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 38 for “"Non-reciprocal"”.
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Investigation of antennas with non-reciprocal radiation characteristics
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Non-reciprocal light transmission in integrated photonic systems via acousto-optic interaction
… foundry-based manufacturing. However, essential non-reciprocal devices such as optical isolators and circulators are not yet available. Commercialized off-chip non-reciprocal systems are primarily based on Faraday rotation in magneto-optic materials. This approach is challenging to implement in …
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Brillouin scattering induced transparency: Coherent optomechanical interaction leading to slow light and non-reciprocal light transmission
… constructed from magneto-optic materials that non-reciprocally rotate the polarization of counter-propagating light. In free-space and fiber optics, Faraday isolators perform extremely well with the difference in forward and backward transmission (isolation contrast) exceeding 40 dB over a wide …
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Integrated optical isolators
… integrated isolators. Because isolators are non-reciprocal devices, they must use a non-reciprocal effect in order to function. A brief description of this phenomenon, known as Faraday rotation, will be given in this chapter. Then previous work on integrated isolators will be presented. …
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Mechanisms of retroviral replication
… NC domain was shown to be the determinant of nonreciprocal RNA recognition by these two viruses.;This study was intended to determine biological activities of previously generated MLV- and SNV-derived Gag-Pol chimeras that retained ability to specifically package viral RNA, but rendered …
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Quantum information processing with geometric phases, cavity magnonics, and semiconductor nanostructures
… (the conversion of quantum information), non-reciprocal behaviours, and the creation of non-classical states. Concerning coherent control, we examine the use of semiconductor-based nanostructures, notably electrostatically defined quantum dots in silicon-germanium heterostructures for …
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Classifying Polynomials With Reducible Nonreciprocal Parts and the Factorization of Values of Polynomials
… or f(x) = -xdegff(1/x), then f(x) is called reciprocal. We refer to the non-reciprocal part of f(x) as the polynomial f(x) removed of its irreducible reciprocal factors. In 1970, Schinzel proved that for a given collection of r+ 1 integers a<sub>0</sub>,&hellip,a<sub>r</sub>, it is possible …
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Three Essays on the Generalized System of (Trade) Preferences
… program in which developed countries offer non-reciprocal tariff reductions (tariff preferences) on certain products imported from designated developing and least developed countries. GSP is considered an important tool in the World Trade Organization's approach to development. This …
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Design of two-tailed swimmer to swim at low-Reynolds number
… viscous forces from the fluid and satisfy the non-reciprocal, cyclic motion requirements of the Scallop Theorem. Furthermore, a swimmer must employ one of the three mechanisms stated by Purcell to be capable of swimming at low Reynolds number, a three link swimmer, a corkscrew, or a flexible …
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Sum-rate maximization for two-way active channels.
… joint power allocation and channel design over a reciprocal two-way active channel. Assuming the channel is reciprocal, we consider the sum-rate maximization problem under the assumption that the powers of transceivers as well as the channel power are limited. The goal is to jointly optimize the …
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Classification of Inbreds for Their Value in Improving Elite Maize Hybrids
… elite hybrid (I$\sb1$ x I$\sb2$) is important. A non-reciprocal diallel of 4 maize (Zea mays L.) inbreds of Stiff Stalk Synthetic, 5 of Lancaster, and 5 of unrelated origin were evaluated for grain yield, grain dry matter, earliness of flowering, total lodging, and plant and ear height at two …
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Theory and design of integrated optical isolators and broadband couplers using Fresnel zone plates
… Eg. We then use this value to calculate a non-reciprocal phase shift in a Manganese, and a N/P doped silicon waveguide using analytic, perturbation, and a novel mode numeric approach. Finally, using the obtained magnitudes of the nonreciprocal phase shifts six integrated optical isolator …
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Ring Resonators Intergrating With Dichoric Materials And In Spin-valley Controlled Photonic Topological System
… without incurring significant losses.</p> <p>Non-reciprocal devices represent a valuable addition to photonic circuits, enabling the creation of unidirectional waveguides that function as optical isolators, preventing signals from the opposite direction. The conventional methodology for …
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Magnetless circulators based on linear time-varying circuits
… using a single antenna. Traditionally, such non-reciprocal components were almost exclusively based on magnetic biasing of rare-earth ferrite materials, which results in bulky and expensive devices that are not suitable for the vast majority of commercial systems. Despite significant research …
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Issues affecting utilization of the European Union’s Generalised System of Preference (GSP)
… including the application of GSP. GSP is a non-reciprocal trade arrangement and can be used initially until free trade agreements, which are reciprocal can be put in place. Brenton (2003). Findings from the research highlights how the UK government would benefit from making GSP simpler for …
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Digital Readout and Control of a Superconducting Qubit
… to millikelvin temperatures, and bulky non-reciprocal elements such as cryogenic microwave isolators. Reliance on these elements makes it impractical to scale existing devices up a single order of magnitude, let alone the 5-6 orders of magnitude needed for performing fault-tolerant …
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Fluidization and Segregation in Confluent Models for Biological Tissues
… linear response does not correctly predict the non-linear behavior, which, in this case, is the ability to exchange neighbors and fluidize. We also construct a simple analytic ansatz that can predict the non-linear behaviour responsible for cellular motion in tissues. Shifting from fluidization …
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Dispersive Readout and Spin-State Spectroscopy of Industrially-Fabricated Silicon Quantum Dots
… the mechanism to be energy-level selective and non- reciprocal for neighbouring charge configurations. Additionally, I report a large coupling of different electron spin manifolds of 7.90 μeV, the largest reported to date, indicating an enhanced spin-orbit coupling which may enable …
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The visitor centre: artistic reconfigurations of multispecies relationships in an urban environment
… to speciesist attitudes and a lack of care for nonhuman species. This thesis is an examination of relational art practice and conversation as tools to encourage empathy and care for nonhuman species in urban environments, here specifically performed in the City of Tshwane/Pretoria. The thesis …
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