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Thèses sur le sujet « SWCNH »

Auteur : Grafiati
Publié le 1 avril 2023

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1

Sharma, Amrit Prasad. "Electronic characterization of swcnt/block copolymer-based nanofiber for biosensor applications." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2016. http://digitalcommons.auctr.edu/dissertations/3118.

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The aim of this research is to fabricate an electrically conducting, smooth, continuous and sensitive nanofiber using tri-block copolymer PS-b-PDMS-b-PS and SWCNTs by electrospinning. The electronic nanofibers may be utilized for effective biosensing applications. The SWCNTs have been of great interest to researchers because of their exceptional electrical, mechanical, and thermal properties. The nanoscale diameter, high aspect ratio, and low density make them an ideal reinforcing candidate for novel nanocomposite material. Electrically conducting fibers are prepared by electrospinning a solut
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Adams, Melanie Chantal. "Highly - conductive cathode for lithium-ion battery using M13 phage - SWCNT complex." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81137.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 27).<br>Lithium-ion batteries are commonly used in portable electronics, and the rapid growth of mobile technology calls for an improvement in battery capabilities. Reducing the particle size of electrode materials in synthesis is an important strategy for improving their rate capability and power density (which is the capacity at high rates). Using biological materials as a template during synthesis allows u
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Müller, Christian, Ammar Al-Hamry, Olfa Kanoun, et al. "Humidity Sensing Behavior of Endohedral Li-Doped and Undoped SWCNT/SDBS Composite Films." MDPI AG, 2019. https://monarch.qucosa.de/id/qucosa%3A33173.

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We have investigated single-walled carbon nanotube (SWCNT) networks wrapped with the cationic surfactant sodium dodecyl-benzenesulfonate (SBDS) as promising candidates for water detection. This is the first time that the humidity behavior of endohedral Li-doped (Li@) and undoped SWCNTs/SDBS has been shown. We identified a strong and almost monotonic decrease in resistance as humidity increased from 11 to 97%. Sensitivities varied between −3 and 65% in the entire humidity range. Electrical characterization, Raman spectroscopy, and high-resolution transmission electron microscopy (HRTEM) analysi
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Gupta, Ankit. "Multi-Scale Modeling of Mechanical Properties of Single Wall Carbon Nanotube (SWCNT) Networks." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/1022.

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Single wall carbon nanotubes (SWCNTs) show a variety of unparalleled properties such as high electrical and thermal conductivity, high specific surface area (SSA) and a large stiffness under axial loads. One of the major challenges in tapping the vast potential of SWCNTs is to fabricate nanotube based macrostructures that retain the unique properties of nanotubes. Pristine SWCNT aerogels are highly porous, isotropic structures of nanotubes mediated via van der Waals (VDW) interactions at junctions. The mechanical behavior of such aerogels is examined in several experimental studies. However, i
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Miller, Matthew Ryan. "Mechanical Properties of PLGA Polymer Composites Using Nonfunctionalized Carbon Nanotubes as Reinforcement." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1203.

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Poly[lactic co-glycolic] acid (PLGA) is a biocompatible polymer commonly used in the field of tissue engineering, but its mechanical properties tend to be less than ideal for most orthopedic applications. Five PLGA composites, reinforced with 0 to 1% nonfunctionalized single-walled carbon nanotubes, were prepared and tested for tensile strength. In order to achieve consistent nanotube dispersions, sodium dodecyl sulfate was incorporated as a surfactant. The polymer scaffold fabrication methods were successful at creating suitable samples for tensile testing. After the tests were performed, sca
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6

Chan, Ka Keung. "SYNTHESIS AND FUNCTIONALITY STUDY OF NOVEL BIOMIMETIC N-GLYCAN POLYMERS." Cleveland State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=csu162309270958734.

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Mada, Mykanth Reddy Materials Science &amp Engineering Faculty of Science UNSW. "Fabrication and characterisation of SWCNT-PMMA and charcoal-PMMA composites with superior electrical conductivity and surface hardness properties." Awarded by:University of New South Wales. Materials Science & Engineering, 2009. http://handle.unsw.edu.au/1959.4/41831.

