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 19 of 19 for “"resonant coupling"”.
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Dicke enhanced energy transfer via off resonant coupling y Christopher Black.
… exchange in a model for second-order (indirect) coupling through off-resonant states. Specifically, the model hosts a second-order transfer of energy between two collections of two level systems via an off-resonant oscillator. No first-order transfer of energy is possible because the systems are …
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Population-specific predictions for the finite Kuramoto model and collective synchronization in a system with resonant coupling
… at a critical value of the inter-oscillator coupling. Also, in spite of being a microscopic model that describes the interactions between individual oscillators, Kuramoto's model can be recast exactly as a mean field model. A great deal of work has focused on predicting the behavior of the …
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Design and manufacturing analysis of resonantly coupled circuits and other components used for applied wireless power transmission : application analysis
… the mechanism after the implementation of a resonantly coupled circuit used to receive and transmit wireless energy. Ultimately, the wireless energy is used to generate heat, which in turn causes a polymeric material to expand, thereby creating a mechanical force to disengage the locking …
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PLASMONIC NANOPARTICLES AS VERSATILE NANORULERS FOR SENSING APPLICATIONS: DEVELOPING THE NANOPARTICLE-ON-MIRROR ARCHITECTURE
The basis of plasmonic sensors is the resonant coupling between the oscillations of free electrons, called plasmons, and incident visible light waves. By confining these oscillations within a nanostructure, the coupling efficiency is enhanced by the creation of localized surface plasmon resonant …
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Progress in metamaterials : magnetic hybridization of electric dipole resonance and inhomogeneous structures for thin-film lenses
… field of metamaterials and demonstrate a novel resonant coupling between the structural resonance in the permeability of a fishnet and a material resonance in the dielectric spacer layer. The resonances in the permeability and the negative index response exhibit anti-crossing behavior. We …
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SPECTROSCOPIC STUDY OF ICES WITH ASTROPHYSICAL INTEREST
… of isotopes of CO2 using IR features due to resonant coupling in the solid is presented in Chapter 6. It is the first experimental study of self-diffusion in CO2 thin films and also the first study of using this method in thin films. </p>
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Experiments to develop High Q and tunable superconducting coplanar resonators applicable for quantum bit technology
… in excess of a million have been observed. The resonant frequency as a function of temperature of a coplanar resonator is characterised in terms of the change in the number density of superconducting electrons. At lower temperatures, the resonant frequency no longer follows this function, and …
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The (Semi-)Classical Vibrational Echo
… diagrams. We have investigated the role of resonant coupling on the quantum mechanical vibrational echo at zero temperature and have analytically taken the classical limit of this expression to investigate the effect of resonance on classical echoes. Finally, we have developed a formalism …
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Integrated spot size converters for InP based photonic systems
… optical modules on a single chip. Low loss fiber coupling and simplified packaging are key issues in keeping the price of PICs at a low level. Integrated spot size converters (SSC) offer an opportunity to accomplish this. Design, fabrication and characterization of SSCs based on an asymmetric twin …
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Optimization of Near Field Coupling for Efficient Power Transfer Utilizing Multiple Coupling Structures
… to a number of options, including near field resonant magnetic coupling. Previous research with mid-range (dâ 4r) wireless power transfer has resulted in coupling efficiencies of close to 40%. In order to increase efficiency in transfer a more directive transmission system was developed using …
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The projective to Einstein correspondence and a kink on a wormhole
… We present some results on the non–linear resonant coupling between the discrete and continuous spectra in the range of a where there is exactly one discrete mode. The second part of the thesis is based on recent work by Dunajski and Mettler. They show that a class of neutral signature …
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Biopsy-implantable chemical sensor
… that enables the wireless measurement. The resonant coupling allows wireless NMR measurements with enhanced signal-to-noise ratio. The field inside the sensor is amplified compared to the surrounding tissue. The amplification localizes the measurement to the sensor and eliminates any signal …
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Photonic crystal enhancement and tuning of quantum dot emission
… in orthogonal directions to enable simultaneous resonant coupling of ultraviolet excitation photons to the QDs and visible QD emission at two different wavelengths to efficiently extract photons normal to the PC surface. The combined excitation and extraction enhancements result in a 5.8X …
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Micro-assembly of integrated photonic devices using a high accuracy transfer printing process
… controllable manner, demonstrating variation in resonant coupling conditions with respect to the lateral coupling offset. Further to this, the TP method provides a means to produce 3D device architectures without any limiting multi-step full wafer bonding methods. By vertical assembling 3D …
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Multimode Ultrastrong Coupling with FW-BICs in THz Metasurface
… systems, that show the phenomena of ultra strong coupling (USC), have applications in nonlinear harmonic generation, low loss on-chip communication, and will be critical for quantum computing architectures including the growing sector of quantum information technology. USC can be achieved by …
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Photonic design for chemical analysis
… in a similar way. When applied to coupled-resonant systems, our method constrains ratios of resonant coupling/decay coefficients. We also obtain a relation for the relative phase of fields excited from the two ports and the ratio of field intensities in a two-port system. In addition, …
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Ocean bottom seismic scattering
… secondary sources of seismic energy can cause a resonant coupling of body wave energy into interface (Stoneley) waves at the seafloor. This is possibly one mechanism by which natural seismic and storm generated acoustic energy can be coupled into seafloor noise. The applicability of the use of …
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A mechanistic investigation of nonlinear interfacial instabilities leading to slug formation in multiphase flows
… to identify a mechanism composed of a triad of resonantly interacting interfacial waves which are influenced by the Kelvin-Helmholtz interfacial instability. The mechanism that is identified permits the rapid energy transfer from linearly unstable short waves to stable long waves through …
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Modeling and Optimization of Rechargeable Sensor Networks
… technology is based on the so-called magnetic resonant coupling (MRC), which allows electric energy to be transferred from a source coil to a receive coil without any plugs or wires. The advantages of MRC are high energy transfer efficiency even under omni-direction, not requiring line-of-sight …