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Showing 1 to 20 of 32 for “"Carbon Nanotubes (CNT)"”.
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Synthesis and Characterization of Aluminum-Carbon Nanotube Composite by Cryogenic Milling
… the ex situ strengthening of aluminum (Al) with carbon nanotubes (CNT). Characterization of mechanically alloyed Al-CNT powders was conducted in preparation for bulk powder processing to be used in cold spray. Al-CNT metal matrix composite powders with 5 wt.% and 10 wt.% CNT were synthesized by …
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Windshield Defrost and Deice Using Carbon Nanotube Composite
<p>Carbon nanotubes (CNT) are well known for their high thermal and electrical conductivities and can offer a great advantage by converting the applied electrical energy into instant heat with minimum energy loss. The goal of this research is to develop a very thin CNT layer sandwiched between two …
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Characterizing carbon-nanotube devices for an integrated sensor system
While carbon nanotubes (CNT) offer promise for future nano-electronic applications, reliably controlling CNT growth has been a big challenge. As-grown devices can have a number of different nanotubes, which can be either metallic or semiconducting and also vary in diameter. These factors affect the …
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Study of Si(Al)CN functionalized carbon nanotube composite as a high temperature thermal absorber coating material
Carbon nanotubes (CNT) and polymer-derived ceramics (PDC) have gained considerable research attention due to their unique structure and physical properties. Carbon nanotubes are known for their exceptional mechanical (Young’s modulus= 1 TPa) and thermal properties (thermal conductivity = 4000 …
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Individual Carbon Nanotube Probes And Field Emitters Fabrication And T
Since the discovery of carbon nanotubes (CNT) in 1999, they have attracted much attention due to their unique mechanical and electrical properties and potential applications. Yet their nanosize makes the study of individual CNTs easier said than done. In our laboratory, carbon fibers with nanotube …
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Hypervelocity Impact Analysis of Hybrid Nanocomposite Sensors for Inflatable Space Structures
… and testing of hybrid nanocomposites with carbon nanotubes (CNT) and coarse graphene nanoplatelets (GNP) as fillers and flexible epoxy matrix, that are proposed to be used for sensing the impact damage by MMOD in space inflatable structures. CNT and GNP were chosen as fillers owing to their …
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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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Advanced Manufacturing of Functional Lightweight Conductive Composite Systems for Sustainable and Flexible Electronics
… nanoscale conductive fillers such as graphene, carbon nanotubes (CNT), and MXene, these nanocomposites achieve the necessary electrical conductivity for EMI shielding. Polymer foams and aerogels, categorized as lightweight CPCs, are widely utilized in applications including thermal insulation, …
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Novel Bio-inspired Aquatic Flow Sensors
… in this work are flow sensors fabricated using carbon nanomaterials. These sensors are made by embedding carbon nanotubes (CNT) and carbon nanohorns (CNH) into a polymeric substrate and then tested by flowing a conductive aqueous solution over the surface of the exposed CNT and CNH. In response, …
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CARBON NANOTUBE THIN FILM AS AN ELECTRONIC MATERIAL
Carbon nanotubes (CNT) are potential candidates for next-generation nanoelectronics devices. An individual CNT possesses excellent electrical properties, but it has been extremely challenging to integrate them on a large-scale. Alternatively, CNT thin films have shown great potential as electronic …
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The effect of helical carbon nanotubes on macrophage function
… and environmental pulmonary exposure to carbon nanotubes (CNT) is considered to be a health risk with a very low threshold of tolerance as determined by the Center for Disease Control. Cell lines exposed to CNTs show a diverse range of adverse effects including reduced viability, impaired …
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Dielectrophoretic formation of nanowires and devices
… and potential drop within the double layer. Carbon nanotubes (CNT) were also deposited between the electrodes leading to the formation of field-effect transistors (FETs). We produced CNTFETs having extremely high on/off ratio, in a single step without the requirement of any intermediate …
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Nanostructured composite materials based on carbon nanotubes and 3-D photonic crystals
Carbon nanotubes (CNT) and in particular, single-wall carbon nanotubes (SWCNT) have been extensively studied, in large part, due to their unique one-dimensional crystalline structures and related electronic and optical properties. Various polymeric composite materials, which were based on carbon …
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Fabrication and inorganic Modification of 3D Carbon Nanotube Structures for Applications in Energy Storage
… electrodes are fabricated by creating 3D carbon-inorganic hybrid architectures. In this process, patterned vertically aligned carbon nanotubes (CNT) were used as the structural scaffolds to shape the electrodes while inheriting the excellent thermal and electrical properties of CNTs. …
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Fast reverse osmosis through nanotube-based membranes: molecular dynamics study
… water flux through boron nitride (BNNT) and carbon nanotubes (CNT) compared to a polymethyl methacrylate (PMMA) pore, and a slightly higher water flux through BNNT as compared to CNT. The calculated permeation coefficient is in reasonable agreement with the theoretical single-file ""hopping"" …
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Selbstorganisation von Kohlenstoffnanoröhren zu Feldeffekttransistoren
Kohlenstoffnanoröhren (engl. carbon nanotubes, CNT) verfügen über eine Vielzahl von herausragenden und möglicherweise nutzbringenden Eigenschaften. Die kontrollierte Integration von CNT in technische Systeme stellt noch immer eine große Herausforderung dar. Im Rahmen der vorliegenden Arbeit wurden …
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Manufacturing strategy for high current cold field emission cathodes: Floating catalyst chemical vapour deposition grown carbon nanotube fibres and films enhanced by laser patterning and laser purification process
… accelerator electron beam) applications using carbon nanotubes (CNT) as base material. With a particular focus on the relationship of the laser time pulse duration used for cutting CNTs and how this affects the field emission performance. Material selection for this work was narrowed to CNT as …
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Synthesis, characterization and modification of carbon nanomaterials
… the mechanisms involved in catalytic growth of carbon nanotubes (CNT) and related processes, such as the catalytic hydrogenation, and to use this knowledge to optimize the experimental approaches in order to gain better control in the synthesis and modification of carbon nanomaterials. …
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Ruthenium and Cobalt Catalysts for Hydrogen Production from Ammonia
… energy transition, green ammonia can serve as a carbon-free energy vector and is suited to store renewable energy long-term in its chemical bonds. Ammonia can then be partially cracked for direct use as a fuel or fully cracked for use in a hydrogen fuel cell. In both cases, catalytic ammonia …
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Organic/carbon nanotubes hybrid thin films for chemical detection.
… attributed to their unique chemical structure. Carbon nanotubes (CNT), on the other hand, are known to enhance the properties of nano-composites in the conjugated molecules, due to their one dimensional electronic skeleton, high surface area and high aspect ratio. In this thesis, work has been …
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