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Data publikacji: 11 września 2023

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1

Farhat, Hootan. "Raman spectroscopy of metallic carbon nanotubes." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59217.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2010.<br>Includes bibliographical references (p. 101-108).<br>Metallic carbon nanotubes are one dimensional conductors that are both technologically promising for electronic applications, and scientifically interesting for studying the physics of low dimensional materials. In this thesis, we present a detailed study of the inelastic light scattering (Raman) spectrum of individual metallic carbon nanotubes, with a focus on the influence of electronic excitations and charged carriers. We have demo

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2

Rauf, Hendrik. "Metallic Ground State of Functionalized Carbon Nanotubes." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1184153423397-79783.

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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 SWCNT are arranged in bundles of some ten nanotubes with a random distribution of semiconducting and metallic tubes. They are thus one-dimensional objects embedded in a three-dimensional arrangement, the bundles. In this thesis, the metallic ground state of one-dimensional (1D) and three-dimensional

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Rauf, Hendrik. "Metallic Ground State of Functionalized Carbon Nanotubes." Doctoral thesis, Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A24959.

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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 SWCNT are arranged in bundles of some ten nanotubes with a random distribution of semiconducting and metallic tubes. They are thus one-dimensional objects embedded in a three-dimensional arrangement, the bundles. In this thesis, the metallic ground state of one-dimensional (1D) and three-dimensional

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4

Height, Murray John 1975. "Flame synthesis of carbon nanotubes and metallic nanomaterials." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/49807.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2003.<br>Includes bibliographical references.<br>Carbon nanotubes are a remarkable material with many appealing properties. Despite the appeal of this material, there are few synthesis techniques capable of producing nanotubes in large quantities at low-cost. The broad objective of this study was to examine the potential of a premixed flame for the synthesis of carbon nanotubes with the view that flame synthesis may prove a means of continuous production at low-cost. The specific approach focused on the form

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5

Zienert, Andreas. "Electronic Transport in Metallic Carbon Nanotubes with Metal Contacts." Doctoral thesis, Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-108205.

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The continuous migration to smaller feature sizes puts high demands on materials and technologies for future ultra-large-scale integrated circuits. Particularly, the copper-based interconnect system will reach fundamental limits soon. Their outstanding properties make metallic carbon nanotubes (CNTs) an ideal material to partially replace copper in future interconnect architectures. Here, a low contact resistance to existing metal lines is crucial. The present thesis contributes to the theory and numerical description of electronic transport in metallic CNTs with metal contacts. Different theo

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6

Lewis, Peter. "Investigations into hybrids of carbon nanotubes and organo-metallic molecular systems." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.642027.

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Endohedral functionalization via supercritical CO2 was undertaken in order to produce encapsulation of organometallic systems that are difficult to encapsulate otherwise due to either their large size or extreme air sensitivity. Organometallic molecular systems from the prophyrin and phthalocyanine families (such as NiPc, ClAlPc and NiTPP) were successfully encapsulated inside of nanotubes with relatively large diameters (centred around 2 nm). This was assessed by a combination of high resolution transmission electron microscopy (HRTEM) and Raman spectroscopy. HRTEM revealed previously unrepor

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7

Nasuhoglu, Deniz. "Synthesis of carbon nanotubes on metallic grids for applications in electrochemical capacitors." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112580.

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Recently, there has been a growing demand for electrode materials to serve as electrochemical capacitors (EC). It has been an important issue to come up with environment friendly electric power sources to reduce pollution caused by combustion engines of automotive systems. Even though conventional battery systems and fuel cells supply high energy, they lack the high specific power that would be required for hybrid power sources. The ECs can fill the gap between conventional capacitors and batteries.<br>Carbon nanotubes (CNTs), discovered by Iijima in 1991, attracted great attention in recent y

