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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Interfacial Toughening Of Carbon Fiber Reinforced Polymer (CFRP) Matrix Composites Using MWCNTs/Epoxy Nanofiber Scaffolds

Wable, Vidya Balu 05 1900 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / This study represents a cost-effective method to advance the physical and mechanical properties of carbon fiber-reinforced polymer (CFRP) prepreg composite materials, where electrospun multiwalled carbon nanotubes (CNTs)/epoxy nanofibers fabricated and deposited in between the layers of traditional CFRP prepreg composite. CNT-aligned epoxy nanofibers were uniformly formed by an optimized electrospinning method. Electrospinning is considered one of the most flexible, low-cost, and globally recognized methods for generating continuous filaments from submicron to tens of nanometer diameter. Nanofilaments were incorporated precisely on the layers of prepreg to accomplish increased adhesion and interfacial bonding, leading to increased strength and enhancements in more mechanical properties. As a result, the modulus of the epoxy and CNT/epoxy nanofibers were revealed to be 3.24 GPa and 4.84 GPa, leading to 49% enhancement. Furthermore, interlaminar shear strength (ILSS) and fatigue performance at high-stress regimes improved by 29% and 27%, respectively. Barely visible impact damage (BVID) energy improved considerably by up to 45%. The thermal and electrical conductivities were also increased considerably because of the highly conductive CNT networks present in between the CFRP layers. The newly introduced approach was able to deposit high content uniform CNTs at the ply interface of prepregs to enhance the CFRP properties, that has not been achieved in the past because of the randomly oriented high viscosity CNTs in epoxy resins.
42

INTERFACIAL TOUGHENING OF CARBON FIBER REINFORCED POLYMER (CFRP) MATRIX COMPOSITES USING MWCNTS/EPOXY NANOFIBER SCAFFOLDS

Vidya Balu Wable (10716303) 10 May 2021 (has links)
This study represents a cost-effective method to advance the physical and mechanical properties of carbon fiber-reinforced polymer (CFRP) prepreg composite materials, where electrospun multiwalled carbon nanotubes (CNTs)/epoxy nanofibers fabricated and deposited in between the layers of traditional CFRP prepreg composite. CNT-aligned epoxy nanofibers were uniformly formed by an optimized electrospinning method. Electrospinning is considered one of the most flexible, low-cost, and globally recognized methods for generating continuous filaments from submicron to tens of nanometer diameter. Nanofilaments were incorporated precisely on the layers of prepreg to accomplish increased adhesion and interfacial bonding, leading to increased strength and enhancements in more mechanical properties. As a result, the modulus of the epoxy and CNT/epoxy nanofibers were revealed to be 3.24 GPa and 4.84 GPa, leading to 49% enhancement. Furthermore, interlaminar shear strength (ILSS) and fatigue performance at high-stress regimes improved by 29% and 27%, respectively. Barely visible impact damage (BVID) energy improved considerably by up to 45%. The thermal and electrical conductivities were also increased considerably because of the highly conductive CNT networks present in between the CFRP layers. The newly introduced approach was able to deposit high content uniform CNTs at the ply interface of prepregs to enhance the CFRP properties, that has not been achieved in the past because of the randomly oriented high viscosity CNTs in epoxy resins.
43

Fabrication of Charged Fibrous Structures and their Applications in the Filtration and Separations

Bokka, Sreevalli 05 May 2022 (has links)
No description available.
44

A study on magnetic fluctuations over the ionospheric E-region driven by the lower atmospheric phenomena / 下層大気現象により駆動される電離圏 E領域上空磁場変動の研究

Nakanishi, Kunihito 23 March 2016 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第19507号 / 理博第4167号 / 新制||理||1598(附属図書館) / 32543 / 京都大学大学院理学研究科地球惑星科学専攻 / (主査)教授 家森 俊彦, 教授 田口 聡, 教授 余田 成男 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM
45

A study on the origin of small-scale field-aligned currents as observed in topside ionosphere at middle and low latitudes / 中低緯度電離圏上部で観測される微細沿磁力線電流の起源についての研究

Aoyama, Tadashi 23 March 2017 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第20183号 / 理博第4268号 / 新制||理||1613(附属図書館) / 京都大学大学院理学研究科地球惑星科学専攻 / (主査)教授 家森 俊彦, 教授 田口 聡, 教授 塩谷 雅人 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM
46

