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 348 for “"2-dimensional"”.
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Quantum-confined excitons in 2-dimensional materials
The 2-dimensional semiconductor family of materials called transition metal dichalcogenides (2d-TMDs) offers many technological advantages: low power consumption, atomically-precise interfaces, lack of nuclear spins and ease of functional integration with other 2d materials are just a few. In this …
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Interactions between 0-Dimensional and 2-Dimensional Materials
… describes two types of interactions between zero-dimensional and two-dimensional materials: energy transfer and surface diffusion. The first chapter introduces zero-dimensional and two-dimensional materials and their unique properties. Based on emerging properties different from bulk materials', …
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On the mechanics of 2-dimensional carbon allotropes
… the progress leading to the modem picture of 2-dimensional carbon materials, while providing new contributions into the mechanics and failure of the graph-yne family of materials. A first original contribution involves a discussion of material failure across the graphyne family and discussion of …
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2-dimensional temperature modeling in Lower Granite Reservoir (Washington),
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2000.
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Distributed control reconfiguration algorithms for 2-dimensional mesh architectures
Reconfiguration algorithms for 2-dimensional-mesh architectures are presented based upon different interconnect schemes and various numbers of spare cells, arranged in spare rows and/or spare columns. Advantages of these algorithms over existing algorithms is discussed.
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Symmetry Identified in 2-Dimensional Artwork Compositions Using Visuospatial Ability
… element to direct the communication of a 3-dimensional spatial representation of an aesthetic experience via a 2-dimensional venue. A novel 5-step measurement procedure identifies the mathematical construct using a geometric grid overlay on the student artworks. In 159 student artworks (out …
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Terahertz Spectroscopy of Topological Insulators and other 2-Dimensional Materials
One of the major challenges for the semiconductor industry is to continue with the miniaturization of the device features, increasing the integration densities with higher operation frequency. Silicon the material of choice so far, has been arriving at its physical limits which has led the …
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A 2 1/2 dimensional thermohaline circulation model with boundary mixing
A simple quasi-two dimensional dynamical model of Thermohaline circulation (THC) is developed, assuming that the mixing only occurs near western and eastern boundary layers. When the surface density is prescribed, the climatically important quantities, such as the strength of overturning and …
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Study of a 2 dimensional aggregation model with non-linear adaptations
… to the animals’ turning rate in a 2-dimensional model of aggregation. The model in question was proposed by Fetecau and implements a dependence on an individual’s relation to neighbours’ position and the direction in which they are moving. By utilizing a turning rate formula similar …
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A 2 1/2 dimensional thermohaline circulation model with boundary mixing
A simple quasi-two dimensional dynamical model of Thermohaline circulation (THC) is developed, assuming that the mixing only occurs near western and eastern boundary layers. When the surface density is prescribed, the climatically important quantities, such as the strength of overturning and …
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The Effect of the 2-Dimensional Magnetic Field Profile in Hall Thrusters
… structure was investigated using a simple, two-dimensional model, assuming axial symmetry. The previous one-dimensional conclusion, namely that the details of the shape of the magnetic field are unimportant, was confirmed. This result has implications for the design of future Hall thruster …
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Novels materials based on 2-dimensional arrays of metal nanoparticles and microparticles
… self-assembly and develop multi-functional 2-dimensional films based on metal nanoparticles and microparticles via self-assembly combined with other subsequent simple post-processing steps. <br/><br/>The work is based on a general and novel method recently developed by the group in QUB that …
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Generating sequences and semigroups of valuations on 2 dimensional normal local rings
… for valuations dominating the ring of a two dimensional quotient singularity. Suppose that K is an algebraically closed field of characteristic zero, K[X, Y] is a polynomial ring over K and v is a rational rank 1 valuation of the field K(X, Y) which dominates K[X, Y](X,Y) . Given a finite …
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Response of a pendulum spar to 2-dimensional random waves and a uniform current
… the response of a circular pendulum spar in 2-dimensional waves and a uniform current is developed. The linear forces on the cylinder are predicted using an approximate potential flow theory for slender bodies. The dynamic equations are then amended to account for the wake effects of viscous …
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Optimised spectral processing and lineshape analysis in 2-dimensional J-resolved NMR spectroscopy based metabolomics
NMR spectroscopy is a primary analytical approach of metabolomics. Although 1D 1H NMR spectroscopy is versatile, highly reproducible and widely used, analysis of complex biological samples yields congested spectra with many overlapping signals. This makes metabolite identification and …
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Aspects of critical spin 1 chains and 2 dimensional symmetry protected topological phases of matter
… of the partition function of the one-dimensional edge theory can be used to diagnose whether, by adding a suitable potential, the edge theory can be gapped or not without breaking the symmetry. By taking bosonic phases described by Chern-Simons K-matrix theories and fermionic phases …
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Electrohydrodynamic focusing and light propagation in 2-dimensional microfluidic devices for preconcentration of low abundance bioanalytes
… In this research a novel approach of using a 2-dimensional planar microfluidic device is presented with an open 2D-plane space instead of conventional microchannel system. Such devices can allow pre-concentration of large volume of species and are relatively simple to fabricate. Fluid flow in …
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A distributed control reconfiguration algorithm for 2-dimensional mesh architectures which tolerates single faults per row
A reconfiguration is developed for 2-dimensional mesh architectures and applied to a fault T tolerant cellular architecture. The reconfiguration is accomplished by adding communications paths to each cell which can be enabled by means of transistor switches controlled by decoding the contents of a …
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