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8

Villalpando, Páez Federico. "Raman spectroscopy of double walled carbon nanotubes with different metallic and semiconducting configurations." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59238.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2010.<br>Includes bibliographical references (p. 117-125).<br>A double-walled carbon nanotube (DWNT) provides the simplest system to study the interaction between concentric tubes in carbon nanotubes. The inner and outer walls of a DWNT can be metallic (M) or semiconducting (S), and each of the four possible configurations (MUM, M©S, SUS, S©M) has different electronic properties. We analyze the Raman spectra from undoped and boron-doped chemical vapor deposition-derived DWNT bundles (CVD-DWNTs)

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9

Conturbia, Giovanni de Lima Cabral. "Celulas solares baseadas em nanotubos de carbono modificado e nanoparticulas de ouro." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250676.

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Orientador: Ana Flavia Nogueira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-14T13:13:51Z (GMT). No. of bitstreams: 1 Conturbia_GiovannideLimaCabral_M.pdf: 7472586 bytes, checksum: 9ede857037431127443d2bed95bd1ccc (MD5) Previous issue date: 2009<br>Resumo:Células solares orgânicas têm despertado atenções devido ao baixo custo de produção e dos materiais utilizados, bem como devido à versatilidade química e de propriedades eletrônicas e ópticas dos semicondutores orgânicos. A eficiência atual atinge 5% (100 mWcm). N

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10

Luo, Weiqi. "Atomistic Materials Modeling of Complex Systems: Carbynes, Carbon Nanotube Devices and Bulk Metallic Glasses." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1218567734.

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Hu, Zhiyuan. "Encapsulation and targeted delivery of metallic species for biomedical imaging via functionalised carbon nanotubes nanocarriers." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.669017.

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This thesis focuses on designing and synthesis of novel molecular imaging probes based on non-covalent funtionalisation of pure single-walled carbon nanotubes (SWNTs). Several synthetic strategies for the supramolecular chemistry functionalisation of SWNTs, cytotoxicity measurements and cellular imaging of supramolecularly functionalised carbon nanotube probes are discussed. Chapter one is a literature review as the thesis Introduction. This describes aspects of the physical and chemical properties, structural importance and synthesis methods of single-walled carbon nanotubes (SWNTs), also ope

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12

SANCHEZ, RONALD BEYNER MEJIA. "SYNTHESIS AND CHARACTERIZATION OF NANOCOMPOSITES OF OXIDES AND METALLIC NICKEL FOR USE AS CARBON NANOTUBES CATALYST." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=23530@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>Foram desenvolvidos nanocompósitos de óxidos dopados com níquel metálico pelo processo Sol-Gel modificado pelo uso do PVA (Álcool Polivinílico) na função de matriz de crescimento dos nanocompósitos. Os precursores dos óxidos foram os nitratos de seus próprios metais. Foram sintetizados três tipos de nanocompósitos óxido de magnésio, óxido de alumínio e óxido de zinco. O trabalho envolveu quatro etapas principais: levant

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13

Chen, Zhihong. "Electric field induced transparency modulation in single wall carbon nanotube ultra-thin films and a method to separate metallic and semiconducting nanotubes." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0002404.

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14

Sun, Ying. "Mechanical properties of carbon nanotube/metal composites." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4611.

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Carbon nanotubes (CNTs) have captured a great deal of attention worldwide since their discovery in 1991. CNTs are considered to be the stiffest and strongest material due to their perfect atomic arrangement and intrinsic strong in-plane sp[super]2--sp[super]2 covalent bonds between carbon atoms. In addition to mechanical properties, CNTs have also shown exceptional chemical, electrical and thermal properties. All these aspects make CNTs promising candidates in the development of novel multi-functional nanocomposites. Utilizing CNTs as fillers to develop advanced nanocomposites still remains a

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15

Nguyen, Tuyet Trang. "Utilisation de nanotubes de carbone pour la préparation de catalyseurs confinés." Thesis, Toulouse, INPT, 2013. http://www.theses.fr/2013INPT0062/document.

