Browsing by Subject "Optics"
Now showing items 1-20 of 71
-
Actively Tunable Plasmonic Nanostructures
(2020)Active plasmonic nanostructures with tunable resonances promise to enable smart materials with multiple functionalities, on-chip spectral-based imaging and low-power optoelectronic devices. A variety of tunable materials ... -
Adaptive Optics in Multiphoton Microscopy
(2017)Any type of microscopy faces the problem in an attenuated signal level and reduced optical resolution due to optical aberration. To overcome this problem, adaptive optics was implemented in a two-photon fluorescence microscope. ... -
Advanced Applications of 3D Dosimetry and 3D Printing in Radiation Therapy
(2016)As complex radiotherapy techniques become more readily-practiced, comprehensive 3D dosimetry is a growing necessity for advanced quality assurance. However, clinical implementation has been impeded by a wide variety of ... -
Analysis of High-Temperature Solar Selective Coating
(2018)Abundant and widely available solar energy is one possible solution to the increasing demands for clean energy. The Thermodynamics and Sustainable Energy Laboratory (T-SEL) in Duke University has been dedicated to investigating ... -
Bounding the outcome of a two-photon interference measurement using weak coherent states
(OPTICS LETTERS, 2018-08-15) -
Clinical Detection of Dysplasia Using Angle-Resolved Low Coherence Interferometry
(2011)Cancer is now the leading cause of death in developed countries. Despite advances in strategies aimed at the prevention and treatment of the disease, early detection of precancerous growths remains the most effective method ... -
Coding Strategies and Implementations of Compressive Sensing
(2016)This dissertation studies the coding strategies of computational imaging to overcome the limitation of conventional sensing techniques. The information capacity of conventional sensing is limited by the physical properties ... -
Coherence in Dynamic Metasurface Aperture Microwave Imaging Systems
(2020)Microwave imaging systems often utilize electrically large arrays for remote characterization of spatial and spectral content. Image reconstruction involves computational processing, the success of which depends on adequate ... -
Collective light-matter interactions via emergent order in cold atoms
(2012)Collective behavior in many-body systems, where the dynamics of an individual element depend on the state of the entire ensemble, play an important role in both basic science research and applied technologies. Over the ... -
Computational 3D Optical Imaging Using Wavevector Diversity
(2021)The explosion in the popularity and success of deep learning in the past decade has accelerated the development of computationally efficient, GPU-accelerated frameworks, such as TensorFlow and PyTorch, for rapid prototyping ... -
Computational Optical Imaging Systems for Spectroscopy and Wide Field-of-View Gigapixel Photography
(2013)This dissertation explores computational optical imaging methods to circumvent the physical limitations of classical sensing. An ideal imaging system would maximize resolution in time, spectral bandwidth, three-dimensional ... -
Control of Surface Plasmon Substrates and Analysis of Near field Structure
(2011)The electromagnetic properties of various plasmonic nanostructures are investigated. These nanostructures, which include random clusters, controlled clusters and particle-film hybrids are applied to surface-enhanced Raman ... -
Design, Analysis, And Characterization Of Metamaterial Quasi-Optical Components For Millimeter-Wave Automotive Radar
(2013)Since their introduction by Mercedes Benz in the late 1990s, W-band radars operating at 76-77 GHz have found their way into more and more passenger cars. These automotive radars are typically used in adaptive cruise control, ... -
Design, Characterization, and Evaluation of a Surface Plasmon Resonance Sensor
(2012)Characterization of thin films, prominently including self-assembled monolayers is important to the understanding of interfacial events in both biological and manufactured systems. To facilitate such work, a surface plasmon ... -
Development of a Wide Field Diffuse Reflectance Spectral Imaging System for Breast Tumor Margin Assessment
(2012)Breast conserving surgery (BCS) is a common treatment option for breast cancer patients. The goal of BCS is to remove the entire tumor from the breast while preserving as much normal tissue as possible for a better cosmetic ... -
Development of Clinically Translatable Technologies for Optical Image-Guided Breast Tumor Removal Surgery
(2014)The rate of occurrence and number of deaths associated with cancer continues to climb each year despite the continual efforts to battle the disease. When given a cancer diagnosis, it is particularly demoralizing and devastating ... -
Development of Extended-Depth Swept Source Optical Coherence Tomography for Applications in Ophthalmic Imaging of the Anterior and Posterior Eye
(2012)Optical coherence tomography (OCT) is a non-invasive optical imaging modality that provides micron-scale resolution of tissue micro-structure over depth ranges of several millimeters. This imaging technique has had a profound ... -
Development of Multi-modal and Super-resolved Retinal Imaging Systems
(2016)Advancements in retinal imaging technologies have drastically improved the quality of eye care in the past couple decades. Scanning laser ophthalmoscopy (SLO) and optical coherence tomography (OCT) are two examples of critical ... -
Development of Optical Technologies for Comprehensive Screening of Cervical Epithelial Health
(2019)Cervical cancer is one of the most common gynecologic malignancies with significant morbidity and mortality globally. However, most pre-cancers are easily treatable such that early detection of cervical abnormalities is ... -
Development of Swept Source Optical Coherence Tomography and Adaptive Optics Scanning Laser Ophthalmoscopy: Improved Imaging Speed and Handheld Applications
(2016)Optical coherence tomography (OCT) is a noninvasive three-dimensional interferometric imaging technique capable of achieving micrometer scale resolution. It is now a standard of care in ophthalmology, where it is used to ...