INTEGRATION OF CERAMIC-METAL VERTICALLY ALIGNED NANOCOMPOSITE THIN FILMS ON FLEXIBLE MICA SUBSTRATES

Juncheng Liu (13113660) 18 July 2022 (has links)
<p>  </p> <p>Integration of functional thin films on flexible substrates has piqued interests owing to the needs of flexible devices. Selecting a suitable flexible substrate is crucial for such integration. Recently, muscovite mica has been developed as a flexible platform for functional thin film epitaxy growth. Mica can be easily peeled off due to the weak van der Waals interaction between different layers of mica, along with other advantages including cheap, high elasticity and thermal stability, biocompatible, <em>etc</em>. On the other hand, vertically aligned nanocomposites (VANs) have been attractive because of their unique anisotropic structures, which can achieve physical property anisotropy, easy tunability, out-of-plane strain engineering as well as combined multifunctionality. However, limited work on the integration of nanocomposite thin films on mica with tunable physical properties has been reported due to growth challenges. </p> <p>In this dissertation, different ceramic-metal VAN systems integrated on mica substrates towards different functionalities using pulsed laser deposition (PLD) have been demonstrated. The first chapter is on the integration of BaTiO3-Au nanocomposite system on mica. Tunable optical properties have been achieved by controlling the geometries of the Au nanostructures between nanoparticles and nanopillars by varying the growth temperature. The laser energy was also found to play a role in terms of the Au pillar dimension. The second chapter is on the integration of BaZrO3-Co VAN system on mica towards flexible spintronics. Tunable, anisotropic ferromagnetic property has been realized by controlling the aspect ratio of the Co pillars. The third chapter is on integration of BaTiO3-Fe VAN system on mica towards multiferroics. Different buffer layers have been tried out to facilitate the growth of VAN structure. Room temperature ferroelectric and anisotropic ferromagnetic properties of the films have been confirmed. The last chapter is focused on multiphase nitride-metal nanocomposite design and integration, with films showing unique optical and magnetic properties. The reliability and stability of the physical properties of the films have been verified though bending tests. The growth mechanism and criteria of ceramic-metal nanocomposite on mica have also been discussed. These demonstrations all pave a new way towards the integration and design of multifunctional nanocomposites towards flexible nanodevices.</p>
47

Nonparametric Tests for Umbrella Alternatives in Stratified Datasets

Larock, Josh 15 August 2023 (has links)
This thesis considers the problem of hypothesis testing for umbrella alternatives when there are two groups, or strata, of observations. The proposed methods extend a previously established general framework of hypothesis testing based on rankings to stratified datasets by first aligning the strata. The tests based on the Spearman and Kendall distances between ranking vectors lead to the traditional aligned-rank tests and new methods which account for “misalignment” under the alternative hypothesis. Asymptotic null distributions and simulation studies are given for the Spearman distance. Diagnostic tools for the misalignment issue are illustrated alongside the proposed tests on a dataset of IQ scores of coma patients. Extensions to three or more strata and ”adaptive” tests are provided as future research directions.
48

Fabrication of high yield horizontally aligned single wall carbon nanotubes for molecular electronics