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Fabrication of SWCNT-PMMA and Activated Charcoal- PMMA composites was carried out by the compression moulding technique. Then Mechanical and Electrical properties of the composites were investigated. The morphological studies of composites showed a) good dispersion of fillers and b) good interaction between fillers and matrix. Electrical conductivity of SWCNT-PMMA composites was increased by 9 orders of magnitude (at 0.8 % volume fraction of SWCNT) and that of AC-PMMA composites increased by 16 orders of magnitude (at 17 % volume fraction of AC). The percolation threshold of both composites tu
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Porto, Arthur Barra. "Oxidação controlada e funcionalização de nanotubos de carbono de parede única: uma abordagem experimental e teórica." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/4817.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-06-02T14:11:01Z No. of bitstreams: 1 arthurbarraporto.pdf: 4422124 bytes, checksum: 6ea016d6bb89f506c7e2ee4f2fdc7a24 (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-06-06T12:08:10Z (GMT) No. of bitstreams: 1 arthurbarraporto.pdf: 4422124 bytes, checksum: 6ea016d6bb89f506c7e2ee4f2fdc7a24 (MD5)<br>Made available in DSpace on 2017-06-06T12:08:10Z (GMT). No. of bitstreams: 1 arthurbarraporto.pdf: 4422124 bytes, checksum: 6ea016d6bb89f506c7e2ee4f2fdc7a24 (MD5) Previous issue date: 20
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9

Kraft, Thomas. "Ternary blend ink formulations for fabricating organic solar cells via inkjet printing." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0027.

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L’objectif final de la thèse est l'impression de la couche photo-active ternaire d'une cellule solaire organique en utilisant deux approches: l'une concerne l'apport de nanotubes de carbone (SWCNT) pour améliorer les propriétés de transport, l'autre concerne la préparation de mélanges ternaires de matériaux pour contrôler la couleur des cellules. Les encres pour la couche active incluant des SWCNT fonctionnalisés sont composées d’un donneur d'électron (polymère) (poly(3-hexylthiophène), [P3HT]) et d’un accepteur d'électron ( [6,6]-phényl C61-butyrique ester méthylique d'acide [PCBM]) et ont ét
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10

Yaya, Abu. "Interactions faibles dans les nanosystèmes carbones." Nantes, 2011. http://archive.bu.univ-nantes.fr/pollux/show.action?id=f1e38479-78b7-4d42-9bed-71420c161382.

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Avec le logiciel AIMPRO, qui fournit une modélisation quantique basée sur la théorie de fonctionnelle de densité, on étudie plusieurs exemples importants de la faiblesse des interactions intermoléculaires dans les nanomatériaux de carbone. Au niveau mécanique quantique, nos calculs donnent une compréhension fiable et améliorée du rôle et de la fonction des interactions intermoléculaires faibles, ce qui ne peut pas être prédit par des méthodes conventionnelles comme les potentiels interatomiques classiques. Premièrement, on étudie l’interaction entre le brome physisorbé sur les nanomatériaux de
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11

LUCCI, MASSIMILIANO. "Gas sensor based on single wall carbon nanotubes." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2008. http://hdl.handle.net/2108/601.

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Single-walled carbon nanotubes (SWNTs) are nowadays one of the most investigated materials and the realization of ordered SWNT structures is of fundamental importance for the improvement of many technological fields, from the non-linear optics to the realization of transistor, to the assembly of gas sensing devices. A SWNT is formed by rolling a graphene sheet into a seamless cylinder with a diameter on the nanometer scale. The individual SWNTs are joined each other and assembled into bundles by Van der Waals forces. Guest molecules can potentially interact with SWNTs via the outer surfac
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12

Schmucker, Wolfgang Josef [Verfasser], and Hans-Achim [Akademischer Betreuer] Wagenknecht. "Modulation der Wechselwirkungen und Untersuchungen zur Stabilität der DNA-SWCNT-Hybride mittels chromophor- und hydroxychinolinmodifizierter Oligonukleotide / Wolfgang Josef Schmucker. Betreuer: Hans-Achim Wagenknecht." Karlsruhe : KIT-Bibliothek, 2012. http://d-nb.info/1043779752/34.

