Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 495 for “"Carbon Nanotube"”.
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Carbon Nanotube Devices
Eine Reihe wichtiger Wachstums- und Integrationsaspekte von Kohlenstoff-Nanoröhren wurde im Rahmen dieser Arbeit untersucht. Der Schwerpunkt der experimentellen Arbeit lag dabei hauptsächlich bei einschaligen Kohlenstoffnanoröhren (SWCNT). Das große Potential dieser Nanoröhren für …
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Carbon Nanotube Alignment within Macrostructures
The enhancement of alignment in carbon nanotube (CNT) assemblies is an important challenge in scaling up their exceptional properties from the nano- to the macroscopic level. In this work, theoretical and computational studies were performed to understand how CNT alignment is measured, how it …
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Carbon nanotube based electromechanical probes
… promising mechanical and electrical properties, carbon nanotubes (CNTs) are strong candidates for future probing applications. A new class of metal-CNT hybrid electromechanical probes is presented where vertically aligned carbon nanotube structures, grown with a chemical vapor deposition (CVD) …
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Carbon nanotube-based chemical sensing
In this thesis, we introduce approaches to carbon nanotube-based sensing for applications in environmental monitoring, disease diagnostics, and food analysis: In Chapter 1, we introduce carbon nanotube-based sensing. We describe parameters that give rise to the sensing capabilities of CNT-based …
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Increasing carbon nanotube forest density
… and morphological properties of individual carbon nanotubes (CNTs) open up exciting potential applications in a wide range of fields. One such application is replacing the standard activated carbon electrode in electrochemical double layer (EDLC) ultracapacitors with vertically aligned CNT …
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Carbon nanotube films for flexible electronics
… inorganic semiconductors. Recently, films of carbon nanotubes have been proposed as electronic materials with superior electrical performance due to exceptional electrical and mechanical properties of single-walled carbon nanotubes (SWCNTs). In this thesis, some aspects of recent research …
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Thermoelectric properties of carbon nanotube films
… of the thermoelectric properties of carbon nanotube (CNT) films and the fabrication process of carbon nanotube-based thermoelectric devices. The Seebeck coefficient is a intrinsic property of a thermoelectric material that correlates the voltage produced by a conductor and the …
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Carbon nanotube interconnects for IC chips
Carbon nanotubes (CNTs) have been investigated as candidate materials to replace or augment the existing copper-based technologies as interconnects for Integrated Circuit (IC) chips. Being ballistic conductors, CNTs are capable of carrying higher current densities of up to 10¹⁰A/cm² and high …
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Carbon nanotube-based field ionization vacuum
… that uses arrays of isolated vertical carbon nanotubes (CNT) to field ionize gas particles. The ionized gas molecules are accelerated to and implanted into a negatively biased getter removing the gas molecules from the volume being pumped. CNTs are ideal for field ionization because of …
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Towards a carbon nanotube antibody sensor
This work investigated single-walled carbon nanotube (SWNT)/polymer-protein A complexes for optically reporting antibody concentration via a change in near infrared fluorescent emission after antibody binding. SWNT have potential as biosensors because of extraordinary sensitivity, lack of …
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Stiffness matrices of carbon nanotube structures
… of graphene, the planar building block of carbon nanotubes. Through continuum linear elastic analysis and a displacement-based finite element method, the global in-plane stiffness matrix for an arbitrary carbon atom of the lattice was found. The matrix provides the atomic level forces …
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Carbon nanotube electrodes for capacitive deionization
… voltage is applied across high surface area carbon, adsorbing salt ions and removing them from the water stream. CDI has the potential to be more efficient than existing desalination technologies for brackish water, and more portable due to its low power requirements. In order to optimize …
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Characterization of Aligned Carbon Nanotube/Polymer Composites
The main objective of this thesis is to efficiently disperse and align SWNTs in two different polymer matrices to obtain an orthotropic composite whose strength, stiffness and electrical properties depend on the orientation of the SWNTs. The SWNTs are successfully dispersed and aligned in a …
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Carbon Nanotube Behavior in Represntative Old Leachate
… was to evaluate the behavior of single walled carbon nanotubes (SWNT) in mature landfill leachate. To achieve this goal, the electrokinetic properties and relative stability of the carbon nanotubes were measured in representative mature landfill leachate. Additionally the mobility of …
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Carbon nanotube thermal interfaces and related applications
… comprehensive investigation of the viability of carbon nanotube based thermal interface materials (CNT TIMs) to efficiently conduct heat across two contacting materials. The efforts in this work were initially devoted to engaging CNT TIMs with an opposing substrate using two bonding techniques. …
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Multifunctional Composites Using Carbon Nanotube Fiber Materials
… composite (NRLC) consisting of Multiwalled Carbon Nanotube (MWCNT) arrays that are interspersed between the plies of a fiber reinforced polymeric composite was developed. The MWCNT array and the polymer matrix are arranged within the laminated composite so that the new interfaces yield …
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Hydrogen storage in pt/carbon nanotube sheets
Three types of self-assembled carbon nanotube (CNT) sheets, for example, carboxylic functionalized multi-walled CNTs (MWNTs-COOH), pure multi-walled CNTs (MWNTs), and pure single-walled CNTs (SWNTs), were prepared as substrates by ambient environment vacuum filtration of suspensions of the …
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Characterisation and development of carbon nanotube macrostructures
An investigation into the properties of CNT fibres as they relate to their microstructures has been carried out. Firstly, an overview of the current literature about CNTs and CNT materials has been set out. The properties of individual CNTs have been reviewed, and then expanded to CNT bundles and …
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Low-dimensional carbon nanotube and graphene devices
… in computing technology. Recently discovered carbon nanotubes (1991) and graphene (2004) are intrinsically low-dimensional materials with remarkable electronic properties. Combined with semiconductor technologies they might be used to fabricate smaller devices with more complex functionality. …
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