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 20 of 312 for “"X ray photoelectron spectroscopy (XPS)"”.
-
X-ray photoelectron spectroscopy (XPS) study of single crystal UO2 and U3O8 on r-plane sapphire and yttrium stabilized zirconium (YSZ) substrates
… To do this we analyzed our thin films using X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), Rutherford Backscattering Spectroscopy (RBS), and Secondary Ion Mass Spectroscopy (SIMS). This thesis will primarily focus on the growth of the thin films, and the analyzed results from …
-
Surface decomposition studies of trimethylgallium on silicon(100)
… (100) was investigated using thermal desorption spectroscopy (TDS), x-ray photoelectron spectroscopy (XPS), infrared spectroscopy (IR), and electron energy loss spectroscopy (EELS).
-
The role of complexing agents in the flotation of pentlandite-pyroxene mixtures
… of flight secondary ion mass spectrometry) and X-ray photoelectron spectroscopy (XPS) were used as tools in determining the extent of surface alteration.
-
Development of Ti-Si-N and Ta-Si-N as diffusion barriers
… studied using sheet resistance measurements, X-ray diffractometry (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), auger electron spectroscopy (AES) and annealing in a controlled ambient atmosphere"--Abstract, page iv.
-
Nanoscale Hydrogel Films and Polymer Brushes Grafted Onto Nanocapillary Array Membranes for Externally Controllable Size -Selective Molecular Transport
… mode Fourier-transformed infra-red (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), while SPR measurements were used to characterize both the synthesis of the hydrogel, as well as to characterize potential-induced volume changes on planar Au surfaces. Scanning electron …
-
An investigation of the temperature distribution induced during laser chemical vapor deposition (LCVD) of titanium nitride on titanium-aluminum-vanadium
… Electron Microscopy (SEM), Auger Electron Spectroscopy (AES), and X-ray Photoelectron Spectroscopy (XPS).
-
Surface analysis of a black coating from Little Lost River
… in Little Lost River Cave, Idaho. We utilized x-ray photoelectron spectroscopy (XPS) to characterize the outermost surface of the black coating to understand how it was formed. Carbon and oxygen predominated in the XP spectra, whereas nitrogen was detected at varying levels in different samples. …
-
Reactions of thin film bilayers of nickel on silicon-germanium alloys
… volume of the film structure. In-situ X-ray Photoelectron Spectroscopy (XPS) is also done during vacuum annealing of the bilayer structure, and yields information about phase changes that occur at the surface of the sample. The combination of cross-sectional Transmission Electron …
-
Surface analysis of sheet molded composite (SMC) material as related to adhesion
… and their chemical states, were studied using x-ray photoelectron spectroscopy (XPS) before and after a series of surface treatments as well as after mechanical lap shear fracture tests for SMCs bonded with urethane adhesive. Surface chemical functionalities, including -C-0·R(X)/-NCOZR and -C=0 …
-
Characterizing the chemistry of yellow-poplar surfaces exposed to different surface energy environments using DCA, DSC, and XPS
… using dynamic contact angle (DCA) and X-ray photoelectron spectroscopy (XPS) analysis. Results show that the surface molecular orientation of yellow-poplar can be controlled by increasing the temperature above the Tg of lignin with exposure to either an environment of higher (aluminum) or …
-
The Functionalization of Magnetic Fe3O4@TiO2 by Molecular Motif for the Detection of Mercury (II)
… using thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). Detailed emission studies showed the ability of the L and L-Fe3O4@TiO2 not only effectively detect Hg2+ but differentiate it from competing Zn2+, Cd2+,Cu2+,Cr3+,Co2+,Ru3+, Fe2+ ions in solution with minimum …
-
Electrodeposition of Diamond-like Carbon Films
… by scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), fourier transform infrared spectroscopy (FTIR) and cyclic voltammetry (CV). A variety of experimental parameters were shown to affect the deposition process. The second electrochemical method was …
-
Power Electronics Based on Ultrawide Bandgap Semiconductors: from Material Engineering to Device Applications
… confirmed by a series of techniques, including X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and high-resolution transmission electron microscopy (HRTEM). The MIS SBDs show an on/off ratio of ~ 107 and an increased on-resistance due to the insertion of the BN layer. An increased …
-
Exploration of the Structure and Catalytic Activity of Modified Platinum Substrates
… Scanning Tunneling Microscopy (STM), X-Ray Photoelectron Spectroscopy (XPS) and electrochemical methods are ideal techniques to probe the structure and catalytic activity of platinum surfaces modified by noble metal adatoms. STM and XPS studies correlate surface coverage and composition …
-
A Study of Amorphous Hydrogenated Titanium-Carbide Films: Structure, Stability, and Role of Hydrogen Doping
… compound tetraneopentyl-titanium. X-ray and electron diffraction studies confirmed the amorphicity of the coatings, while controlled-heating experiments emphasized their stability against crystallization to higher temperatures ((TURN)1100(DEGREES)C) than typical glassy metals. …
-
The catalytic activity of anodic oxides on aluminum
… on the catalytic activity was examined. IR spectroscopy proved useful for the study of the effect of thermal treatment on the acidity of the oxides. X-ray photoelectron spectroscopy (XPS) was employed to examine the oxide surfaces both before and after use as a catalyst. The acidity of the …
-
Catalytic Hydrodeoxygenation of Bio-Oil Model Compounds (Ethanol, 2-Methyltetrahydrofuran) over Supported Transition Metal Phosphides
… Ni2P/SiO2. Characterization techniques such as X-ray diffraction (XRD), temperature-programmed reduction and desorption (TPR and TPD), X-ray photoelectron spectroscopy (XPS), and chemisorption were used. In situ Fourier transform infrared (FTIR) spectroscopy was employed to monitor the surface of …
-
The investigation of acid/base interactions in the adhesion of carbon fibers to thermoplastic matrices
… matrices. Inverse gas chromatography (IGC) and x-ray photoelectron spectroscopy (XPS) were used to characterize the acid/base nature of the carbon fiber surfaces. Capillary column IGC (CIGC) was used to determine the acid/base nature of thermoplastic polymer surfaces. To quantify the …
-
Reactive Sputter Deposition of Lithium Phosphorus Oxynitride Thin Films, A Li Battery Solid State Electrolyte
… differences, including examination by x-ray photoelectron spectroscopy (XPS), inductively coupled plasma optical emission spectroscopy (ICP/OES), and spectroscopic ellipsometry. In addition, film density, and the intrinsic stress of the deposited films were also studied. The highest ionic …
-
Characterization of Uranium Carbide Microspheres In An Inert Zirconium Carbide Matrix For Gas Fast Reactors
… for quantitative analysis (EPMA), and x-ray photoelectron spectroscopy (XPS). X-ray diffraction (XRD) was also used to find the crystal structure of the microspheres. The UC microspheres were further investigated by annealing. The annealing process was completed using a CM Furnace in an …
Page 1 of 16