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Mzoughi, Nada [Verfasser], Bernhard [Akademischer Betreuer] [Gutachter] Wolf, and Franz [Gutachter] Kreupl. "Inkjet-printed flexible and disposable biochips with SWCNT sensors for multiparametric microphysiological measurements / Nada Mzoughi ; Gutachter: Bernhard Wolf, Franz Kreupl ; Betreuer: Bernhard Wolf." München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1132248663/34.

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14

太田, 貴久. "ポリエチレングリコール修飾によるペプチド被覆カーボンナノチューブの分散安定化と得られた複合体のドラッグデリバリーシステムキャリアへの応用に関する研究". 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215491.

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15

Ibrahim, Imad. "Fabrication of high yield horizontally aligned single wall carbon nanotubes for molecular electronics." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-117433.

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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 sust
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16

Shahverdi, Ali. "In situ purification in large-scale production of single-walled carbon nanotubes by induction thermal plasma." Mémoire, Université de Sherbrooke, 2008. http://savoirs.usherbrooke.ca/handle/11143/1540.

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Single-walled carbon nanotubes (SWCNTs) are new forms of carbon nanostructure that have exhibited important physical and chemical properties with a wide range of future applications including microelectronic devices, nanoscale transistors, catalyst supports, biosensors, reinforcement materials, medical chemistry, etc. Up to now, many versatile methods have been used for SWNCT synthesis. These methods can produce SWCNT besides many by-products such as amorphous carbon, fullerenes, nanocrystalline graphite and multi-walled carbon nanotubes. For the exploration of the physical properties of SWNCT
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17

Oftadeh, M., M. Gholamian, and H. H. Abdallah. "Investigation of Interaction Hydrogen Sulfide with (5,0) and (5,5) Single-Wall Carbon Nanotubes by DFT Method." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35161.

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In the present study the interaction of Hydrogen Sulfide with inside and outside single-wall carbon nanotube of (5,0) and (5,5) was investigated. This study was conducted using DFT at B3LYP/6-31G* level of theory. Computational calculations were performed in the gaseous phase in Gaussian 09. The geometry of all molecules under investigation was determined by optimizing all geometrical variables without any symmetry constraints. The harmonic frequencies were computed from analytical derivatives for all species in order to define the minimum-energy structures. The adsorption energies, the t
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18

Dutta, Debosruti. "Insights into the Epitaxial Relationships between One-Dimensional Nanomaterials and Metal Catalyst Surfaces Using Density Functional Theory Calculations." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5213.

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This dissertation involves the study of epitaxial behavior of one-dimensional nanomaterials like single-walled carbon nanotubes and Indium Arsenide nanowires grown on metallic catalyst surfaces. It has been previously observed in our novel microplasma based CVD growth of SWCNTs on Ni-Fe bimetallic nanoparticles that changes in the metal catalyst composition was accompanied by variations in the average metal-metal bond lengths of the nanoparticle and that in turn, affected nanotube chirality distributions. In this dissertation, we have developed a very simplistic model of the metal catalyst in
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19

RIGONI, FEDERICA. "EXPLORING DETECTION LIMITS AND RESPONSE TIME SCALES OF CHEMIRESISTOR GAS SENSORS BASED ON CARBON NANOTUBE AND HYBRID LAYERS." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/262413.

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Crucial features in gas sensors for environmental monitoring are the gas sensitivity in the low ppb range and the ability to discriminate variations of a certain polluting gas from other interfering gases. Monitoring of ammonia gas concentrations is mandatory to reduce the hazard for human health and vegetation determined by the widespread use of ammonia derivatives as agricultural nitrogen fertilizers, industrial production and traffic. In particular, ammonia, besides being a toxic molecule is one of the main precursors of secondary fine particulate matter (PM10, PM2.5). Ammonia could hence
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20

Schmidt, Andreas. "Carbon nanostructures for femtosecond mode-locked lasers in the 1.0 to 2.1 micrometer wavelength range." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2016. http://dx.doi.org/10.18452/17552.