Ibrahim, Imad 25 April 2013 (has links)
The extraordinary properties of the single wall carbon nanotubes (SWCNTs) have stimulated an enormous amount of research towards the realization of SWCNT-based products for different applications ranging form nanocomposites to nanoelectronics. Their high charge mobility, exceedingly good current-carrying capacities and ability to be either semiconducting or metallic render them ideal building blocks for nanoelectronics. For nanoelectronic applications, either individual or parallel aligned SWCNTs are advantageous. Moreover, closely packed arrays of parallel SWCNTs are required in order to sustain the relatively large currents found in high frequency devices. Two key areas still require further development before the realization of large-scale nanoelectronics. They are the reproducible control of the nanotubes spatial position/orientation and chiral management. In terms of nanotube orientation, different techniques have been demonstrated for the fabrication of horizontally aligned SWCNTs with either post synthesis routes (e.g. dielectrophoresis and Langmuir-Blodgett approach) or direct growth (e.g. chemical vapor deposition (CVD)). The low temperature of the production process, allowing the formation of aligned nanotubes on pretty much any substrate, is the main advantage of the post synthesis routes, while the poor levels of reproducibility and spatial control, and the limited quality of the aligned tubes due to the inherently required process steps are limitations. The simplicity, up-scalability, along with the reproducible growth of clean high quality SWCNTs with well-controlled spatial, orientation and length, make CVD the most promising for producing dense horizontally well-aligned SWCNTs. These CVD techniques suffer some drawbacks, namely, that because they are synthesized using catalyst particles (metals or non-metals) the catalyst material can contaminate the tubes and affect their intrinsic properties. Thus, the catalyst-free synthesis of aligned SWNT is very desirable. This thesis comprises detailed and systematic experimental investigations in to the fabrication of horizontally aligned SWCNTs using both post growth (Dielectrophoresis) and direct growth (CVD) methods. Both catalyst-assisted and catalyst-free SWCNTs are synthesized by CVD. While metallic nanoparticles nucleate and grow SWCNTs, opened and activated fullerene structures are used for all carbon catalyst-free growth of single wall and double wall carbon nanotubes. The systematic studies allow for a detailed understanding of the growth mechanisms of catalyst and catalyst-free grown SWCNTs to be elucidated. The data significantly advances our understanding of horizontally aligned carbon nanotubes by both post synthesis alignment as well as directly as-synthesized routes. Indeed, the knowledge enables such tubes to be grown in high yield and with a high degree of special control. It is shown, for the first time, how one can grow horizontally aligned carbon nanotubes in crossbar configurations in a single step and with bespoke crossing angles. In addition, the transport properties of the aligned tubes at room temperature are also investigated through the fabrication of devices based on these tubes.:Introduction ……………………………………………………………….…………… 11 1 Carbon nanotubes basics ……………………………………………………. 15 1.1 sp2 hybridization …………………………………………………….……… 16 1.2 Graphene basics ………………………………………………………...… 16 1.3 Single wall carbon nanotubes Basics …………………………… 18 1.4 Synthesis of single wall carbon nanotubes ………………… 24 1.4.1 Arc discharge ………………………………………………… 24 1.4.2 Laser ablation ……………………………………………… 24 1.4.3 Chemical vapor deposition …………………………… 25 1.4.4 The as-produced carbon nanotubes …………… 25 1.5 Potential applications of single wall carbon nanotubes 26 1.6 Challenges face single wall carbon nanotubes ………… 27 2 Horizontally aligned single wall carbon nanotubes: a review of fabrication and characterization ………………………………………………… 29 2.1 Introduction …………………………………………...………………………………………… 29 2.2 The requisites of horizontally aligned single wall carbon nanotubes 31 2.3 Characterization of Horizontally aligned single wall carbon nanotubes 32 2.3.1 Electron microscopy …………………………………………………………… 32 2.3.2 Scanning probe microscopy ……………………………………...…………… 34 2.3.3 Spectroscopy ……………………………………………………………………… 35 2.4 Fabrication of horizontally aligned single wall carbon nanotubes ……… 36 2.4.1 Dielectrophoresis (Growth-then-place) …………………….