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Ce travail de thèse est d’utilisation de nanotubes de carbon (NTCs) comme support pour confiner de nanoparticules métalliques ou comme gabarit pour le confinement de la phase active. Le chapitre I présente l’état actuel des connaissances sur les effets de confinement dans les NTCs. Le chapitre II décrit la préparation et la caractérisation de catalyseurs métalliques à base de ruthénium, de cobalt et de palladium, confinées à l’intérieur de NTCs. Dans ce cadre, l’étude de l’influence de différents paramètres tels que les conditions opératoires, la nature du métal ou du précurseur, ou un prétrai

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16

Mehedi, Hasan-Al. "Diamond nanostructure fabrication by etching and growth with metallic nanoparticles." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENT107/document.

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Le diamant est un matériau fascinant avec d'exceptionnelles propriétés physiques. Son application à divers domaines reste limitée parce que sa fabrication est difficile et nécessite des substrats et conditions spécifiques. En outre, les dispositifs de diamant tels que les capteurs nécessitent généralement la structuration et l'échelle micro ou nanométrique, et l'inertie chimique du diamant rend ce processus technologique plus difficile que celui des semiconducteurs réguliers. Il s'agit d'un besoin évident de la recherche fondamentale d’explorer de nouvelles façons de fabriquer des nanostructur

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17

Zienert, Andreas [Verfasser], Jörg [Akademischer Betreuer] Schuster, Thomas [Akademischer Betreuer] Geßner, Thomas [Gutachter] Geßner, and Michael [Gutachter] Schreiber. "Electronic Transport in Metallic Carbon Nanotubes with Metal Contacts / Andreas Zienert ; Gutachter: Thomas Geßner, Michael Schreiber ; Jörg Schuster, Thomas Geßner." Chemnitz : Universitätsbibliothek Chemnitz, 2013. http://d-nb.info/1214245250/34.

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Pozdnyakov, D. V., A. V. Borzdov, and V. M. Borzdov. "Calculation of Current-Voltage Characteristics of the Optimized Triode with a Cold Cathode Based on the Ordered Array of Single-Wall Metallic Carbon Nanotubes." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35361.

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The current-voltage characteristics of a triode with the plane-parallel electrodes and a cold cathode based on the ordered array of single-wall metallic carbon nanotubes with open ends have been calculated by means of a numerical solution of both the Poisson equation and the quantum-wave equation. The topological parameters of the triode have been optimized. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35361

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19

Berrada, Nawal. "De l’interêt du dichlore pour une élimination hautement sélective des impuretés métalliques et carbonées des nanotubes de carbone." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0164.

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Les nanomatériaux carbonés tels que les nanotubes de carbone (CNTs) et le graphène, suscitent un engouement certain dans toute la communauté scientifique depuis leur découverte. En effet, leur taille nanométrique et leur structure unique leur confèrent de nombreuses propriétés jusqu'alors inégalées par les matériaux connus. Grâce à leur nature « tout-carbone », ils sont stables chimiquement, possèdent une bonne tenue mécanique et une surface spécifique élevée. Cependant les échantillons produits et disponibles pour développer des applications contiennent inévitablement des impuretés (de nature

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20

Borkar, Tushar Murlidhar. "Processing and Characterization of Nickel-Carbon Base Metal Matrix Composites." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500026/.

