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 51 for “"Attenuated total reflection"”.
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Analysis of urinary calculi by attenuated total reflection with atlas
… routine analytical technique by using attenuated total reflectance, and (2) to serve as an atlas for identification of renal calculi.
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Analysis of rocks and minerals by attenuated total reflection with atlas
… by the application of the technique of attenuated total reflection [ATR] in infrared [IR] spectrophotometry.</p><p>An atlas of spectra would serve the analytical chemist and geologist, who in turn would serve the miner, the lapidarist, and other groups interested in rocks and …
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Optical diagnostics of lithium-sulfur and lithium-ion battery electrolytes using attenuated total reflection infrared spectroscopy
Operando investigations of batteries allow direct monitoring of intrinsic chemical and physical processes governing performance. FTIR spectroscopy is a powerful technique for real time species identification and quantification. ATR FTIR allows investigations of battery electrolytes in realistic …
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Application of attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy to measure sub-lethal effects of potential mutagens
… the tissues of sentinels. IR techniques such as attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, was able to detect changes in various tissue samples exposed to varying levels of polycyclic aromatic hydrocarbons (PAHs). This technique discriminated between spatial …
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Structure and dynamics of adsorbed polymer
… transform infrared spectroscopy in the mode of attenuated total reflection. The polymers were amorphous, linear and flexible.
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In Situ Studies of Promoted Catalytic Surfaces and Redox Active Mineral Surfaces
In this dissertation the in situ technique, attenuated total reflection-Fourier transform infrared spectroscopy, will be utilized to probe reaction chemistry on two sets of surfaces; the first, a silicon-copper alloy surface where copper acts as a catalyst in the synthesis of methylchlorosilanes, …
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Dynamic aspects of adsorbed polymer layers: Evidence of glass-like transitions
… transform infrared spectroscopy in the mode of attenuated total reflection. The general experimental approach involved surrounding an initially adsorbed polymer layer with a solution of macromolecules having a greater affinity for the surface (either silicon oxide or germanium oxide). The …
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The application of planar optical waveguides to absorption spectrometry in flow injection analysis
Attenuated total reflection techniques have been used extensively as analytical tools for the analysis of thin films and analytes imbedded in complex scattering matrices. However they have not been commonly utilized as detectors in common analytical techniques such as Flow Injection Analysis …
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Developing Time-Resolved Synchrotron Infrared Spectroscopy for Spectroelectrochemical Measurements
… processes with rapid scan FTIR in reflection mode. The thesis demonstrates application of SIR-based rapid scan FTIR to spatially map catalytic activity on heterogenous PtNi electrode and provides proof-of-principle for its capability for combinatorial screening for binary …
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Propagation, Scattering and Amplification of Surface Plasmons in Thin Silver Films
… for the first time. For this a novel twin-attenuated-total-reflection scheme is introduced. The experiment is described by a theoretical model which exhibits very good agreement. Together they provide clear evidence of the claimed process.
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Novel infrared spectroscopic techniques for the study of adsorbed proteins on photoactive thin films
Through the development of attenuated total reflection (ATR) Fourier transform infrared (FTIR) spectroscopic techniques, as well as biocompatible nanoporous gold film confining layers and photoactive nanocrystal cadmium telluride (CdTe) thin films, a system capable of in situ study of adsorbed …
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Monitoring brain neurochemistry after brain trauma
… advanced mid-infrared spectroscopic sensors and attenuated total reflection (ATR) fibre optic probes for real-time monitoring of cerebral metabolites in traumatic brain injury (TBI) patients. Through a series of in-vitro and in-vivo studies, this research addresses the critical need for enhanced …
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The use of cyclodextrin template-based metal oxide nanomaterials in the development of electrochemical sensors for phenolic endocrine disruptor compounds
… energy dispersive X-ray spectroscopy (EDX), attenuated total reflection Fourier transform infrared (ATR-FTIR), X-ray diffraction (XRD), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA). The TEM shows that the surface morphology has no difference …
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Fundamental aspects of the chrome tanning reaction
… collagen triple helices, but without disruption. Attenuated total reflection Fourier transform infrared spectroscopy analysis provided information regarding changes in the secondary structure of collagen during tanning. Complete breakdown of chrome tanned collagen was achieved by the use of a …
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Increased Utility of pH Sensitive Indicators as High Concentration CO2 Detectors Through the Use of Polyelectrolyte Complexes as Stabilizing Media
… analysis of the ICPEC was performed via attenuated total reflection infrared spectroscopy (ATR-FTIR) and simultaneous thermal analysis (STA). It was shown that ICPECs are very dependent on both internal ionic concentration and moisture content and that these factors can significantly …
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Partial discharge ageing of polymer insulation under combined AC and DC stress at elevated temperatures
… (PRPD) plots, Fourier Transform Infrared - Attenuated Total Reflection (FTIR-ATR) Spectroscopy and Dielectric Spectroscopy (DS) measurements were carried out. The performance of HDPE and PP were compared.
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Investigating the effects of organic pollutants on amphibian populations in the UK
… induced by chemicals in cells and tissues. Here, attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy in conjunction with multivariate analysis was implemented in order to distinguish between embryos, whole tadpoles at an early stage of development and individual tissues …
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The inclusivity of ice.
… solutions with vibrational spectroscopy, namely attenuated total reflection spectroscopy. Additionally, interfacial interactions for tetrahydrofuran gas hydrates and aqueous tetrahydrofuran solutions were analyzed using the surface-specific spectroscopic technique, vibrational sum-frequency …
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