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Die vorliegende Dissertation behandelt das Zusammenspiel von effizienten aktiven Lasermedien und neuartigen sättigbaren Absorbern, welche auf den Kohlenstoff-Nanostrukturen Graphen und den einwandigen Kohlenstoff Nanoröhren (SWCNTs) basieren. Die aktiven Lasermedien decken den Spektralbereich von 1,0 Mikrometer bis 2,1 Mikrometer ab, d.h. eine ganze Oktave, und nutzen die laseraktiven Ionen des Ytterbiums, Chroms und Thuliums. In dieser Arbeit werden die auf Graphen und SWCNT basierenden sättigbaren Absorber hinsichtlich ihres einer Anregung folgenden Relaxationsverhaltens, ihrer von der Fluen
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21

Grimm, Daniel. "A combined experimental and theoretical approach towards the understanding of transport in one-dimensional molecular nanostructures." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1218037048209-51309.

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This thesis comprises detailed experimental and theoretical investigations of the transport properties of one-dimensional nanostructures. Most of the work is dedicated to the exploration of the fascinating effects occurring in single wall carbon nanotubes (SWCNT). These particular nanostructures gained an overwhelming interest in the past two decades due to its outstanding electronic and mechanical features. We have investigated the properties of a novel family of carbon nanostructures, named here as Y-shaped rings. The studies show that they present very interesting quantum interference effec
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22

Castan, Alice. "Growth and Characterization of Single-walled Carbon Nanotubes from Chemically Synthesized Catalyst Precursors." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS028/document.

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Les propriétés des nanotubes de carbone monoparois (SWCNTs) dépendent fortement de leur structure atomique. La croissance sélective en structure des SWCNTs est donc un objectif clé à atteindre pour les applications potentielles de ces matériaux uniques. Dans le travail présenté dans ce manuscrit, nous proposons une nouvelle méthode originale alliant chimie de coordination et chimie des surfaces, pour la croissance de SWCNTs par décomposition chimique en phase vapeur, à partir de pré­ curseurs de catalyseurs variés synthétisés par voie chimique.L 'étude approfondie de ce procédé est présenté po
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Joseph, Johnson. "Numerical Modeling and Characterization of Vertically Aligned Carbon Nanotube Arrays." UKnowledge, 2013. http://uknowledge.uky.edu/me_etds/28.

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Since their discoveries, carbon nanotubes have been widely studied, but mostly in the forms of 1D individual carbon nanotube (CNT). From practical application point of view, it is highly desirable to produce carbon nanotubes in large scales. This has resulted in a new class of carbon nanotube material, called the vertically aligned carbon nanotube arrays (VA-CNTs). To date, our ability to design and model this complex material is still limited. The classical molecular mechanics methods used to model individual CNTs are not applicable to the modeling of VA-CNT structures due to the significant
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Marques, Rita Ruivo Neves. "Development of hybrid TiO2/SWCNT photocatalysts." Master's thesis, 2009. http://hdl.handle.net/10216/66796.

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Marques, Rita Ruivo Neves. "Development of hybrid TiO2/SWCNT photocatalysts." Dissertação, 2009. http://hdl.handle.net/10216/66796.

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Tsai, Kun-Ju, and 蔡昆儒. "SWCNT/Ni-Co-Mn hydroxide nanohybrid materials as electrodes for flexible supercapacitors." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/8z5daq.

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Cho, Yu-Hsuan, and 卓育萱. "Fabrication of Metal-SWCNT-Metal Platforms for Electric Characterization by Thermal Scanning Probe Lithography." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/tf98qe.