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Carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) are attractive reinforcements for lightweight and high strength metal matrix composites due to their excellent mechanical and physical properties. The present work is an attempt towards investigating the effect of CNT and GNP reinforcements on the mechanical properties of nickel matrix composites. The CNT/Ni (dry milled) nanocomposites exhibiting a tensile yield strength of 350 MPa (about two times that of SPS processed monolithic nickel ~ 160 MPa) and an elongation to failure ~ 30%. In contrast, CNT/Ni (molecular level mixed) exhibited

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21

Nahle, Sara. "Réponse macrophagique aux nanomatériaux carbonés : effets de leur caractéristiques physiques et chimiques sur le transcriptome Carbon-based nanomaterials induce inflammation and autophagy in rat alveolar macrophages Single wall and multiwall carbon nanotubes induce different toxicological responses in rat alveolar macrophages Gene expression profiling of alveolar macrophages exposed to non-functionalized, anionic or cationic multi-walled carbon nanotubes shows three different mechanisms of toxicity Cytotoxicity and global transcriptional responses induced by zinc oxide nanoparticles NM 110 in PMA-differentiated THP-1 cells Protein and lipid homeostasis altered in rat macrophages after exposure to metallic oxide nanoparticles." Thesis, Université de Lorraine, 2019. http://www.theses.fr/2019LORR0142.

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Les nanomatériaux carbonés (NMC) sont très utilisés dans le monde industriel et leurs applications, nombreuses, sont en plein développement. L’absence de réglementation pour leur préparation et leur emploi fait qu’il est nécessaire comme pour tous les nano-objets, de déterminer le risque qu’une exposition fait courir à l’Homme et d’adapter la législation en conséquence. Une meilleure connaissance de leur potentiel toxique est donc nécessaire. Les difficultés de plus en plus grandes pour utiliser les modèles animaux, rend nécessaire le développement d’études avec des lignées cellulaires au sein

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Guo, Xuefei. "Development of Electrochemical Sensors for Biodegradable Metallic Implants and Development of a Label-free Biosensor for Bacteria." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342106824.

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Fiedler, Holger. "Preparation and characterization of Carbon Nanotube based vertical interconnections for integrated circuits: Preparation and characterization of Carbon Nanotube based verticalinterconnections for integrated circuits." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2013. https://monarch.qucosa.de/id/qucosa%3A20091.

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(ULSI) causes an increase of the resistance of the wiring system by increased scattering of electrons at side walls and grain boundaries in the state of the art Cu technology, which increases the RC delay of the interconnect system and thus degrades the performance of the device. The outstanding properties of carbon nanotubes (CNT) such as a large mean free path, a high thermal conductance and a large resistance against electromigration make them an ideal candidate to replace Cu in future feature nodes. The present thesis contributes to the preparation and properties of CNT based vertical inte

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Fiedler, Holger. "Preparation and characterization of Carbon Nanotube based vertical interconnections for integrated circuits." Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-149474.

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(ULSI) causes an increase of the resistance of the wiring system by increased scattering of electrons at side walls and grain boundaries in the state of the art Cu technology, which increases the RC delay of the interconnect system and thus degrades the performance of the device. The outstanding properties of carbon nanotubes (CNT) such as a large mean free path, a high thermal conductance and a large resistance against electromigration make them an ideal candidate to replace Cu in future feature nodes. The present thesis contributes to the preparation and properties of CNT based vertical inte

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25

Quernheim, Martin [Verfasser]. "From polyarylated cycloparaphenylenes to carbon nanotube segments and metallo N 4-macrocycles as fuel cell catalysts / Martin Quernheim." Mainz : Universitätsbibliothek Mainz, 2015. http://d-nb.info/1071434225/34.

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Zhang, Jie. "Contribution aux développements des technologies de compression polymères chargés pour la réalisation d'inserts métalliques micro-structurés." Thesis, Besançon, 2013. http://www.theses.fr/2013BESA2044/document.

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Les travaux menés dans le cadre de cette thèse sont focalisés sur les procédés deréplication permettant la transformation des mélanges en composants par les technologiesen séquentiel ou bien en continu, selon les applications visées. Les développementsconcernent la mise en place et l’hybridation de différents procédés de micro-réplication(estampage à chaud de polymère thermoplastique et par laminage circulaire entre deuxrouleaux). Ces deux procédés sont développés et optimisés pour l’élaboration decomposants micro-structurés ou de microcomposants possédant des propriétésfonctionnelles mécaniqu

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Hartmann, Steffen. "Thermo-Mechanische Charakterisierung von Grenzflächen zwischen Einwandigen Kohlenstoffnanoröhren und Metallen mittels Auszugsversuchen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-197660.

