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 “"Coupled Resonators"”.
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MEMS MULTI-DOF WEAKLY COUPLED RESONATOR BASED ON MODE LOCALIZATION FOR MASS CHANGE SENSING APPLICATIONS
… the potential of a 3-DOF mode localized weakly coupled resonator. A novel reversible method which exploits the usage of nanoparticles as well quantified mass changes is described. The mass sensitivity of the coupled resonator can be characterized accordingly. It has been demonstrated that a) the …
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Modelling and performance evaluation of coupled micro resonator array for artificial nose
… research presents a new sensor structure, the coupled micro resonator array (CMRA) as an approach to reduce the complexity of large artificial nose sensing system. The aim is to exploit multiple resonant sensors with a simplified readout. The CMRA working principle is based on mass loading …
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Modeling of sequences of Silicon micro-Resonators for On-Chip Optical Routing and Switching
… routing concepts based on micro optical side coupled resonators to achieve large bandwidth by multiple cascading and/or multiple coupling (low group velocity) periodicity effects. We will describe some technical aspects necessary for the design and fabrication of some passive circuitry, and …
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Dynamic plasma photonic crystals: multidimensional electromagnetically active artificial structures in the mm-wave and thz regimes
… of hybrid microplasma structures as tunable coupled resonators and photonic crystals. An inverse molding method was developed to form three-dimensional (3D) complex microcapillary networks within a polymer scaffold. Generation of plasma within these microcapillaries formed dynamic 3D plasma …
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A retrot current sensor for non-intrusive power monitoring at the circuit breaker
… sense current from the breaker face. Two coupled resonators form an inductive link that serves as a communication channel through the steel breaker panel door. A passive, balanced JFET mixer circuit transmits the sensed current signal through the inductive link by impedance modulation. …
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Delta-Sigma digital-RF modulation for high data rate transmitters
… is designed and implemented using differential coupled resonators.
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Practical realisation of multiband planar filters on multilayer substrates
… approaches Investigations on narrowband with coupled resonator filters representation and wide-band with quasi-lumped element filters representation of up to quad-bands based on reactance transform method are undertaken. With the emphasis on practical aspects such as losses and selectivity, …
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Photostabilization of J-aggregate cyanine dyes for exciton-polariton based devices
… becoming a commonly used material in strongly coupled systems as they possess large exciton binding energies and huge oscillator strengths that have allowed for the creation of room temperature polariton condensates, superfluids, and other exotic phenomena. Using J-aggregates, the aggregated …
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Bandwidth enhancement techniques for low-profile antennas: Theory and experiment
… antennas. The first method involves the use of coupled resonators. In particular, two cavity-backed slot antennas are coupled through an aperture in a common wall. One cavity-backed slot antenna, of the coupled antenna system, is driven. This coupled antenna system is analyzed using two …
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An energy-efficient wireless data link for implantable electronics
… of data. For low-power operation, inductively-coupled near-field wireless links have shown great promise and were used to develop a power-efficient data link for biomedical implants. A prototype bi-directional, half-duplex wireless link based on inductive coupling was designed in a 0.18 [mu]m …
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Theory and design of high-index-contrast microphotonic circuits
… and parasitic loss effects. Based on microring resonators and HIC silicon and silicon nitride waveguides, the first telecom-grade microphotonic channel add-drop filters are demonstrated, including novel, dispersion-free switchable and widely tunable designs. Several new classes of optical …
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Towards Ultra-High Resolution Mode-localised MEMS Sensors
Sensors employing mode localisation in weakly coupled resonators have been increasingly viewed as an alternative to resonant frequency shift based sensing. Much theory has been proposed highlighting the advantages of these sensors including the increased sensitivity and the promise of common mode …
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Sonic Crystal Noise Barriers
… array of composite scatterers forms a system of coupled resonators and gives rise to multiple low-frequency resonances. Measurements have been made in an anechoic chamber and also on a full-scale prototypes outdoors under various meteorological conditions. The experimental results are found to …
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Analysis and Design of Low-Cost Waveguide Filters for Wireless Communications
… Communications Research Group, using both cross coupled resonators and extracted pole sections (Experiments with higher filter orders, use of tuning screws, degrees of freedom in design, etc. Thorough performance comparison with competing filter technologies) - Proposing novel E-plane filter …
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Novel Metamaterial Blueprints and Elements for Electromagnetic Applications
… purposes. We first employ electric-field-coupled (ELC) resonators and complementary electric-field-coupled (CELC) resonators to design a new class of electrically small antennas. Since electric-field coupled resonators were recently proposed in the literature to obtain negative …
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Development of Active Terahertz Modulators for use with Quantum Cascade Lasers and Near-Field Imaging of their Individual Resonators
… active terahertz modulators based on arrays of coupled resonators loaded with monolayer graphene. The structures affect the amplitude, phase, and polarisation of the transmitted and reflected radiation. These devices were simulated using finite element modelling (FEM) software, fabricated using …
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Terahertz oscillation and stimulated emission from planar microcavities
… microcavities, i.e. micrometer sized optical resonators, the propagation of only one mode is permitted that is simultaneously amplified internally. This particularly strong enhancement of the electric field is directly related to the quality factor of the cavity. By introducing an optical …
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Multimode Ultrastrong Coupling with FW-BICs in THz Metasurface
… spectral line splitting such as that in any two coupled resonators and the resonant coupling leads to light–matter hybridization into two normal modes with an energy separation known as the vacuum Rabi splitting in which the USC regime is reached. For quantum computing platforms, the stronger the …
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Acoustic biosensing using functionalised microbubbles
… in an ultrasound field, they act as non-linear resonators, generating harmonic energies in the scattered acoustic signal, and this can be further exploited for biosensing. Analytical models and finite element method (FEM) simulations for the interaction between high frequency (1-300 MHz) …