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碩士<br>國立臺灣大學<br>化學研究所<br>106<br>The study on molecular electronic properties is based on Metal-Molecule-Metal (MMM) junctions. Common method for fabricating MMM junctions such as focused ion/electron beam-induced deposition (FIBD/FEBID) is not ideal due to metal-halo which may result in short circuit. Herein, Pt-SWCNT (single-walled carbon nanotube)-Pt platforms were fabricated by thermal scanning probe lithography (t-SPL). T-SPL uses heated probe to define the pattern. A dedicated t-SPL instrument is NanoFrazor which is thermal atomic force microscopy probe. First, two-layer polymers were spi
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"Effects of Sputtered Platinum Counter Electrode and Integrated TiO2 Electrode with SWCNT on DSSC Performance." Master's thesis, 2011. http://hdl.handle.net/2286/R.I.14369.

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abstract: Dye sensitized solar cells (DSSCs) are the third generation solar cells expected to outperform the first two generations of solar cells with their advantages of comparative higher efficiency and lower manufacturing costs. The manufacturing cost of Dye sensitized solar cells is one fifth of the conventional silicon solar cell. However, DSSCs have problems of low conversion efficiency, stability and reliability. Some effective approaches are required to improve their performance. This paper projects the work related to assessment and verification of the repeatability of the semi-automa
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Lin, Jia-Ru, and 林佳儒. "Investigation of Heat-Dissipation Efficiency and Thermal Deformation of TECs with SWCNT Coated Heat Sink." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4qpq7w.

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碩士<br>國立清華大學<br>動力機械工程學系<br>106<br>Thermoelectric cooler (TEC) is a device which converts electrical energy into heat energy. The primary principle of the TEC is the Peltier effect. Thermoelectric cooler is a sandwich structure consisting of many different materials. When a direct current is applied, thermal stress and thermal deformation are unavoidably produced in the TEC due to the temperature gradient. Moreover, due to the mismatch of thermal expansion coefficient between component materials of the TEC, the TEC may be out of work after an extended period of practice. In this thesis, two se
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Ji, Jia-Lin, and 紀佳伶. "Fabrication of Metal-Single SWCNT-Metal Junctions by ThermalScanning Probe Lithography and DNA-Assisted Dispersion." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/zj56yj.

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碩士<br>國立臺灣大學<br>化學研究所<br>107<br>The Metal–Molecule–Metal (MMM) junctions are widely utilized to measure the electrical properties of single molecules and constructed mostly by break-junction and electromigration method in literature precedents. However, the size of gap and target molecules are different, and the attachment is constructed on the basis of chemical adsorption, resulting in the instability of device. To fix these issues, single single-walled carbon nanotube (single SWCNT) replaces metal as electrode material due to its nano diameter where we envisaged to form covalent bond with mo
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SU, WEI-RONG, and 蘇威榕. "SWCNT Decorate Non-enzymatic Glucose Sensor based on Cu2O Surface Modification of ZnO Nanorods/Graphene composites." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/k8368t.

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碩士<br>國立雲林科技大學<br>電子工程系<br>106<br>The non-enzymatic glucose sensor was successfully prepared in this research which the single-wall carbon nanotubes (SWCNTs) were wrapped with Nafion to enhance the sensitivity of sensor based on the copper(I) oxide (Cu2O) surface modification of zinc oxide nanorod (ZnO NR)/Graphene composites on ITO glass. The experimental procedure of this research has four steps: First, the different sputtering time was used to deposit the ZnO seed layer, and then will be synthesis ZnO NR by hydrothermal. The morphology of ZnO NR was checked by scanning electron microscope (
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Lee, Hsin-Han, and 李欣翰. "An ab initio study on the system of molecular junction in between armchair SWCNT(single wall Carbon Nano-Tube)." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/12773424276104423644.

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Lan, Mengyu. "Developments in Extended Finite Element Methods for Extraction of Strain Energy Release Rates and Computational Nanomechanics for SWCNT Aggregates." Thesis, 2013. https://doi.org/10.7916/D8V69RSP.

