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 28 for “"multi-walled carbon nanotubes (MWCNTs)"”.
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Effects of Multi-walled Carbon Nanotubes (MWCNTs) and Integrated MWCNTs/SiO2 Additives on Polymeric PVDF Membrane for Membrane Distillation
Multi-walled carbon nanotubes (MWCNTs) and integrated MWCNTs/ SiO2 nanoparticles (NPs) were loaded as additives into nanocomposite polyvinylidene fluoride (PVDF) membranes fabricated via phase inversion methods, and the effects of these additives on the structure and vacuum membrane distillation …
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Control of carbon nanotube stiffness via tunable fabrication process parameters that determine CNT geometry
… that may be used to control the geometry of multi-walled carbon nanotubes (MWCNTs). The results may be used to grow MWCNTs with desired stiffness properties. This is important to devices that rely on the compliance of MWCNTs in order to achieve specific performance requirements, e.g. …
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Scalable Electrochemical Surface Enhanced Raman Spectroscopy (EC-SERS) for bio-chemical analysis
… type of conducting nanopillar arrays composed of multi-walled carbon nanotubes (MWCNTs) doped polymeric nanocomposites, which are manufactured over the wafer-scale on both rigid and flexible substrates by direct nanoimprinting of perfluoropolyether nanowell-array templates into uncured …
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New generation fiber reinforced polymer composites incorporating carbon nanotubes
… with steel reinforcement. On the other hand, carbon nanotubes (CNTs) have been introduced in the last decade as a material with minimal defect that is capable of increasing the mechanical properties of polymer matrices. This dissertation reports experimental investigations on the use of …
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THE MOBILITY OF ENGINEERED MULTI-WALLED CARBON NANOTUBES IN POROUS MEDIA
… in porous media is very important. Engineered multi-walled carbon nanotubes (MWCNTs) are an important class of nanomaterials from an environmental perspective as they have application in water purification and also have an associated environmental risk. This study is conducted to explore the …
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Experimental investigations of solid-solid thermal interface conductance
… thermal interface conductance between metal and multi-walled carbon nanotubes (MWCNTs), a reasonable assumption may be that the conductance with the side walls of the MWCNTs is similar to the conductance with the ends of the MWCNTs. The second study considered aluminum on diamond interfaces where …
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Piezoresistivity Characterization of Polymer Bonded Energetic Nanocomposites under Cyclic Load Cases for Structural Health Monitoring Applications
… damage sensing abilities of randomly oriented multi-walled carbon nanotubes (MWCNTs) dispersed in the polymer binder of energetic composites were experimentally investigated. Ammonium perchlorate (AP) crystals served as the inert energetic and atomized aluminum as the metallic fuel, both of …
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Degradation of Emerging Contaminants by Advanced Oxidation Using Multi-Walled Carbon Nanotubes and Continuous Ozone Injection
… study explored an AOP that utilizes ozonated multi-walled carbon nanotubes (MWCNTs) to generate •OH; past research has proven the success of this method of water treatment, showing a significant decrease in the effluent concentration of the tested compounds. However, these previous studies …
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Spray coated bentonite/MWCNT composite enzymatic biosensor for uric acid detection
… based on a nanocomposite of bentonite (BT) and multi-walled carbon nanotubes (MWCNTs) fabricated via spray coating. The composite utilizes the high conductivity and surface area of MWCNTs along with the ion-exchange capacity and antifouling properties of BT to improve both electron transfer and …
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Frequency and time domain analysis of carbon nanotubes with realistic shape and distribution
Carbon nanotube (CNT) composites have been of significant research interest in a wide range of applications. For electromagnetic applications, simplifying assumptions regarding the distribution and shapes of the CNTs are typically made because the exact three-dimensional CNT distribution in the …
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Prediction of the Degradation of Emerging Contaminants During Oxidative Treatment via Analysis of Reaction Rate Constants
… the ability of an AOP involving ozone and multi-walled carbon nanotubes (MWCNTs) in removing three specific emerging contaminants: caffeine, atrazine, and phenytoin, which were selected based on their persistence and ubiquity in the environment and their potential to serve as AOP efficacy …
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Synthesis and chemical modification of carbon nanostructures for materials applications
… response, and materials properties of various carbon nanostructures, including single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), graphite, and graphene nanoribbons (GNRs). Efficient production and modification of these unique structures, each with their own …
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Use of Rheology to Assess Structures in Polymer Nanocomposites
… Nanofillers such as undoped and nitrogen-doped multi-walled carbon nanotubes (MWCNTs) and organically modified clays as well as more recently developed nanofillers such as graphene nanoribbons (GNRs) were employed for this purpose. In this context, the effect of polymer matrix molecular features …
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Dry-transfer of chemical vapour deposited nanocarbon thin films
… of chemical vapour deposited (CVD) graphene and multi-walled carbon nanotubes (MWCNTs) as enabling technologies for flexible transparent conductors offering enhanced functionality. The technologies developed could be employed as thin film field emission sources, optical sensors and substrate-free …
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Antibacterial nanoparticle - decorated carbon nanotube - reinforced calcium phosphate composites as bone implants
… and does not possess any antibacterial property. Multi walled carbon nanotubes (MWCNTs), as one of the strongest and stiffest materials, have the potential to strengthen and toughen HA, thus expanding the range of clinical uses for the material. Furthermore, Silver nanoparticles (Ag NPs) can be …
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Tailoring Intermolecular Interactions for High-Performance Nanocomposites
Acid oxidation of multi-walled carbon nanotubes (MWCNTs) introduced carboxylic acid sites onto the MWCNT surface, which permitted further functionalization. Derivatization of carboxylic acid sites yielded amide-amine and amide-urea functionalized MWCNTs from oxidized precursors. Conventional MWCNT …
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Feasibility Study of Multi-application, Multi-Walled Carbon Nanotube for Magnetic Resonance Temperatrue Imaging Guided Laser Induced Thermal Therapy
In this work multi-application, multi-walled carbon nanotubes (MWCNTs) as super MR contrast agents and Near-Infared Radiation (NIR) laser absorbers are combined with Proton Resonance Frequency (PRF) based Magnetic Resonance Temperature Imaging (MRTI) to improve the safety and efficacy of Laser …
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Entropy, Energy and Dynamics of Coalescing Spherical and 1D Aerosols
… collision and “coalescing” processes whereby carbon nanotubes (CNTs) are colliding due to Brownian motion and bundling as a result of van der Waals (vdW) forces. The investigation of the CNT concentration required for aerogel formation during CNT synthesis is critical to tailoring the final …
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Synthesis and Properties of Ion-Containing Block and Segmented Copolymers and Their Composites
… incorporated with ammonium-functionalized multi-walled carbon nanotubes (MWCNTs) generated novel polyurethane nanocomposites with significantly enhanced mechanical performance. Modification of MWCNTs followed a dendritic strategy, which doubled the functionality by incorporating two …
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Gas chromatography on self assembled single walled carbon nanotubes
Carbon nanotubes (CNTs) are nano-sized carbon-based sorbents, which have high surface area, large aspect ratio, can be self-assembled and are known to be stable at high temperatures. It is therefore conceivable that separation techniques, such as, gas chromatography (GC) can benefit from their …
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