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.
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Showing 1 to 20 of 30 for “"IR imaging"”.
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Mid-IR Imaging and Multivariate Analysis of Dynamic Processes in Pharmaceutically Relevant Microparticles
… must be well characterized in terms of their size range, morphology and function. It is widely understood that the chemistry and morphology of microparticles have a degree of interdependence which strongly affects drug release behaviour from microparticles. This thesis investigates, for the …
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Combustion Studies of Laminate Propellants of AP and HTPB With UV/IR Imaging and Spectroscopic Diagnostics
A non-intrusive diagnostic technique of imaging spectroscopy has been developed and used to study vibrational-rotational transitions of HCl in order to measure associated temperatures at different locations in the gas phase and to test for thermal equilibrium. Experimental spectra have been …
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Design of a Readout Integrated Circuit (ROIC) for Infrared Imaging Applications
… has been a growing interest in using Infrared (IR) imaging systems in various applications ranging from medical diagnosis to military surveillance. The quality of the IR imaging systems depends on 1) the sensitivity of the Focal Plane Arrays (FPA) as the transducer of the electromagnetic wave …
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Computational methods for cancer diagnosis and prognosis from FT-IR spectroscopy data
… Outcome prediction by clinical, pathologic, imaging and computational tools outperforms manual ad hoc decisions, but the deficiencies in these tools are apparent and hamper effective and efficient treatment plans. Here, we sought to develop automated tools for cancer pathology using fourier …
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Mid infrared spectroscopic imaging and tomography
Fourier Transform Infrared (FT-IR) Spectroscopic Imaging is an optical technique that simultaneously provides morphological (two dimensional) and mid-infrared spectral (one dimensional) information for a specimen under observation. In this dissertation, we develop a new instrument that extends the …
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Characterization of molecular dynamic changes in tissue model systems using Fourier transform infrared spectroscopic imaging
… and animal tissue models using the emerging FT-IR imaging technology combined with conventional biological and histological tools. These models are then examined for their chemical and biochemical stability, and used to monitor tumor-associated changes in stroma and cellular responses and …
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Leveraging Spectra to Improve the Resolution and Usability of Mid-Infrared Biomedical Microscopy: A Case Study in Bone Marrow Grading
Histological imaging is the current gold standard for disease diagnosis and prognosis. The current histological methods rely on techniques, such as chemical staining and pathological analysis, that are non-quantitative, subjective, and limited to specific biomarkers. Over the past decade, research …
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Develop Sonic Infrared Imaging Nde For Local Damage Assessment In Civil Structures
… of materials, tissues and structures. Ultrasonic IR Imaging is a novel NDE technique, which combines a short ultrasonic pulse excitation and infrared imaging to detect defects in materials and structures. In this technique, a sound pulse with a frequency in the range of 20-40kHz is infused on a …
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Roles of surface interaction on Cryptosporidium parvum oocyst transport in subsurface environment
… with 0, 10, 20, 50 and, 100% Fe2O3 patches were firstly fabricated in micromodels. Real time transport of oocyst in RSPF cell and micromodel in electrolyte solutions with systematically varied composition was monitored. Surface polarity and chemical heterogeneity of oocysts surface were …
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Infrared imaging - case studies and applications
… in the use and applications of infrared (IR) imaging. Compared with traditional imaging in visible light, infrared imaging has abilities to convey significant additional information. Applications in medicine require wavelengths in the range of 0.8 to 25 microns while metrology and …
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Structural characterization of polyurethane foam and implications of aging
… using photoacoustic infrared spectroscopy, IR imaging, and thermal analysis. The change in modulus was related to thermal decomposition of uretoneimine linkages in the diisocyanate starting material by monitoring the change in intensities of diisocyanate, carbodiimide, and uretoneimine bands …
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Mems approaches in infrared imaging
… bridge. The thermal flux, due to the incident IR photons, is determined by the Extended Blackbody Calculator (BBC). These materials are physically interfaced with different types of piezoelectric resonators, constructed using the MEMS process. The expansion due to heating, applies stress to the …
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Fundamental Properties of Galaxy Clusters: A Prelude to Large Scale Sunyaev-Zel'dovich Effect/near-Ir Cluster Surveys
… dissertation is a systematic survey of the near-IR properties of cluster galaxies. With a large nearby cluster sample that spans a wide range in mass, we study scaling relations between the total galaxy luminosity or number and the cluster binding mass. The origins of such correlations are …
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Investigation of thermal electric cooler-less microbolometer infrared imaging
The current IR imaging modules developed by BAE SYSTEMS North America use a Thermal Electric Cooler (TEC) to stabilize the Focal Plane Array (FPA). An FPA is an array of microbolometers which are small vanadium oxide elements whose resistances are very sensitive to IR radiation. The ability to run …
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Two-photon absorption in bulk semiconductors and quantum well structures and its applications
… applications of two-photon absorption (2PA), in direct-gap semiconductors and quantum-well (QW) semiconductor structures. One application uses extremely nondegenerate (END) 2PA, for mid-infrared (mid-IR) detection in uncooled semiconductors. The use of END, where the two photons have very …
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Systems pathology: a bottom-up approach for understanding fibroblast-epithelial interactions in breast cancer
… in tumor biopsies using an emerging chemical imaging technology. It has been described extensively that the tumor microenvironment, or stroma, can promote or suppress cancer phenotypes in many tissues. We hypothesized that interaction with fibroblasts, the predominant cell type found in the …
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Study Of Chaotic Ultrasound And Frequency Sweep Excitations In Sonic Ir Nde Technology
<p>Sonic Infrared (IR) Imaging Nondestructive Evaluation (NDE) technology has shown inherent advantages, such as fast detection for all direction and all dimension flaws, for both metal and composite materials. The purpose of this dissertation is to study and investigate the physical process of two …
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Open-IRIS: Low Cost, Fully Open Source In-situ Infrared Inspection of Silicon
Short-Wave Infrared (SWIR) imaging has become a powerful and well-known technique over the last two decades for silicon inspection and imaging. Open-IRIS is a low-cost, fully open-source system for in-situ InfraRed Inspection of Silicon devices (IRIS). It is designed to lower the cost barrier for …
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Investigation into the relationship between blunt impacts and bruising
… suspect cases of assault or abuse, however their interpretation is purely visual. Although the biology of bruising is known, how a blunt impact initiates bruising and influences its severity is not understood. Furthermore, the standard method of documenting bruising with colour photography is …
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Development of native and contrast enhanced magnetic resonance imaging for the characterization of cardiovascular disease
Late gadolinium enhancement (LGEJ imaging is a widely used cardiovascular MRI technique. My work focused on developing new LGE MRI sequences to; identify plaque in the aortic vessel wall, to visualize areas of ventricular scar after myocardial infarction and pulmonary vein and atrial wall lesions …
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