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In the first part, a new analytical approach, within the extended finite element (XFEM) framework, is proposed to compute Strain Energy Release Rates (SERRs) directly from Irwin's integral. Crack tip enrichment functions in XFEM allow for evaluation of integral quantities in closed form (for some crack configurations studied) and therefore results in an accurate and efficient method. The effects of high order enrichments, mesh refinement and the integration limits of Irwin's integral are examined in benchmark numerical examples. The results indicate that high order enrichment functions have si
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Tomczyk, Mateusz Michał. "Carbon nanotubes in medical imaging." Rozprawa doktorska, 2021. https://repolis.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=71921.

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Tomczyk, Mateusz Michał. "Carbon nanotubes in medical imaging." Rozprawa doktorska, 2021. https://delibra.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=71921.

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Moore, Joshua John Edward. "Fabrication of Single-Walled Carbon Nanotube Electrodes for Ultracapacitors." Thesis, 2011. http://hdl.handle.net/10012/6173.

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Well dispersed aqueous suspensions containing single-walled carbon nanotubes (SWCNTs) from bulk powders were prepared with surfactant and without surfactant by acid functionalization. SWCNT coated electrodes were then prepared from the SWCNT aqueous suspensions using various methods to create uniform nanoporous networks of SWCNTs on various substrates and stainless steel (SST) current collectors for use as ultracapacitor electrodes. Drop coating, high voltage electro-spraying (HVES), inkjet printing, and electrophoretic deposition (EPD) methods were evaluated. Optical and scanning electron mic
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Ibrahim, Imad. "Fabrication of high yield horizontally aligned single wall carbon nanotubes for molecular electronics." Doctoral thesis, 2008. https://tud.qucosa.de/id/qucosa%3A27021.

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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 sust
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Yu, Mingru, and 余明儒. "PartI. Effect Of ‘Pt’ Loading In ZnO–CuO Hetero-Junction Material Sensing Carbon Monoxide At Room Temperature PartII. Preparation Of Organic-Inorganic (SWCNT/TWEEN-TEOS) Nano Hybrids And Their NO Gas Sensing Properties." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/99834240864807052911.

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博士<br>靜宜大學<br>應用化學系<br>100<br>ABSTRACT(PartI) A study sensing carbon monoxide (CO) was performed with ZnO-CuO and Pt/ZnO-CuO. These materials were characterized by temperature-programmed reduction (TPR), high-resolution transmission electron microscopy (HR-TEM) and X-ray diffraction (XRD). Composite materials of ZnO-CuO were found to have an active sensing center, the sensor response was obtained for optimized ratio of ZnO and CuO (1:1 weight ratio) yielded highest response of 1.28 (Rco/Rair) for 1000 ppm of CO at room temperature; the response and recovery times were found to be 41 and 86 s,
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Jalan, Salil Kanj. "Mechanical Characterization of Carbon Nanotubes and Nanocomposites." Thesis, 2015. http://etd.iisc.ernet.in/2005/3968.

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Measurement of all the mechanical properties of carbon nanotubes is extremely difficult because of its small size. In the present work, all the five transverse isotropic properties of single wall carbon nanotubes (SWCNTs) and double wall carbon nanotubes are estimated through molecular structural mechanics for different chirality, length and assumed thickness. Armchair, zigzag & chiral SWCNTs and polychiral DWCNTs are considered for the analysis. Longitudinal and lateral Young’s modulus; longitudinal and lateral Poisson’s ratio and shear modulus are estimated for 1080 SWCNTs and 1170 polychira
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Singh, Laishram Tomba. "Synthesis Of Various Carbon Nanostructures And The Transport Properties Of Carbon Nanotubes." Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/1940.

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Different carbon nanostructures have different properties and different applications. It is needed to synthesize good quality and also on large scale. From the point of industrial applications, highly productive and low cost synthesis method is very essential. Research has been done extensively on the intrinsic and individual properties of both single walled carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWC-NTs) in the range of nanometer to micrometer length scale. The important question is how the properties change beyond this length scale and if they are used in group in the f
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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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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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