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Vor dem Hintergrund zukünftiger Sensoren, basierend auf dem piezoresistiven Effekt von einwandigen Kohlenstoffnanoröhren (SWCNT), werden in dieser Arbeit umfangreiche Ergebnisse zum mechanischen Verhalten von Grenzflächen zwischen SWCNTs und edlen Metallen am Beispiel von Pd und Au präsentiert. Im Fokus steht dabei die Synergie von rechnerischen und experimentellen Methoden Molekulardynamik (MD), nanoskalige Tests und Analytik , um (1) mit guter Genauigkeit maximale Kräfte von gezogenen SWCNTs, welche in Metall eingebettet sind, vorauszuberechnen und (2) einen wertvollen Beitrag zum Verständni

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Hartmann, Steffen. "Thermo-Mechanische Charakterisierung von Grenzflächen zwischen Einwandigen Kohlenstoffnanoröhren und Metallen mittels Auszugsversuchen." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2015. https://monarch.qucosa.de/id/qucosa%3A20402.

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Vor dem Hintergrund zukünftiger Sensoren, basierend auf dem piezoresistiven Effekt von einwandigen Kohlenstoffnanoröhren (SWCNT), werden in dieser Arbeit umfangreiche Ergebnisse zum mechanischen Verhalten von Grenzflächen zwischen SWCNTs und edlen Metallen am Beispiel von Pd und Au präsentiert. Im Fokus steht dabei die Synergie von rechnerischen und experimentellen Methoden Molekulardynamik (MD), nanoskalige Tests und Analytik , um (1) mit guter Genauigkeit maximale Kräfte von gezogenen SWCNTs, welche in Metall eingebettet sind, vorauszuberechnen und (2) einen wertvollen Beitrag zum Verständni

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"Magneto-optical spectroscopy of metallic carbon nanotubes." Thesis, 2010. http://hdl.handle.net/1911/62001.

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Through polarization-dependent magneto-optical absorption spectroscopy, the magnetic susceptibility anisotropy for metallic single-walled carbon nanotubes has been extracted and found to be up to 4x greater than values for semiconducting single-walled carbon nanotubes. Consistent with theoretical predictions, this is the first experimental evidence of the paramagnetic nature arising from the Aharonov-Bohm-phase-induced gap opening in metallic nanotubes. We also compare our values with previous work for semiconducting nanotubes, which confirm a break from the prediction that the magnetic suscep

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Zienert, Andreas. "Electronic Transport in Metallic Carbon Nanotubes with Metal Contacts." Doctoral thesis, 2012. https://monarch.qucosa.de/id/qucosa%3A19863.

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The continuous migration to smaller feature sizes puts high demands on materials and technologies for future ultra-large-scale integrated circuits. Particularly, the copper-based interconnect system will reach fundamental limits soon. Their outstanding properties make metallic carbon nanotubes (CNTs) an ideal material to partially replace copper in future interconnect architectures. Here, a low contact resistance to existing metal lines is crucial. The present thesis contributes to the theory and numerical description of electronic transport in metallic CNTs with metal contacts. Different theo

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Carrion, Enrique A. "Terahertz and Microwave Detection Using Metallic Single Wall Carbon Nanotubes." 2010. https://scholarworks.umass.edu/theses/476.

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Carbon nanotubes (CNTs) are promising nanomaterials for high frequency applications due to their unique physical characteristics. CNTs have a low heat capacity, low intrinsic capacitance, and incredibly fast thermal time constants. They can also exhibit ballistic transport at low bias, for both phonons and electrons, as evident by their fairly long mean free paths. However, despite the great potential they present, the RF behavior of these nanostructures is not completely understood. In order to explore this high frequency regime we studied the microwave (MW) and terahertz (THz) response of in

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32

Rauf, Hendrik [Verfasser]. "Metallic ground state of functionalized carbon nanotubes / vorgelegt von Hendrik Rauf." 2007. http://d-nb.info/985866012/34.