…………… 36 2.4.2 Chemical vapor deposition (Growth-in-place) ………...…………… 40 2.5 Transistor performance from horizontally aligned single wall carbon nanotubes ……… 67 2.5.1 Field effect transistor ……………….…………...………………………….…… 67 2.5.2 Thin film transistor …………………………….…...…………………….……… 68 3 Dielelectrophoretic deposition of single wall carbon nanotubes 69 3.1 Deposition of single wall carbon nanotubes in between metallic electrodes ………………… 69 3.1.1 Dispersion of single wall carbon nanotubes ………………………… 69 3.1.2 Dielectrophoretic alignment of single wall carbon nanotubes 70 3.2 CNTFET topographical characterization …………..………………………..……… 70 3.3 Dielectrophoresis advantages and drawbacks ………………………….....……… 72 4 Growth of catalyst-assisted horizontally aligned single wall carbon nanotubes …..………..... 75 4.1 Experimental procedure ….………………………………………………………...……… 76 4.1.1 ST-cut quartz substrates preparation ……………………….....……… 76 4.1.2 Catalyst solutions preparation ……………………………........……… 76 4.1.3 Growth of single wall carbon nanotubes ……………………………… 77 4.1.4 Single wall carbon nanotubes transfer into silicon substrates 78 4.2 Substrate thermal treatment ………………………………………………..........……… 79 4.3 Formed catalyst nanoparticles ………………………………………………...……… 82 4.4 As-grown single wall carbon nanotubes ………………...……………..…………… 84 4.5 Transferred single wall carbon nanotubes ………………...………….……...…… 91 4.6 Chapter summary ………………………………………………...…………………………… 92 5 Growth of catalyst-free horizontally aligned single wall carbon nanotubes … 93 5.1 Experimental procedure ………………………………………………………………….… 94 5.1.1 Different fullerene-based structure ……………………...……………… 94 5.1.2 Pre-treatment of fullerene structures …………………………...…….. 95 5.1.3 Growth of catalyst-free single wall carbon nanotubes ………… 96 5.2 Different fullerene structures nucleate the growth of single wall carbon nanotubes …… 97 5.3 C60 nucleated aligned single wall carbon nanotubes .……………...………… 98 5.3.1 Orientation of the as-grown nanotubes …………………………..… 98 5.3.2 Yield of the grown nanotubes ……………………………………………… 99 5.3.3 Activated sp2 caps ……………………………………………………...……….… 103 5.3.4 Type of the grown nanotubes …………………………………...………… 106 5.3.5 Growth mechanism of carbon nanotubes nucleated from fullerene … 109 6 Electrical characterization of the aligned single wall carbon nanotubes ……… 113 6.1 Device fabrication …………………………………………………………………..…………… 114 6.1.1 FET fabrication over the dielectrophoretic deposited carbon nanotubes … 114 6.1.2 Fabrication of the CVD grown nanotubes based device …………114 6.2 Electrical characterization of dielectrophoretic deposited single wall carbon nanotubes 115 6.2.1 I-V characteristics of the dielectrophoretic deposited nanotubes 115 6.2.2 Defect detection ………………………………………………………………..…… 117 6.3 Electrical characterization of the CVD grown nanotubes ……………………… 120 6.3.1 IV-Characteristics of the metal-assisted single wall carbon nanotubes ……… 120 6.3.2 Electrical behaviour of the catalyst-free single wall carbon nanotubes …………122 7 Conclusions and outlook ……………..……………………..………………………… 125 Appendix ……..……………………………………..………………………….……………. 129 Bibliography …...…………………………………..………………………….……………. 133 List of figures ….…………………………………..………………………….……………. 143 Glossary …………..…………………………………..………………………….……………. 147 Publications ………………………………………..………………………….……………. 149 Curriculum vitae ……………………………………..………………..…………………. 153 Acknowledgment ……..…………………………………..…..…………………………. 155 Declaration …………………………………………………..…..…………………………. 157 / Die außergewöhnlichen Eigenschaften von einwandigen Kohlenstoffnanoröhren (engl. single wall carbon nanotubes, SWCNTs) haben bemerkenswerte Forschungsaktivitäten zur Verwirklichung von auf SWCNTs basierenden Anwendungen für verschiedene Bereiche, die von Nanokompositen bis hin zur Nanoelektronik reichen, stimuliert. Ihre hohe Ladungsträgermobilität und die außerordentlichen hohen Ladungsdichten, die in SWCNTs erreicht werden können sowie ihre Eigenschaft, entweder halbleitend oder metallisch zu sein, machen sie zu idealen Konstituenten von nanoelektronischen Schaltkreisen. Für Anwendungen in der Nanoelektronik sind entweder einzelne oder parallel angeordnete SWCNTs vorteilhaft. Darüber hinaus sind dicht gepackte Anordnungen von SWCNTs erforderlich, um die relativ hohen Ströme in Hochfrequenzbauelementen zu transportieren. Für eine