Search results | J. Murrey Atkins Library

Title: AN INVESTIGATION INTO THE PERFORMANCE OF A FLUX CONCENTRATION MAGNETIC GEARBOX AND MAGNETICALLY GEARED MOTORS
Author: Som, Debarupa
Date Created: 2020
Subjects--Topical: Electrical engineering, Electromagnetism
Description: In today’s world, renewable energy sources like wind and ocean energy have come more into prominence as a source of sustainable energy. The energy conversion devices used in these cases, utilize mechanical gearboxes to match the speed of the input...

Title: AN INVESTIGATION INTO THE TORQUE CAPABILITIES OF HIGH GEAR RATIO MAGNETIC GEARBOXES
Author: Li, Kang
Date Created: 2018
Subjects--Topical: Electrical engineering, Early childhood education, Electromagnetism
Description: Mechanical gears can be as small as those in traditional mechanical watches or as large as those in mechanical marine turbines. They can be seen in almost all transportation tools, for example, bicycles, cars, trains and airplanes. Though they hav...

Title: Advanced Metasurface Design and Integration for Electromagnetic Systems
Author: Hecht, Kristy
Date Created: 2023
Subjects--Topical: Electromagnetism
Description: In the realm of metamaterials and electromagnetic engineering, a metasurface is a two-dimensional array of subwavelength-scale structures meticulously engineered to manipulate electromagnetic waves. Unlike conventional bulky optical elements, meta...

Title: An Investigation Into the Torque Density Capabilities of Flux-Focusing Magnetic Gearboxes
Author: Uppalapati, Krishna Kiran
Date Created: 2015
Subjects--Topical: Electrical engineering, Power resources, Electromagnetism
Description: Wind and many rotary based ocean energy conversion devices rely on a mechanical gearbox to increase their speed so as to match the requirements of the electromagnetic generator. However, mechanical gearboxes have a number of disadvantages such as ...

Title: Broadband and Reconfigurable Filtering Antennas for Next Generation Mobile Wireless Communications Systems
Author: Shehan, Joshua
Date Created: 2018
Subjects--Topical: Electrical engineering, Electromagnetism
Description: Mobile wireless communications systems, particularly at the base station level, are ever evolving to provide more data with better coverage resulting in continuously evolving antenna technology. From first generation (1G) mobile networks deployed ...

Title: Dynamic suspension modeling of an eddy-current device: an application to Maglev
Author: Paudel, Nirmal
Date Created: 2012
Subjects--Topical: Electrical engineering, Power resources, Electromagnetism
Description: When a magnetic source is simultaneously oscillated and translationally moved above a linear conductive passive guideway such as aluminum, eddy-currents are induced that give rise to a time-varying opposing field in the air-gap. This time-varying ...

Title: EXTERNAL WAVELENGTH STABILIZATION OF GRATING COUPLED SURFACE EMITTING LASERS AND APPLICATIONS
Author: Yilmaz, Yigit
Date Created: 2012
Subjects--Topical: Electrical engineering, Optics, Electromagnetism
Description: In this dissertation, we explore a semiconductor optical device configuration based on non-resonant diffraction grating coupler. These devices are coupled with monolithic and external wavelength selection elements to form the resonant cavity lasin...

Title: Exploiting Metamaterials: Fundamentals and Applications
Author: Karami, Morteza
Date Created: 2017
Subjects--Topical: Optics, Physics, Electromagnetism
Description: Metamaterials are man-made structures developed to engineer electromagnetic waves, and they have been studied intensely in recent decades. Although there are still debates about the performance of these types of artificial materials, many practica...

Title: FRACTAL-INSPIRED SUBWAVELENGTH GEOMETRIC INCLUSIONS FOR IMPROVEMENT OF HIGH-FREQUENCY ELECTROMAGNETIC DEVICES
Author: Smith, Kathryn
Date Created: 2018
Subjects--Topical: Electromagnetism
Description: This dissertation presents research results demonstrating the efficacy of fractal-inspired subwavelength geometric inclusions for improvement of high-frequency electromagnetic devices. It begins with a review of the open literature in the area of ...

Title: High-order integral equations for electromagnetic problems in layered media with applications in biology and solar cells
Author: Zinser, Brian
Date Created: 2016
Subjects--Topical: Mathematics, Cytology, Electromagnetism
Description: We present two distinct mathematical models where high-order integral equations are applied to electromagnetic problems. The first problem is to find the electric potential in and around ion channels and Janus particles. The second problem is to f...

Title: MANAGEMENT OF OPTICAL ABSORPTION IN PLASMONIC METAMATERIALS
Author: Alisafaee, Hossein
Date Created: 2015
Subjects--Topical: Electromagnetism
Description: In this dissertation, the main focus has been on the manipulation of optical absorption. That is to either decrease the unwanted losses or increase the desired absorption for specific applications. The approaches have been chosen to provide insigh...

Title: MODELING, ANALYSIS, AND CONTROL OF A RADIAL ELECTRODYNAMIC WHEEL VEHICLE AND ANALYSIS OF AN AXIAL ELECTRODYNAMIC WHEEL
Author: Wright, Jason
Date Created: 2019
Subjects--Topical: Electrical engineering, Electromagnetism
Description: Maglev, the concept of using magnetic forces to levitate a vehicle above a guideway for frictionless motion, has received renewed interest as of late due to several high profile projects, including the proposed next-generation transit system Hyper...

Title: Microwave power imaging for ultra-wide band early breast cancer detection
Author: Shao, Wenyi
Date Created: 2012
Subjects--Topical: Electrical engineering, Biomedical engineering, Electromagnetism
Description: Due to the critical need for complementary or/and alternative modalities to current X-ray mammography for early-stage breast cancer detection, a 3D active microwave imaging system has been developed. This thesis presents a detailed method for rapi...

Title: THREE-DIMENSIONAL STEADY STATE AND TRANSIENT EDDY CURRENT MODELING
Author: Paul, Subhra
Date Created: 2014
Subjects--Topical: Electrical engineering, Electromagnetism
Description: Maglev transportation using electrodynamic wheels is a promising new technology aimed at providing a low cost, high-speed and environmental friendly mode of transportation. In this technology, Halbach permanent magnet rotors, termed electrodynamic...

Title: Ultra-Wideband Contactless Current Sensors for Power Electronics Applications
Author: Parsa Sirat, Ali
Date Created: 2023
Subjects--Topical: Electrical engineering, Electromagnetism
Description: Enhanced power density factors can be achieved in the new generation of power electronics by utilizing wide-bandgap semiconductor switching devices with higher switching speeds and lower losses. These characteristics make high-frequency switching ...