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 39 for “"Spectroscopy Raman"”.
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Chemical vapor deposition of organosilicon and sacrificial polymer thin films
… tools including Fourier transform infrared spectroscopy, variable angle spectroscopic ellipsometry, X-ray photoelectron spectroscopy, Raman spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy were utilized to characterize film structure and understand the relationship between the …
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Development of novel photocatalysts for solar hydrogen production
… material was characterised using XRD, SEM, IR spectroscopy, Raman spectroscopy and magnetic susceptibility measurements. Materials annealed above 600 °C were found to consist mainly of FeVO4, although traces of hematite were found. Diffuse-reflectance UV spectroscopy and subsequent Tauc plots …
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La piel de la arquitectura de tierra. Sustancias naturales al servicio de la restauración de superficies del patrimonio vernáculo edificado
… by scientific methods, such as the Infrared Spectroscopy, Raman, FTIR, Scanning Electron Microscopy (SEM), X-ray Diffraction and the Stereoscopic and Optic Microscopy. The results obtained have allowed, in one hand, the determination of the consolidant capacity of the Euphorbia concerning the …
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Development and Application of in Situ/Operando Spectroscopic Techniques for Understanding Active Sites and Surface Intermediate Species in Heterogeneous Catalysis
… innovative methods, including in situ transient Raman spectroscopy, Differential Derivative Reflectance (DDR) UV-Vis Spectroscopy, Modulation Excitation Spectroscopy with Phase-Sensitive Detection (ME-PSD), and isotope modulation techniques, to investigate catalytic systems for propylene …
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Growth of Semiconductor Thin Films by Pulsed Laser Deposition
… electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, Raman spectroscopy and ellipsometry were used to analyze the structures and properties of ZnO and SnO2 thin films. The critical temperature required to fabricate a crystalline ZnO thin film by pulsed …
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Effect of Pt Particle Size and Electronic Properties on the Hydrogenation of Ethylene
… acterization techniques such as in situ infrared spectroscopy, Raman spectroscopy, and in situ X-ray absorption spectroscopy with kinetic measurements to correlate metal nuclearity and electronic properties with catalytic activity. The results reveal a volcano-shaped curve between the catalytic …
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FORENSIC PHARMACEUTICAL ANALYSIS OF COUNTERFEIT MEDICINES
… Reflection-Fourier Transform Infrared (ATR-FTIR) spectroscopy, Raman spectroscopy and two probe Mass Spectrometry (MS) methods were assessed for the rapid screening of tablet dosage forms. These systems were chosen because NO solvent extraction of the sample was required. Comparison with analyses …
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The study of a drug coating applied using a cold atmospheric plasma: everolimus coating properties
… analysis, Fourier-transform infrared (FTIR) spectroscopy, Raman spectroscopy, deep ultraviolet (DUV) mapping, and atomic force microscopy (AFM). A reverse-phase high performance liquid chromatography- ultra violet (HPLC/UV) method was developed to quantify the drug deposition and analyse the …
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Effects of Polymers on Carbamazepine cocrystals phase transformation and release profiles
… (DSC), X-Ray Powder Diffraction (XRPD), Raman spectroscopy (Raman) and Scanning Electron Microscopy (SEM). JMP 11 software was used to design the formulation. It has been found that Hydroxupropyl methylcellulose (HPMC) cannot inhibit the transformation of CBZ-NIC cocrystals to …
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Synthesis and characterisation of hybrid Zn0-carbon nanostructures for potential applications in hydrogen storage
… were determined using energy dispersive x-rays spectroscopy (EDS). From EDS results, it was discovered that the content of carbon on ZnO-CNFs annealed at 500 °C to 700 °C increases but decrease for the sample annealed at 800 °C. Crystal structure was studied using X-rays diffraction (XRD). XRD …
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The characterisation of alginate systems for biomedical applications
… techniques such as Fourier transform infrared spectroscopy, Raman spectroscopy and neutron spectroscopy, thermogravimetric analysis, microprobe analysis, X-ray diffraction and atomic absorption spectroscopy. It was found that sodium ions were bound to the carboxyl groups of the alginate …
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Niobium-mediated synthesis of phosphorus-rich molecules
… by gas-phase electron diffraction, photoelectron spectroscopy, solid-state NMR spectroscopy, raman spectroscopy, as well as high resolution mass spectrometry, and a variety of quantum chemical calculations. Further, a wide array of AsP3 reaction chemistry has been probed including the synthesis …
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On the fundamental mechanisms & optimisation of ultrasonic assisted liquid phase exfoliation of two dimensional nanomaterials
… a series of techniques consisting of UV-Vis spectroscopy, Raman spectroscopy and transmission electron microscopy (TEM). A mixture of deionised water and ethanol was shown to produce high quality graphene with a stability of ~ 78 % for the duration of six months. Further optimization of our …
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Diagnostic Neuropathology of Brain Tumours using Biophotonics and Spectrometry
… histopathology. One study looked at vibrational spectroscopy, Raman and attenuated total reflection-fourier transform infrared (ATR-FTIR) looking at brain tumour cell lines. This study investigated the potential application of vibrational spectroscopy in the segregation of different types of …
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Advanced Raman spectroscopy for bioprocess monitoring
The Raman -effect was discovered almost 90 years ago. It took a long time until the importance of Raman spectroscopy was fully understood and accepted for process industrial applications. Still today the usage is limited to a small application area. During the last decades advances in the …
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Synthesis and characterisation of molecular nanostructures
… techniques, including optical absorption spectroscopy, Raman spectroscopy, high-resolution electron energy-loss spectroscopy, the average response of the whole sample is obtained. On the other hand, on a local scale transmission and scanning electron microscopy as well as TEM-electron …
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Geochemical studies of earth materials
… re-equilibrated inclusions was confirmed by both Raman microprobe and quadrupole mass spectrometric analyses of the inclusions. Repeated heating of re-equilibrated inclusions to measure the dissolution temperature of chalcopyrite (Tm Cpy) results in a considerably higher Tm Cpy during each …
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CHARACTERIZATION OF WATER MEDIATED HYDROPHOBIC AND IONIC INTERACTIONS USING RAMAN SPECTROSCOPY
Raman spectroscopy can be combined with multivariate curve resolution (MCR),
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