erfolgreiche Realisierung von großskaligen nanoelektronischen Bauteilen, die auf SWCNTs basieren, sind noch zwei enorm wichtige Kernprobleme zu lösen, die weitere Forschungsanstrengungen erfordern: die reproduzierbare und verlässliche Kontrolle der räumlichen Positionierung und Orientierung der Nanoröhren sowie die Kontrolle der Chiralität der einzelnen SWCNTs. Hinsichtlich der Orientierung der Nanoröhren kann die horizontal parallele Ausrichtung von SWCNTs mit verschiedenen Techniken erreicht werden. Diese setzen entweder nach dem eigentlichen Wachstum der Röhren ein (Post-Synthese-Methoden wie z.B. Dielektrophorese oder Langmuir-Blodgett-Techniken) oder erreichen direkt während des Wachstums (z.B. durch Chemical-Vapor-Deposition-Methoden (CVD)) die parallele Anordnung. Durch die niedrigen Prozesstemperaturen, die während des Herstellungsprozesses erforderlich sind, erlauben die nach der eigentlichen Synthese stattfindenden Ausrichtungsmethoden die parallele Anordnung von Nanoröhren auf nahezu jedem Substrat, jedoch stellen die geringe Reproduzierbarkeit dieser Prozesse, die schwierige Kontrollierbarkeit der räumlichen Anordnung und die limitierte Qualität der ausgerichteten Röhren aufgrund der erforderlichen Prozessschritte natürliche Beschränkungen dieser Techniken dar. Die einfache Durchführung und ihre Skalierbarkeit, zusammen mit dem reproduzierbaren Wachstum qualitativ sehr hochwertiger SWCNTs mit hoher Kontrolle von räumlicher Anordnung, Orientierung und Länge machen die CVD-Methode zur erfolgversprechendsten Technik für die Herstellung von dichtgepackten hochparallelen horizontalen Anordnungen von SWCNTs. Diese CVD-Ansätze weisen jedoch auch einige Nachteile auf, die in den bei der Synthese verwendeten Katalysatorpartikeln (metallisch oder nicht-metallisch) begründet liegen, da das Katalysatormaterial die Röhren kontaminieren und dadurch ihre intrinsischen Eigenschaften beeinflussen kann. Daher ist eine katalysatorfreie Synthesemethode für ausgerichtete SWCNTs ein höchst erstrebenswertes Ziel. Die vorliegende Arbeit beschreibt detaillierte und systematische experimentelle Untersuchungen zur Herstellung von horizontalen, parallel ausgerichteten Anordnungen von SWCNTs unter Verwendung von Methoden, die sowohl nach dem eigentlichen Wachstum der Nanoröhren (Dielektrophorese) als auch während des Wachstums ansetzen (CVD). Bei den CVD-Methoden werden sowohl solche, die auf der Verwendung von Katalysatoren basieren, als auch katalysatorfreie Techniken verwendet. Während metallische Nanopartikel den Ausgangspunkt für das Wachstum von SWCNTs darstellen, werden geöffnete und aktivierte Fullerenstrukturen verwendet, um das katalysatorfreie Wachstum von reinen ein- oder mehrwandigen Nanoröhren zu erreichen. Die systematischen Untersuchungen ermöglichen ein tiefgehendes Verständnis der Wachstumsmechanismen von SWCNTs, die unter Verwendung von Katalysatoren oder katalysatorfrei erzeugt synthetisiert wurden. Die erzielten Ergebnisse erhöhen in einem hohen Maß das Verständnis der Herstellung von horizontal parallel angeordneten Nanoröhren, die durch Post-Synthese-Methoden oder direkt während des Wachstumsprozesses ausgerichtet wurden. Die erzielten Einsichten erlauben die Herstellung solcher Strukturen mit hoher Ausbeute und mit einem hohen Maß an räumlicher Kontrolle der Anordnung. Zum ersten Male kann ein Verfahren präsentiert werden, mit dem horizontal parallel angeordnete Nanoröhren in gekreuzten Strukturen mit wohldefinierten Kreuzungswinkeln hergestellt werden können. Zusätzlich werden die Transporteigenschaften von parallel ausgerichteten Nanoröhren bei Raumtemperatur, durch die Herstellung von auf den dargestellten Strukturen basierenden Bauelementen, untersucht.:Introduction ……………………………………………………………….…………… 11 1 Carbon nanotubes basics ……………………………………………………. 15 1.1 sp2 hybridization …………………………………………………….……… 16 1.2 Graphene basics ………………………………………………………...… 16 1.3 Single wall carbon nanotubes Basics …………………………… 18 1.4 Synthesis of single wall carbon nanotubes ………………… 24 1.4.1 Arc discharge ………………………………………………… 24 1.4.2 Laser ablation ……………………………………………… 24 1.4.3 Chemical vapor deposition …………………………… 25 1.4.4 The as-produced carbon nanotubes …………… 25 1.5 Potential applications of single wall carbon nanotubes 26 1.6 Challenges face single wall carbon nanotubes ………… 27 2 Horizontally aligned single wall carbon nanotubes: a review of fabrication and characterization ………………………………………………… 29 2.1 Introduction …………………………………………...