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 12 of 12 for “"multi-wall carbon nanotubes"”.
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Electrochemical investigation of platinum nanoparticles supported on carbon nanotubes as cathode electrocatalysts for direct methanol fuel cell
… particles of the Pt metal were well dispersed on carbon nanotubes when EG was used and in isopropanol poor dispersion was observed and no further investigation was done on them. The platinum wt% on the supports observed from EDS was 21.8, 19.10 and 16.74wt% for Pt/EMWCNT, Pt/LPGCNT and Pt/ …
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Local and Effective Mechanical Properties of Polymer Nanocomposites
… shear strength (IFSS) of individual vapor grown carbon nanofibers (VGCNFs) embedded in an aerospace grade epoxy. The IFSS from several experiments with as-grown and non-functionalized VGCNFs was 111+/-32 MPa. This value is up to 24% higher than that of the IFSS of multi-wall carbon nanotubes in …
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Comparison of Cation-Anion Oxidizer Pairings in Electrically Controllable Solid Propellants
… compositions were created with the addition of multi-wall carbon nanotubes to enhance ohmic heating capabilities. These additives were selected based on theory that with a non-complexing polymer, an oxidizer melt layer is required for ions to dissociate and electrically controlled ignition to …
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Potential Approaches to Limiting Group A Streptococcus Virulence
… bacterial killing. In this study, we found that multi-wall carbon nanotubes (MWNTs) when exposed to infrared light were capable of generating sufficient heat to kill GAS in planktonic culture and within a biofilm. Furthermore, antibody labeled nanotubes had enhanced killing of GAS in planktonic …
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SYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE BASED NANOSTRUCTURES AND COMPOSITES FOR ENERGY RELATED APPLICATIONS
… dioxide, plastic sheets, copper grid, and carbon nanotube buckypaper). The as-prepared ZnO NWs were found to be photoactive under ultra violet (UV) illumination. UV photosensor devices fabricated using these NW assemblies demonstrated a high photodetection abilities at room temperature …
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Carbon Hybrid Materials for Electromagnetic Interference (EMI) Shielding and Charge Storage Applications
… of electronic circuits. In this thesis, we used carbon hybrid nanomaterials to prepare polymer nanocomposites for EMI shielding and charge storage applications. For EMI shielding part, we synthesized multi-wall carbon nanotubes by iron catalyst embedded in alumina substrate at five different …
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Multifunctional Materials for Energy Harvesting and Sensing
… investigates the fundamental behavior of multifunctional materials for energy conversion. Multifunctional materials exhibit two or more functional properties, such as electrical, thermal, magnetic etc. In this dissertation, the emphasis is on understanding the principles for energy …
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Carbon Nanotube Mechanics: Continuum Model Development from Molecular Mechanics Virtual Experiments
Carbon Nanotubes (CNTs) hold great promise as an important engineering material for future applications. To fully exploit CNTs to their full potential, it is important to characterize their material response and ascertain their material properties. We have used molecular mechanics (MM) simulations …
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Development of pyrolysis models of composite materials for fire safety engineering
… PE, pure and reinforced with different types of carbon fillers (single/multi wall carbon nanotubes, carbon fibres, carbon black and single/few layers of graphene nanosheets), at different loadings (0.1, 0.5 and 1 wt%) and atmospheres were investigated, to determine their suitability as potential …
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Self-Healing of Thermoplastic Poly(Ethylene-co-Methacrylic Acid) Copolymers Following Projectile Puncture
… interesting composite materials consisting of carbon nanotube filled ionomers were fabricated by a melt-mixing process which produced potentially self-healing composites with superior mechanical properties. By comparing peel testing, projectile testing, the quantitative healed strength, and …
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Optical emission spectroscopy of laser induced plasmas containing carbon and transitional metals
The spectroscopic, SEM and Raman measurements on carbon nanotubes under the exact conditions of which OES analysis were made showed that at a pressure of 400 Torr and a flow rate of 200 sccm, the quality and quantity of single-walled carbon nanotubes was the highest.
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Ανάλυση της απόκρισης σύνθετων πολυμερών υλικών υπό συνθήκες φωτιάς. Εφαρμογή σε αεροπορικές κατασκευές
… work comes from the fact that it incorporates a multistage approach in order to investigate the behaviour and response of composite aircraft structures in the possibility of a fire event. The current approach goes down on material level in order to investigate and model the deterioration …