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Fu, Kan. "Metallic Carbon Nanotubes, Microwave Characterization And Development Of A Terahertz Detector." 2008. https://scholarworks.umass.edu/theses/113.

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It is reported that terahertz radiation from 0.69 to 2.54 THz has been sensitively detected in a device consisting of bundles of carbon nanotubes containing single wall metallic carbon nanotubes, quasi-optically coupled through a lithographically fabricated antenna, and a silicon lens. The measured data are consistent with a bolometric detection process in the metallic tubes and the devices show promise for operation well above 4.2 K. Microwave measurements have also been done up to 20GHz. Voltage responsivity got here is comparable to that of the Schottky diode detector. The detection at micr

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Barraza-Lopez, Salvador. "Theoretical study of carbon nanotubes adsorbed on the silicon (100) surface, and, explorations on the modulation of conductance for metallic carbon nanotubes /." 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3242791.

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Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006.<br>Source: Dissertation Abstracts International, Volume: 67-11, Section: B, page: 6455. Adviser: Karl Hess. Includes bibliographical references (leaves 86-88) Available on microfilm from Pro Quest Information and Learning.

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Wu, Cheng-Wei, and 吳健偉. "Oxidation of Propane over Transition Metallic Oxide Catalysts Supported on Multi-Wall Carbon Nanotubes." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/30165368590365472516.

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碩士<br>國立中興大學<br>化學工程學系<br>93<br>Owing to the properties of lower density, larger specific surface area, unique structure and adsorption, carbon nanotubes (CNTs) has become attractive and extensively applied in many researcher groups. In recent literatures, it has an excellent application in catalysis to use CNTs as a support in different catalytic reactions. In this study, CNTs are used as a support, and the supported metal oxide catalysts are prepared by impregnation method to perform with the propane oxidation reaction. Upon the surface treatment on CNTs, the original catalysts an

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Ferreira, Telma Joana Jesus. "Microinjection moulding of austenitic stainless steel reinforced with carbon nanotubes." Doctoral thesis, 2018. http://hdl.handle.net/10316/79576.

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Tese de doutoramento em Engenharia Mecânica, na especialidade de Nanomateriais e Microfabricação, apresentada ao Departamento de Engenharia Mecânica da Faculdade de Ciências e Tecnologia da Universidade de Coimbra<br>In the last decades, the metal powder injection moulding (MIM), in its different versions – micro MIM technology, is a manufacturing process consolidated as an effective and competitive alternative to produce small size and complex geometry of metallic parts in large scale, with high quality and reproducibility. The remarkable expansion in different industrial sectors requires a r

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RACHANA. "FIELD EMISSION OF ELECTRONS BY TAKING INTO ACCOUNT THE DISTRIBUTION OF CHARGE ALONG THE LENGTH OF METALLIC CARBON NANOTUBES (CNTS)." Thesis, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/19026.

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An mathematical expression has been derived and analysed for total potential energy V and field emission current density function ϕ of emitted electrons by taking into account the distribution of charge along the length of the carbon nanotubes (CNTs), matching to the representation for the tunnelling coefficient. This tunnelling coefficient is obtained from solving of the time independent Schrödinger’s wave equation. Mathematical calculations for the potential energy V, tunnelling coefficient T and current density function ϕ have been worked out for a distinctive set of the CNTs

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Verma, Rekha. "Investigation of Electro-thermal and Thermoelectric Properties of Carbon Nanomaterials." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3360.