………………………………………… 29 2.2 The requisites of horizontally aligned single wall carbon nanotubes 31 2.3 Characterization of Horizontally aligned single wall carbon nanotubes 32 2.3.1 Electron microscopy …………………………………………………………… 32 2.3.2 Scanning probe microscopy ……………………………………...…………… 34 2.3.3 Spectroscopy ……………………………………………………………………… 35 2.4 Fabrication of horizontally aligned single wall carbon nanotubes ……… 36 2.4.1 Dielectrophoresis (Growth-then-place) …………………….…………… 36 2.4.2 Chemical vapor deposition (Growth-in-place) ………...…………… 40 2.5 Transistor performance from horizontally aligned single wall carbon nanotubes ……… 67 2.5.1 Field effect transistor ……………….…………...………………………….…… 67 2.5.2 Thin film transistor …………………………….…...…………………….……… 68 3 Dielelectrophoretic deposition of single wall carbon nanotubes 69 3.1 Deposition of single wall carbon nanotubes in between metallic electrodes ………………… 69 3.1.1 Dispersion of single wall carbon nanotubes ………………………… 69 3.1.2 Dielectrophoretic alignment of single wall carbon nanotubes 70 3.2 CNTFET topographical characterization …………..………………………..……… 70 3.3 Dielectrophoresis advantages and drawbacks ………………………….....……… 72 4 Growth of catalyst-assisted horizontally aligned single wall carbon nanotubes …..………..... 75 4.1 Experimental procedure ….………………………………………………………...……… 76 4.1.1 ST-cut quartz substrates preparation ……………………….....……… 76 4.1.2 Catalyst solutions preparation ……………………………........……… 76 4.1.3 Growth of single wall carbon nanotubes ……………………………… 77 4.1.4 Single wall carbon nanotubes transfer into silicon substrates 78 4.2 Substrate thermal treatment ………………………………………………..........……… 79 4.3 Formed catalyst nanoparticles ………………………………………………...……… 82 4.4 As-grown single wall carbon nanotubes ………………...……………..…………… 84 4.5 Transferred single wall carbon nanotubes ………………...………….……...…… 91 4.6 Chapter summary ………………………………………………...…………………………… 92 5 Growth of catalyst-free horizontally aligned single wall carbon nanotubes … 93 5.1 Experimental procedure ………………………………………………………………….… 94 5.1.1 Different fullerene-based structure ……………………...……………… 94 5.1.2 Pre-treatment of fullerene structures …………………………...…….. 95 5.1.3 Growth of catalyst-free single wall carbon nanotubes ………… 96 5.2 Different fullerene structures nucleate the growth of single wall carbon nanotubes …… 97 5.3 C60 nucleated aligned single wall carbon nanotubes .……………...………… 98 5.3.1 Orientation of the as-grown nanotubes …………………………..… 98 5.3.2 Yield of the grown nanotubes ……………………………………………… 99 5.3.3 Activated sp2 caps ……………………………………………………...……….… 103 5.3.4 Type of the grown nanotubes …………………………………...………… 106 5.3.5 Growth mechanism of carbon nanotubes nucleated from fullerene … 109 6 Electrical characterization of the aligned single wall carbon nanotubes ……… 113 6.1 Device fabrication …………………………………………………………………..…………… 114 6.1.1 FET fabrication over the dielectrophoretic deposited carbon nanotubes … 114 6.1.2 Fabrication of the CVD grown nanotubes based device …………114 6.2 Electrical characterization of dielectrophoretic deposited single wall carbon nanotubes 115 6.2.1 I-V characteristics of the dielectrophoretic deposited nanotubes 115 6.2.2 Defect detection ………………………………………………………………..…… 117 6.3 Electrical characterization of the CVD grown nanotubes ……………………… 120 6.3.1 IV-Characteristics of the metal-assisted single wall carbon nanotubes ……… 120 6.3.2 Electrical behaviour of the catalyst-free single wall carbon nanotubes …………122 7 Conclusions and outlook ……………..……………………..………………………… 125 Appendix ……..……………………………………..………………………….……………. 129 Bibliography …...…………………………………..………………………….……………. 133 List of figures ….…………………………………..………………………….……………. 143 Glossary …………..…………………………………..………………………….……………. 147 Publications ………………………………………..………………………….……………. 149 Curriculum vitae ……………………………………..………………..…………………. 153 Acknowledgment ……..…………………………………..…..…………………………. 155 Declaration …………………………………………………..…..…………………………. 157
49

Fabrication of Lithium-Ion Battery with Vertically Aligned Carbon Nanotubes on Three-Dimensional Ni Foam

Mao, Jialin 05 June 2014 (has links)
No description available.
50

Signature Verification Model: A Long Term Memory Approach

Muraleedharan Nair, Jayakrishnan 25 August 2015 (has links)
No description available.

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