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.
Results
Showing 1 to 10 of 10 for “"non-reciprocity"”.
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Non-reciprocity in piezoelectric and electrostatic microelectromechanical systems
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Acoustic non-reciprocity in passive nonlinear waveguides with configurational asymmetry
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Analytical and Spectro-Spatial Analyses of Nonlinear Metamaterials for Vibration Control, Energy Harvesting, and Acoustic Non-Reciprocity
This dissertation investigates the nonlinear wave propagation phenomena in nonlinear metamaterials with nonlinear chains and nonlinear resonators using analytical and spectro-spatial analyses. In the first part of the thesis, the nonlinear metamaterials are modeled as a chain of masses with …
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Non-Hermitian Topology and Directional Amplification in Driven-Dissipative Cavity Arrays
… we first develop a unifying framework based on non-Hermitian topology to understand non-reciprocity and directional amplification in driven-dissipative cavity arrays. Specifically, we unveil a one-to-one correspondence between a non-zero topological invariant defined on the spectrum of the …
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Brillouin scattering induced transparency and generation of slow and fast light
… slope of the probe phase response. Lastly, the non-reciprocity of Brillouin scattering is theoretically considered. The non-reciprocity, or a break in time reversal symmetry, is a unique property of Brillouin scattering process due to the traveling surface acoustic wave which is used for phase …
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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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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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Realisation of De Gennes’ Absolute Superconducting Switch and Magnetic Exchange Field Effects at Metallic and Superconductor Interfaces
… fringing fields generated by EuS, which causes a non-reciprocity of the critical supercurrent density, i.e., we observe a superconducting diode-like effect. Next, we demonstrate the MEF effects at interfaces between EuS and metallic Au thin-films by investigating the longitudinal and Hall …
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Collective and emergent behavior of living systems
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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Nonreciprocal coupling to microstrip resonators
"Inducing nonreciprocal wave propagation is a fundamental challenge across a wide range of physical systems in electromagnetics, optics, and acoustics. Linear, time-invariant systems are always reciprocal, but reciprocity can be broken through the action of a bias that is asymmetric under …