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Skip to Search Results- 1Amin, Muhammad Ruhul
- 1Bryce, Robert M
- 1Compton, Shawn R
- 1Fraser, Alastair
- 1Hauer, Bradley
- 1MacDonald, Allison J. R.
Results for "departments_tesim:"Department of Physics""
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Fall 2010
Electro-transmittance of molecular junctions was characterized electrically and studied optically at 410nm and 532nm. Between 1kHz and 100kHz there was no qualitative difference between the control samples and the molecular junction samples, however there were difficulties with reproducibility of...
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Spring 2010
The procedure for milling micrometre scale cantilevers of lutetium iron garnet using a focused ion beam microscope was developed. The infrastructure to study these cantilevers using rotational hysteresis loops and ferromagnetic resonance experiments was set up. The cantilevers were shown to...
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Nanofabrication Methods Towards a Photonically-Based Torque Magnetometer for Measurement of Individual Single-Crystalline Yttrium-Iron-Garnet Microstructures
DownloadSpring 2012
This thesis describes preparation and nanofabrication of single crystalline yttrium-iron-garnet (YIG) for the purposes of ultra-clean torque magnetometry, as well as the design, fabrication, and testing of photonic crystal-based nanoelectromechanical systems for sensing applications. A focused...
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Fall 2022
This thesis lays out the work required to design and create a platform for cryogenically compatible testing of on-chip microwave resonators, intended as a platform for quantum-limited electromechanical torque sensing. We have created a platform with less than 8 dB loss across an operating range...
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Spring 2014
A granular superconductor is a system that consists of two types of materials, one is superconducting, and the other is insulating. Instead of alloying, these two materials form a granular structure where superconducting grains are embed in an insulating matrix. This is a seemingly simple...
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Spring 2020
Cryogenic optomechanical cavities fabricated from silicon are promising candidates for quantum information applications and platforms to study mesoscale quantum physics. However, the low temperature behaviour of these devices remains shrouded in mystery. To elucidate this, we have designed and...
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Study of Exchange Bias and Interfacial Coupling Effects in a Micromagnetic Thin Film Bilayer
DownloadFall 2022
Exchange bias and interfacial coupling effects in thin-film bilayers of magnetic materials were investigated during the period July, 2018, to Sep, 2021. Thin films of permalloy and cobalt oxide were deposited, in the form of micrometer size bilayer disks, on doubly-clamped nanomechanical...
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Fall 2015
Cavity optomechanical devices are interesting systems for probing quantum mechanical behaviour of mesoscopic objects. A basic requirement for these types of experiments is preparation of the mechanical resonator in, or at least very close to, its ground state. Although active laser cooling...
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Spring 2015
Optomechanics, the sensing of mechanical movement using optical modes, has seen great advancement in recent years and has been used for its high displacement sensitivity to couple to a variety of mechanical devices. Torsional devices have historically been used for measuring de Haas-van Alphen...