Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"optical properties of materials"”.
-
Ανάπτυξη συστημάτων παλμωτών lasers αερίων και χρήση τους στην μελέτη των οπτικών ιδιοτήτων του αδάμαντα
The double purpose of this thesis is the study and the improvement of the working characteristics of pulsed gas lasers, so that they can be used in the studies of the optical properties of materials and the study of the optical properties of materials themselves and especially those of diamond. …
-
Peculiar perovskites: Unraveling the unique optical response of hybrid organic-inorganic perovskites from first principles
Hybrid organic-inorganic perovskite (HOP) materials and their layered analogs (LHOP) have been extensively applied to optoelectronic applications including solar cells, light-emitting diodes, optical detectors, and spintronics due to their unique atomic, electronic, and optical properties. HOPs and …
-
Detection of Solar Neutrino Absorption and Study of TPB and Acrylic Fluorescence in DEAP-3600
… analyses that can use the high livetime of the ultra-low background LAr detector to expand the scientific output of the experiment. With recent hardware upgrades, there is also a motivation to improve the detector simulation model and the understanding of the detector by studying …
-
Multi-pulse nonlinear optical spectroscopy and light-matter interactions in layered materials.
… applications from solar energy conversion to optical sensing of biological materials. The use of multiple pulses to study these interactions are especially useful in understanding the nonlinear optical properties of materials. Transition metal dichalcogenides such as molybdenum disulfide …
-
Ultrasonic synthesis of materials for energy conversion devices
… is no doubt about the fact that the development of improved energy conversion and storage devices is the biggest issue in the 21st century. A variety of mobile electronics are on the market more than ever, and battery-powered electrical vehicles are no longer a dream. However, the energy …
-
Engineering the optical properties of subwavelength devices and materials
Many applications demand materials with seemingly incompatible optical characteristics. For example, immersion photolithography is a resolution enhancing technique used to fabricate the ever-shrinking nanostructures in integrated circuits but requires a material that has-at the same time--a large …
-
Response of periodic systems to electromagnetic fields: multipole expansion, microscopic charge-current density, polarization and magnetization
… fields are central concepts in the theory of light-matter interaction, because they describe the distribution of charges and currents induced in the material medium due to an application of electromagnetic fields. Here I develop strategies to treat polarization and magnetization fields in …
-
Accelerating Materials Discovery for Optical Applications using Machine Learning, Natural Language Processing and Density Functional Theory
… thesis presents a novel approach that combines materials informatics and theoretical calculations to accelerate the discovery of materials with desirable optical properties. Unlike traditional experimental research programmes, this work emphasises the significant contributions in terms of …
-
Modeling Dark- and Light-Induced Crystal Structures and Single-Crystal Optical Absorption Spectra of Ruthenium-Based Complexes that Undergo SO2-Linkage Photoisomerization
A family of coordination complexes of the type [Ru(SO2)(NH3)4X]Y exhibit optical-switching capabilities in their single-crystal state. This striking effect is caused by photoisomerization of metastable photoinduced states, which are metastable if kept at suitably low temperatures. This illustrates …
-
Photonic engineering of near- and far-field radiative heat transfer
… energy through the emission and absorption of electromagnetic waves. It is one of nature's key fundamental processes and is ubiquitous in all facets of daily life from the light we receive from the Sun to the heat we feel when we place our hands near a fire. Fundamentally, radiative heat …
-
Multi-Microscopy Characterisation of III-Nitride Devices and Materials
… as single photon sources are also the subject of research and are promising for various applications. In order to improve design efficient devices and improve current ones, the relationship between the structure of the constituent materials and their optical properties must be studied. The …
-
Creation of 3-dimensional micro-optical materials
Structure at or below the wavelength of light can greatly modify the optical properties of materials. Control over these aspects can introduce a variety of optical phenomena, such as photonic band gaps, negative refractive index, transformation optics, and sub-diffraction limit focusing, to name a …
-
Fiber Laser Based Nonlinear Spectroscopy
… laboratory settings. Over recent years, optical-fiber lasers that are highly reliable, simple to operate and relatively inexpensive have become commercially available, removing one of the major obstacles to widespread utilization of nonlinear optical measurement in biochemistry. However, …
-
Experiments on the Thermal, Electrical, and Plasmonic Properties of Nanostructured Materials
Nanofabrication techniques continue to advance and are rapidly becoming the primary route to enhancement for the electrical, thermal, and optical properties of materials. The work presented in this dissertation details fabrication and characterization techniques of thin films and nanoparticles for …