Search results | J. Murrey Atkins Library

Title: Path Integral Methods Using Feynman-Kac Formula and Reflecting Brownian Motions for Neumann and Robin Problems
Author: Zhou, Yijing
Date Created: 2016
Subjects--Topical: Mathematics
Description: In this dissertation, we propose numerical methods for computing the boundary local time of reflecting Brownian motion (RBM) in 3d and its use in the probabilistic representation of the solution of the Laplace equation with the Neumann and Robin b...

Title: Calibrating slope-dependent errors in profilometry
Author: Zhou, Yue
Date Created: 2014
Subjects--Topical: Mechanical engineering, Optics
Description: Optical profilometers, such as scanning white light interferometers and confocal microscopes, provide high resolution measurements and are widely utilized in many fields for measuring surface topography. The techniques are capable of high-speed su...

Title: 3D Printing of Metamaterials with Conductive Elements
Author: Tuttle, Geoffrey
Date Created: 2016
Subjects--Topical: Materials science
Description: To fulfill their engineered purpose, resonant metamaterials require arrays of complex three-dimensional geometries composed of non-conductive dielectrics and highly conductive materials. In order to create these geometries, 3D printers must be abl...

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: MECHANISTIC STUDY OF SELF-ASSEMBLED TUNGSTEN NANOGRATINGS ON SOLIDS INDUCED BY FEMTOSECOND LASER BEAM
Author: Tang, Mingzhen
Date Created: 2010
Subjects--Topical: Optics
Description: This dissertation describes a mechanistic study on the spontaneous formation of tungsten nanograting induced by a 400 nm femtosecond laser beam on solids observed in laser induced chemical vapor deposition configuration. The formed tungsten nanogr...

Title: LOW UNCERTAINTY SURFACE AREA MEASUREMENT USING DEFLECTOMETRY
Author: Pouya Fard, Ali
Date Created: 2018
Subjects--Topical: Optics, Engineering, Metaphysics
Description: Deflectometry has been introduced as a viable alternative to interferometric measurement of specular freeform optical surfaces. Deflectometry measurements show high repeatability; however, due to the errors remaining after the calibration and data...

Title: Effects of Edge Roughness on Optical Scattering from Periodic Microstructures
Author: Bergner, Brent
Date Created: 2009
Subjects--Topical: Optics, Nanotechnology
Description: Planar photonic crystals and other microstructured surfaces have important applications in a number of emerging technologies. However, these structures can be difficult to fabricate in a consistent manner. Rapid, precise measurements of critical p...

Title: Evaluation of curved surfaces with x-ray reflectometry
Author: Cole, Jacob
Date Created: 2022
Subjects--Topical: Mechanical engineering, Physics
Description: This dissertation presents a body of work developing novel models and methods for surface evaluation with X-ray reflectometry (XRR). At the time of this work, XRR is a highly used tool for the measurement of flat wafers and laminated semiconductor...

Title: Evaluation of Spatial Resolution and The Non-Linearity Analysis for 3-D Metrology
Author: Jain, Swati
Date Created: 2021
Subjects--Topical: Optics, Physics
Description: Structured light systems (SLS) have become increasingly important for three-dimensional shape measurements. A quantitative evaluation of the spatial resolution is also becoming increasingly important. The spatial frequency response of the instrume...

Title: Electromagnetic Wave Phenomena In Periodic Metastructures
Author: Schenk, John
Date Created: 2010
Subjects--Topical: Electrical engineering, Optics, System theory
Description: There is an active effort toward the development of negative index metamaterials for application in high-resolution imaging. In particular, engineering an artificial material exhibiting an index of exactly -1, may permit sub-wavelength imaging. Th...

Title: Complex photonic crystals for broadband "all-angle" self-collimation
Author: Chuang, Yi-Chen
Date Created: 2010
Subjects--Topical: Optics
Description: Self-collimation is a dispersion property of many photonic crystals (PCs), in which light beam can propagate free of divergence in the PCs. While self-collimation is a desired property for applications related to wave guiding and light collection,...

Title: Bohmian Trajectories of Interacting Particles Trapped in a Two-dimensional Harmonic Well
Author: Keithly, Gregory
Date Created: 2021
Subjects--Topical: Physics
Description: Bohmian mechanics is an alternate formalism of quantum mechanics that posits a particle is always existent, and furthermore there is a separate entity describing a wave-like disturbance in space and time, governed by the Schrodinger equation, that...

Title: OPTICAL CHARACTERIZATION OF INHOMOGENEITIES IN BLUE-EMITTING INGAN/GAN MQWS
Author: Li, Cheng
Date Created: 2014
Subjects--Topical: Electrical engineering
Description: The growth of blue-emitting InGaN/GaN MQWs, the system setup of a low temperature PL/EL/IV system for temperature dependent PL/EL/IV spectroscopy, and the system setup of a CLSM with nanometer-scale spectrum measurement and TRPL measurement abilit...

Title: PHASE STRUCTURED WAVEFIELDS WITH PHASE SINGULARITIES AND BISPECTRAL PROPERTIES
Author: Scipioni, Marco
Date Created: 2010
Subjects--Topical: Optics
Description: The work presented in this dissertation can be subdivided into two parts. The first part illustrates the novel use of a 37 actuator segmented deformable mirror for the creation of optical vortex beams ranging in topological charge from 1 to 10. Th...

Title: Stratified Fiber-Resonator: Fabrication, Characterization and Potential Applications
Author: Naqvi, Zeba
Date Created: 2017
Subjects--Topical: Optics
Description: Whispering Gallery Mode Resonators (WGMR) are compact, monolithic resonators used for photonic applications. Controlling the properties of WGM while keeping the geometry simple is desired to improve their performance, especially for sensing and no...

Title: Physics Informed Machine Learning Models for PDEs with Applications to Laser Bioeffects
Author: Seman, Matthew
Date Created: 2023
Subjects--Topical: Artificial intelligence, Physics
Description: Recently, advances in the efficiency of gradient calculation algorithms have sparked anexpansion of neural network applications, particularly in the field of approximating partial differential equation (PDE) solutions. Among the most novel and eff...

Title: A Detailed Description of Keldysh's Model of Photoionization
Author: Darden, Kenan
Date Created: 2023
Subjects--Topical: Physics, Optics, Quantum theory
Description: Leonid Keldysh’s 1965 paper "Ionization in the Field of a Strong Electromagnetic Wave" contains useful and simple-to-implement equations predicting the rate of photoionization in both atomic gasses and general crystalline solids. Crucially, his re...

Title: Intracellular Subsurface Imaging Using a Hybrid Shear-Force Feedback/ Scanning Quantitative Phase Microscopy Technique
Author: Edward, Kert
Date Created: 2009
Subjects--Topical: Optics
Description: Quantitative phase microscopy (QPM) allows for the imaging of translucent or transparent biological specimens without the need for exogenous contrast agents. This technique is usually applied towards the investigation of simple cells such as red b...

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: WAVEGUIDE, PHOTODETECTOR, AND IMAGING APPLICATIONS OF MICROSPHERICAL PHOTONICS
Author: Allen, Kenneth
Date Created: 2014
Subjects--Topical: Optics, Engineering, Physics
Description: Dielectric microspheres with diameters (D) on the order of several wavelengths of light have attracted increasing attention from the photonics community due to their ability to produce extraordinarily tightly focused beams termed "photonic nanojet...