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In quest of improved nanomechanical sensitivity at larger damping and applications in ambient conditions
DownloadFall 2019
In the current state-of-the-art, a wide variety of devices, from computer clocks to smartphone accelerometers and from pressure gauges to atomic force microscope sensors, rely on mechanical resonators, either in microscale or nanoscale. Nanoscale mechanical resonators have even more potential...
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Industrial emissions and Children’s Environmental Injustice in Canada: Exploring geographical patterns and an example of its relation to Children’s Cancer in Manitoba
DownloadFall 2015
Background: Environmental Injustice (EI) suggests that socioeconomically disadvantaged citizens/minority groups have a higher than average exposure to environmental contaminants and bear more subsequent health risks than their socioeconomically advantaged/majority group counterparts. In order to...
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Metallic thin films for NEMS/MEMS: from fundamental behaviour to microstructural design and fabrication
DownloadFall 2011
The main focus of this thesis is the study of thin metal films in microelectromechanical/nanoelectromechanical systems (MEMS/NEMS), ranging from application to fundamental behaviour. The use of metallic structural components is desirable since they are electrically conductive, optically reflective...
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Fall 2016
Mass sensitive mechanical resonator based biosensors are a promising label free biological sensing platform due to the capability for high sensitivity, fast response, accurate and real time measurement, integration with traditional electronics and flexible readout techniques. With the advancement...
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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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Nanophotonic detection of nanomechanical structures for use toward mass sensing applications
DownloadSpring 2014
Nanomechanical beam resonators show much promise for use in integrated on-chip mass sensing systems. This follows from their own very small masses and also their ability to store the mechanical energy of their oscillations to produce strong measurable mechanical response signals. To achieve...
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Fall 2014
Torsional oscillators are well known for their extensive applications ranging from measuring gravity to detecting angular momentum of light. When these torsional resonators scale down, through advanced nanofabrication techniques, the applications extend to measuring quantum effects such as the...
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Fall 2018
Ghoraishi Kahangi, Maryam Sadat
Due to their ability to measure extremely small displacements and forces, nanomechanical cantilevers have attracted considerable attention from numerous scientific communities, each exploring a variety of applications. Though typically operated in either vacuum or air, operation of the device in...
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Social Contexts of Environmental Practices: How Sustainable Development Discourses and Trust Mediate the Use of Genomics in the Alberta Beef Industry
DownloadFall 2014
In the face of environmental degradation resulting from beef production, genomics may add to the options available to producers seeking to reduce their environmental impacts. This research seeks to understand cow/calf producer experiences with the environment, the environmental impacts of their...
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Fall 2010
The scanning tunneling microscope (STM) based on quantum tunneling can attain atomic-scale spatial resolution and help elucidate a wealth of phenomena in the microscopic world. However a limitation in scanning tunneling microscopy is the low temporal resolution due to readout circuit frequency...