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 56 for “"optomechanical"”.
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Non-suspended optomechanical cavities
… phononic localization in the majority of cavity optomechanical devices relies on creating suspended devices whose substrate has been selectively removed. However, this approach hinders integration with other quantum computing and communication components. As an alternative, we have developed …
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A room temperature optomechanical squeezer
Decades of advancement in technologies pertaining to interferometric measurements have made it possible for us to make the first ever direct observation of gravitational waves (GWs). These GW emitted from violent events in the distant universe bring us crucial information about the nature of matter …
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Nanophotonic Optomechanical Devices for Torque Magnetometry
… integrated into a nanomechanical resonator for optomechanical detection of torque driven by the interaction of a permalloy island with applied magnetic fields. This marks the first time were a nanocavity optomechanical sensor is applied to a nanoscale condensed matter system. This cavity …
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Signatures of non-classicality in optomechanical systems
… thesis contains several theoretical studies on optomechanical systems, i.e. physical devices where mechanical degrees of freedom are coupled with optical cavity modes. This optomechanical interaction, mediated by radiation pressure, can be exploited for cooling and controlling mechanical …
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Optomechanical anisotropy in nanoengineered polymer photonic crystals
… symmetry, accompanied by synchronised optomechanical measurements, reveals strong anisotropic optomechanical properties. It is shown that mechanical properties are primarily dominated by the viscoelastic nature of the shell material, while the strain-induced symmetry breaking reveals …
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Optomechanical Spin-Photon Interface in Wide-Bandgap Materials
… the mechanical resonator and optics. Cavity optomechanical devices overcome this impediment by integrating mechanical resonators with an optical cavity. Device engineering can maximize cooperativity, which describes the probability of coherent interaction between photon and phonon fields. …
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Development of predictable palladium based optomechanical hydrogen sensors
… fabrication, and testing of palladium based optomechanical sensors, particularly to elucidate the role of hydrogen induced lattice expansion in their design and functionality. Two specific sensor designs: a nano-aperture based sensor and a cantilever based sensor were designed, fabricated, …
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Suppression of disorder-induced scattering in optomechanical systems
… through parity-selective optomechanics. Such optomechanical interaction is achieved by Brillouin scattering, owing to the phase-matching condition. This method enables complete linear optical isolation without requiring magnetic fields. Instead, the isolation originates from a nonreciprocal …
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Nonlinear dissipative dynamics of optomechanical and laser arrays
… synthetic dynamical gauge fields for photons in optomechanical arrays and (ii) laser arrays with a topologically nontrivial structure. The chosen models are relevant to state-of-the-art optomechanical experiments as well as to recent implementations of topological lasers based on semiconductor …
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Optomechanical Design of a Space Telescope Primary Mirror
… The objective of this research is to propose the optomechanical design solution the primary mirror of a space telescope. It includes designing of the lightweight structure of the primary mirror based on Finite Element Analysis. Open back pocketing will be used to lightweight the primary mirror. …
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Optomechanical damping of a microcantilever force sensor in liquid
A new instrument, constant deflection atomic force microscopy (CD-AFM) constructed to perform force spectroscopy measurements without mechanical instabilities associated with the use of soft AFM cantilevers has been developed, tested and calibrated. One of the major limitations associated with the …
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Investigating the foundations of quantum physics with optomechanical setups
… and probing collapse models, making use of optomechanical setups.<br/><br/>To answer the question whether a system has a quantum or classical dynamics, we will propose a theoretical test of Leggett-Garg inequalities, as tool to probe the macrorealism of an optomechanical system.<br/><br/>We …
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Optomechanical Devices and Sensors Based on Plasmonic Metamaterial Absorbers
… comparing to a uniform gold film. In an optomechanical device, the optical mode and mechanical mode are mutually influenced, through the optical forces exerted on the mechanical oscillator and the detuning of optical resonance by the mechanical oscillator, so that the mechanical …
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Optomechanical and wavelength alignments of CubeSat laser communication Systems
… and this thesis focuses on alignments in the optomechanical system and transmitter system of the NODE payload. First, simulation and analyses are performed on an optomechanical model of NODE to study the effects potential misalignments of hardware components can have on the overall system. …
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The Stochastic Dynamics of Optomechanical Sensors for Atomic Force Microscopy
… a mechanical resonator (nanobeam) used in cavity optomechanical sensors for atomic force microscopy. Atomic force microscopy (AFM) is a tool to image surface topology down to the level of individual atoms. Conventional AFM has been an essential tool for micro and nanoscale studies in physics, …
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Release-free silicon optomechanical devices with Bound-state In the Continuum
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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Optomechanical design, analysis, and testing of the nanosatellite optical downlink experiment
… less power and mass. This thesis describes the optomechanical design, analysis, and test results of the Nanosatellite Optical Downlink Experiment (NODE). NODE is a CubeSat FSO communication system demonstration mission. The NODE payload is a hosted payload that is designed to establish and …
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High-throughput real-time sensing in optomechanical systems with opto-mechano-fluidics
Embargo set by: Seth Robbins for item 121157 Lift date: 2024-01-12T22:51:46Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system
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Design and Fabrication of Optomechanical Formalin Fixation Monitoring Systems Integrated with a Millifluidic Device
Engineering design is a multi-step process and becoming more challenging when it comes to a translational system that requires new information framework for interdisciplinary fields such as medicine. The translational research is initiated from identifying a clinical niche and followed by …
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