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Due to the aggressive downscaling of the CMOS technology, power and current densities are increasing inside the chip. The limiting current conduction capacity(106 Acm−2)and thermal conductivity(201Wm−1K−1 for Al and 400 Wm−1K−1 for Cu) of the existing interconnects materials has given rise to different electro-thermal issues such a shot-spot formation, electromigration, etc. Exploration of new materials with high thermal conductivity and current conduction has thus attracted much attention for future integrated circuit technology. Among all the elemental materials, carbon nanomaterials (graphe

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Verma, Rekha. "Investigation of Electro-thermal and Thermoelectric Properties of Carbon Nanomaterials." Thesis, 2013. http://etd.iisc.ernet.in/2005/3360.

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Due to the aggressive downscaling of the CMOS technology, power and current densities are increasing inside the chip. The limiting current conduction capacity(106 Acm−2)and thermal conductivity(201Wm−1K−1 for Al and 400 Wm−1K−1 for Cu) of the existing interconnects materials has given rise to different electro-thermal issues such a shot-spot formation, electromigration, etc. Exploration of new materials with high thermal conductivity and current conduction has thus attracted much attention for future integrated circuit technology. Among all the elemental materials, carbon nanomaterials (graphe

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Barman, Barun Kumar. "Rational Design of Advanced Hybrid Nanostructures for Catalysis and Electrocatalysis." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2827.

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The hybrid nanostructures exhibit excellent performances in various fields such as catalysis, sensing, and energy conversion as compared to their individual ones. The thesis deals with the new methods for the synthesis of different type of hybrids with doped/pristine carbon nanostructures in the form of graphene, multiwall carbon nanotubes (MWCNTs) as one component and metals nanostructures (Ag, Pd, Pt and Au), carbide (Fe3C), metal chalcogenides (Ni3S2 and Co9S8) and oxide (CoO) as the other components. Various synthesis techniques such as modified galvanic replacement reaction at room temper

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Barman, Barun Kumar. "Rational Design of Advanced Hybrid Nanostructures for Catalysis and Electrocatalysis." Thesis, 2016. http://etd.iisc.ernet.in/handle/2005/2827.

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The hybrid nanostructures exhibit excellent performances in various fields such as catalysis, sensing, and energy conversion as compared to their individual ones. The thesis deals with the new methods for the synthesis of different type of hybrids with doped/pristine carbon nanostructures in the form of graphene, multiwall carbon nanotubes (MWCNTs) as one component and metals nanostructures (Ag, Pd, Pt and Au), carbide (Fe3C), metal chalcogenides (Ni3S2 and Co9S8) and oxide (CoO) as the other components. Various synthesis techniques such as modified galvanic replacement reaction at room temper

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Dai, Yong-Dun, and 戴永惇. "Enhancement of electrokinetic regeneration of carbon nanotubs by binary metallic oxide electrode." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/8s37x4.

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碩士<br>國立高雄大學<br>土木與環境工程學系碩士班<br>97<br>This study was focused tradition electrokinetic technology, it only except pollutant, but not degrade and destroy it. Using binary metallic oxide electrode combine the electrokinetic (BMOE-EK) technology to regeneration carbon nanotubs. It can effective to solve pollution, shortening completely to go on, will make traditional electrokinetic technology become the new technology that the environment continues the characteristic forever. Test regeneration and absorb enduring the carbon nanotubes and is in charge of of saturation nonylphenol, consider the

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Rex, A. "Physics Based Analytical Thermal Conductivity Model For Metallic Single Walled Carbon Nanotube." Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2096.

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Single-Walled Carbon Nanotube (SWCNT) based Very Large Scale Integrated circuit (VLSI) interconnect is one of the emerging technologies, and has the potential to overcome the thermal issues persisting even with the advanced copper based interconnect. This is because of it’s promising electrical and thermal transport properties. It can be stated that thermal energy transport in SWCNTs is highly anisotropic due to the quasi one dimensionality, and like in other allotropes of carbon, phonons are the dominant energy carriers of heat conduction. In case of conventional interconnect materials, coppe

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Rex, A. "Physics Based Analytical Thermal Conductivity Model For Metallic Single Walled Carbon Nanotube." Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2096.

