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 47 for “"Nanoribbon"”.
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Atomically precise single Graphene Nanoribbon transistor
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Biological and biomimetic mineralization via protein nanoribbon scaffolds
… crystals, co-aligned amyloid-like amelogenin nanoribbons (Amel NR) are hypothesized to provide the scaffold for amorphous calcium phosphate (ACP) precursor to apatite. From quantitative analysis of ACP nucleation rates on Amel NRs as a function of chemical potential, we see phosphorylated Amel …
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INVESTIGATION OF ELECTRIC AND THERMOELECTRIC PROPERTIES OF GRAPHENE NANORIBBON
In this thesis, we developed a method to fabricate ultra-narrow GNRs which is called helium ion Lithography (HIL) using helium ion microscope (HIM). Suspended GNRs with widths down to 5nm and supported GNRs with widths down to 20nm are patterned by directly modifying graphene strips through surface …
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Uniaxial Strain Effect on Graphene-Nanoribbon Resonant Tunneling Transistors
… effect of the uniaxial strain on the graphene nanoribbon resonant tunneling transistors (RTTs). The uniaxial strain may be induced either by an external stress applied to the graphene in a particular direction or by a substrate due to deposition of graphene on top of the other materials. The …
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Nanosoldering carbon nanotube fibers and graphene nanoribbon thin film transistors
… We work with carbon nanotubes and graphene nanoribbons. The first part involves using carbon nanotubes (CNTs) to build composite structures such as fibers. In the past, our group developed the “nanosoldering” technique to solder carbon nanotube junctions which significantly improved the …
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Development of spintronics devices and Type 1 heterojunctions from graphene nanoribbon superlattices
… investigation of the edge effects of graphene nanoribbon superlattices is implemented in order to guide the discovery, design, and development of novel electronic devices. Graphene nanoribbon superlattices are low-dimensional carbon materials that are formed on making junctions with different …
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Device and circuit-level models for carbon nanotube and graphene nanoribbon transistors
… field-effect transistors (CNTFETs) and graphene nanoribbon field-effect transistors (GNRFETs) for future nanoelectronics. The investigation explores the potential of these amazing carbon structures that exceed MOSFET capabilities in term of speed, scalability and power consumption. The research …
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Interlayer Defect Effects on the Phonon Properties of Bilayer Graphene and its Nanoribbon
… been discussed for bilayer armchair graphene nanoribbons (BiAGNRs). The impact of defects on the phonon conduction properties has also been studied for BiAGNRs. My investigated results can be convenient to study the thermal conductivity and electron-phonon interaction of bilayer graphene-based …
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Analysis of transport properties in a zaz graphene nanoribbon junction using various dopants
A 12 atom wide ZAZ Graphene Junction was simulated and its transport properties were analyzed. I-V curves, calculated by nonequilibrium Greens function method combined with the density functional theory under external bias, showed varying semiconducting characteristics. Further, the width of the …
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Photonic Properties of Self -Assembled Organic Materials: Supramolecular Films, and Nanoribbon -Templated Gels and Polymers
… materials templated with dendron rodcoil (DRC) nanoribbons. A rodcoil molecule contains covalently connected rod-like and coil-like segments. The aggregation of rodcoils forms supramolecular polar layered structures with infinitymm symmetry. Nonlinear optical properties of these materials are …
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The electronic characterization of a type 9A graphene nanoribbon using scanning tunneling microscopy and spectroscopy
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Physical Modeling of Graphene Nanoribbon Field Effect Transistor Using Non-Equilibrium Green Function Approach for Integrated Circuit Design
… to the technology exploration of graphene nanoribbon field effect transistors (GNRFETs) for the future. A comprehensive study of static metrics and switching attributes of GNRFET has been presented including the performance dependence of device characteristics to the GNR width and the …
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Tip-based nanolithography and application to molybdenum disulfide devices
… a heated tip, (ii) fabricating monolayer MoS2 nanoribbon transistors as narrow as 30 nm using TBN, (iii) improving the mobility of hBN encapsulated monolayer MoS2 transistors by cleaning and smoothing the interfaces with contact mode atomic force microscopy, (iv) demonstrating single-molecule …
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Quantum transport in graphene nanotransistors
… Narrow strips of graphene, called graphene nanoribbons, also display exotic behavior. A nanoribbon’s edge geometry determines its electronic transport properties, and the rich behavior of conductance of nanoribbons in response to external potentials makes them ideal for use within …
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Model and analysis of MoS2 nanopore biomolecule detection via membrane current
… of a single biomolecule in a nanopore of a MoS2 nanoribbon is presented. The analysis emphasizes the effects of the electrolyte concentration, pore size, and nanoribbon geometry on the electrical sensitivity of the nanopore in detecting biomolecules. The study also provides explanation of the …
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Scanning tunneling microscopy investigation of atomically precise graphene nanoribbons
… contact transfer of atomically precise graphene nanoribbons onto H:Si(100) under ultra-high vacuum, detailed electronic characterization, and electron-mediated polymerization of graphene nanoribbon precursors into polyanthrylene. Detailed scanning tunneling microscopy (STM) and scanning tunneling …
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Graphene under strain. A combined continuum-atomistic approach
… of a stretching field induced on a graphene nanoribbon by bending, providing that such an in-plane strain field can be decomposed in a first contribution due to the actual bending of the sheet and a second one due to the edge effects induced by the finite size of the …
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Next-Generation Flash Memories Using Two-Dimensional Materials
… two-dimensional materials. Multi-Layer Graphene Nanoribbon (MLGNR) and Graphene are used as the channel and floating gate of the device proposed. The current in the channel is calculated using the Poisson-Schrodinger equation; the numerical algorithm is based on the Newton-Raphson (NR) method. A …
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Transport properties of quantum dot molecules and electronic structure of graphene quantum dot qubits
… figure of merit are also illustrated. Graphene nanoribbon quantum dot qubits have been proposed as promising candidates for quantum computing applications to overcome the spin-decoherence problems associated with GaAs quantum dot qubits. We perform theoretical studies of the electronic …
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