosensors based on multi-walled carbon nanotubes (MWNTs) are investigated. The first one is prepared by a simple cast deposition on glassy carbon electrodes (GCE) with mixing MWNTs, Nafion, and a glucose oxidase (GOD) in appropriate amounts. The MWNTs are cylindrical with a diameter in the range of 40 – 60 nm and with a length of up to several micrometers and provide electrical conductivity. Nafion acts as a polymer backbone to give stable and homo
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42

Su, Jen-Hong, and 蘇哲弘. "Characterization of Selective-Oxidized Multiwalled Carbon Nanotubes." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/93421728356985196230.

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碩士<br>國立中正大學<br>化學工程所<br>94<br>This study uses temperature programmed oxidation (TPO) to purify the MWNTs in air, performs a two-step modified process, carries out the oxidation in air followed by chemical treatment, and studies the electrochemical characteristics of these oxidized MWNTs electrode for the supercapacitor applications. Raw MWNTs were oxidized by an 8-step program in air. In step 3 (400-450℃), the weight of MWNTs increases, reaches a maximum, and then decreases with increasing the temperature. These oxidized MWNTs are confirmed to possess the best purity through the textu
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43

Lee, Ji-sheng, and 李吉生. "Fabrication of Micro Hygrometers by Multiwalled Carbon Nanotubes." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/u2ywnc.

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碩士<br>大同大學<br>光電工程研究所<br>95<br>Fabrication of gas sensor, hygrometer and thermometer which based on carbon nanotubes (CNTs) is demonstrated. The thermally grown silicon dioxide (SiO2) on the p-type silicon wafer was used as the substrate. The sensor contains metal electrodes which were designed as the interdigitated pattern and the CNTs were interlinked with the electrodes by dielectrophoresis (DEP) method. An integrated thermocouple as temperature detector, and a micro heater was also fabricated. The experiments were performed in a plastic desiccator which contains the exsiccative and sealed
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44

Yu-Feng, Hsiou. "Growth and Transport Properties of Individual Multiwalled Carbon Nanotubes." 2005. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-0507200512095300.

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Hsieh, Tsung-Lin, and 謝宗霖. "Field emission of close-tipped multiwalled individual carbon nanotubes." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/21884590678086801247.

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碩士<br>國立中興大學<br>物理學系所<br>97<br>In this experiment, we used the method of electron-beam lithography to make the field emission samples of close-tipped multiwalled individual carbon nanotubes. After getting the samples, we measured them in high vacuum system and used the Flower-Nordheim equation to analyze the data. Than we can get the field enhancement factor β and field emission turn-on voltage Vto. We focused on the relationship between the field enhancement factor β、turn-on voltage Vto and the geometric condition of our field emission samples. After measured these samples successfully, the
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Hsiou, Yu-Feng, and 修宇鋒. "Growth and Transport Properties of Individual Multiwalled Carbon Nanotubes." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/61593364588525867182.

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博士<br>國立臺灣大學<br>電機工程學研究所<br>93<br>We have synthesized multiwalled carbon nanotubes by using thermal chemical vapor deposition (CVD) method on Si chips with pre-patterned iron pads. Standard photolithography and e-beam lithography techniques were exploited to make electrodes for transport measurements. Cr was selected as the electrode material because of the contact resistance is relatively small (~1kΩ) and does not change with temperature and magnetic field. The current-voltage (IV) characteristics generally showed nonlinear behavior at temperatures below 4.2K. This is attributed to the Coulou
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47

Kao, Yin-Yao, and 高穎耀. "Field emission of open-tipped multiwalled individual carbon nanotubes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/56540310510494015731.

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碩士<br>國立中興大學<br>物理學系所<br>96<br>In the experiment, we used the method of electron-beam lithography to make field emission samples of open-tipped multiwalled individual carbon nanotubes. The completed samples were measured in a high vacuum system. Following measurement, we used the Fowler-Nordheim equation to analyze the emission current-voltage relations, which then yielded the field enhancement factor β and the threshold voltage Vto. The focus of this experiment is the relationship between the field enhancement factor β, the threshold voltage Vto and the geometric status of the field emission
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Chen, Yu-Chang, and 陳昱菖. "Study of Elastomer/Multiwalled Carbon Nanotubes Nanocomposites Compound material." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/54597214055983539395.

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碩士<br>高苑科技大學<br>高分子環保材料研究所<br>95<br>Multi-walled carbon nanotubes (MWNTs) with acyl chloride functional groups and a metallocene polyethylene-octene elastomer (POE) or an acrylic acid grafted metallocene polyethylene-octene elastomer (POE-g-AA) were used to prepare hybrids (POE/MWNTs or POE-g-AA/MWNTs) using a melting method, with a view to identifying a hybrid with improved thermal properties. Hybrids were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetry analysis (TGA),TRANSMISSION ELECTRON MICROSCOPE(TEM),and scanning electron micr
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Oliveira, Ana Rita Lino. "Heavy metal ions removal from aqueous solutions by Multiwalled Carbon Nanotubes." Master's thesis, 2016. http://hdl.handle.net/10316/81608.

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Dissertação de Mestrado Integrado em Engenharia Química apresentada à Faculdade de Ciências e Tecnologia<br>Os nanotubos de carbono são das nanopartículas mais estudadas na atualidade, conseguindo abranger, através das suas propriedades físicas, químicas e elétricas, inúmeras áreas científicas. No entanto, atingir um elevado grau de dispersão destas nanopartículas, livre de agregados, é uma das principais dificuldades, tornando-se também um problema em termos da eficácia dos nanotubos de carbono para com os objetivos definidos. Neste trabalho, três tipos de surfactantes foram estudados - SDBS
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Li, Ying, and 李穎. "Biopolymers - multiwalled carbon nanotubes composite electrodes for the neurotransmitters sensors." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/jb98u9.

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碩士<br>國立臺北科技大學<br>生物科技研究所<br>96<br>Part I：A novel biocomposite film(MWCNTs-PNDGAChi)which contains multi-walled carbon nanotubes(MWCNTs)along with the incorporation of poly(nordihydroguaiaretic acid) and chitosan co-polymer (PNDGAChi) has been synthesized on gold electrode by potentiostatic methods. The presence of both MWCNTs and PNDGAChi in the biocomposite film enhances the surface coverage concentration (Γ), increases the electron transfer rate constant (Ks) and decreases the degradation of PNDGAChi during the cycling. The biocomposite film also exhibits a promising enhanced electrocatalyt
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