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Single-Walled Carbon Nanotube (SWCNT) based Very Large Scale Integrated circuit (VLSI) interconnect is one of the emerging technologies, and has the potential to overcome the thermal issues persisting even with the advanced copper based interconnect. This is because of it’s promising electrical and thermal transport properties. It can be stated that thermal energy transport in SWCNTs is highly anisotropic due to the quasi one dimensionality, and like in other allotropes of carbon, phonons are the dominant energy carriers of heat conduction. In case of conventional interconnect materials, coppe

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Wei, Jin-Long, and 魏金龍. "Fabrication of Metallic Catalyst/Carbon Nanotube Composite Electrodes for Direct Methanol Fuel Cells." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/02752455518532282019.

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碩士<br>元智大學<br>化學工程與材料科學學系<br>97<br>This research was divided into two parts to explore. In the part 1, we used three different reduction methods to prepare the same ratios of Pt–Co/CNT catalysts. In the part 2, we used the method of microwave reduction to prepare three kinds of proportion of Pt–Co/MCMB catalysts. Part 1: The electrochemical activities of three types of Pt–Co/CNT catalysts, prepared from different Co depositions, in methanol oxidation have been investigated. X-ray diffraction reveals that these Pt–Co/CNT catalysts possess not only different crystalline sizes but also different

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Huang, Kuo-Hsuan, and 黃國軒. "Using TiO2 to Combine with metallic nanoparticles and Carbon Nanotube to Photodegrate the Azo Dye." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/00530146213324373675.

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碩士<br>國立雲林科技大學<br>環境與安全工程系碩士班<br>94<br>High BOD, COD, temperature and coloring of dye-house effluents are generally cleaned by combining biodegradation and physical-chemical treatment to improve degradation rate. However, these processes produce large quantities of waste sludges. Many researchers propose UV/TiO2 process to treat those dye-house effluents and to effectively de-color and mineralize dye. In this study, two types of composite materials, Fe-Ni/TiO2 powders and TiO2/CNT were fabricated and were used as photo-catalysts in UV/TiO2¬ process. And, chromium ions (Cr+6) were added as

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Kalbacova, Jana. "Micro- and tip-enhanced Raman spectroscopy of single-wall carbon nanotubes: from material studies to device applications." 2016. https://monarch.qucosa.de/id/qucosa%3A32569.

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Einwandige Kohlenstoffnanoröhrchen wurden aufgrund ihrer einzigartigen elektrischen, mechanischen und thermischen Eigenschaften 1991 in den Fokus der Forschung gerückt. In dieser Dissertation wird gezeigt, dass Ramanspektroskopie eine der besten Methoden ist, um die unterschiedlichen Eigenschaften der Nanoröhrchen wie ihren elektrischen Charakter (halbleitend oder metallisch), ihren Durchmesser, die Chiralität, Defekte oder auch Dotierung zu untersuchen. Die Charakterisierung dieser Eigenschaften wird sowohl für das reine Material als auch im elektrischen Bauteil, in diesem Fall einem Feldeffe

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MAREPALLY, BHANU CHANDRA. "Production of Solar Fuels using CO2." Doctoral thesis, 2017. http://hdl.handle.net/11570/3107057.

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Alla luce del recente allarmante tasso di esaurimento delle riserve di combustibili fossili e al contemporaneo drastico aumento dei livelli di CO2 nell'atmosfera, principale gas serra responsabile del riscaldamento globale e di cambiamenti climatici molto gravi, una delle priorità assolute nella ricerca a livello mondiale è quella di sfruttare il più possibile le fonti di energia rinnovabile. Una possibilità molto interessante è quella di realizzare un processo di riduzione della CO2 a combustibili liquidi che sfrutti energie rinnovabili, quale quella solare, mediante dispositivi più comunemen

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