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Showing 1 to 20 of 22 for “"thermal desorption spectroscopy"”.

  1. Angle-Resolved Thermal Desorption Spectroscopy as a Surface Probe

    Horton, Dorothy RoyUniversity of Illinois at Urbana-Champaign2014

    … fifteen years it has become apparent that the desorption process is not as well understood as it appeared when Knudsen formulated his cosine law of desorption in the early 1900's. Directed desorption, where the flux is focused along the surface normal, has been observed in several systems, …

    uiuc Repository record

  2. Thermal Desorption Spectroscopy Measurements of Hydrogen Retention in Flowing Liquid Lithium

    Olczak, Wieslaw W.2017

    Made available in DSpace on 2017-07-06T18:55:42Z (GMT). No. of bitstreams: 3 Olczak_Wieslaw_W_MS.pdf: 1180395 bytes, checksum: 7d82ac8bfb0643dbe1d1b55c59fa21b5 (MD5) Olczak_Wieslaw_W_MS_ABS.pdf: 40741 bytes, checksum: 152e9b0d550225e9814fc7adb7710818 (MD5) license.txt: 4813 bytes, checksum: …

    uiuc Repository record

  3. The adsorption of sulfur and halogen containing materials on nickel studied by X-ray photoelectron spectroscopy and thermal desorption spectroscopy

    Battrell, Charles FrederickVirginia Polytechnic Institute and State University1976

    … an X-ray photoelectron spectrometer (XPS) and a thermal desorption system with mass spectrometric analysis (TD). The ion implantation of the methyl halide series on nickel was investigated by XPS. The nickel surface was cleaned by high temperature heating in vacuum or argon ion sputtering. An …

    vt Repository record

  4. Surface decomposition studies of trimethylgallium on silicon(100)

    Lee, FourmunUniversity of Illinois at Urbana-Champaign2011

    … (TMG) on silicon (100) was investigated using thermal desorption spectroscopy (TDS), x-ray photoelectron spectroscopy (XPS), infrared spectroscopy (IR), and electron energy loss spectroscopy (EELS).

    uiuc Repository record

  5. Heterogeneous decomposition of trimethylaluminum and trimethylgallium on silicon surfaces

    Gow, Thomas Richard, JrUniversity of Illinois at Urbana-Champaign2011

    … for use in MOCVD and MOMBE. This study uses thermal desorption spectroscopy, x-ray photoelectron spectroscopy, and electron energy loss spectroscopy to examine the decomposition of TMAl at low coverages on heated silicon substrates. In addition, molecular beam methods are employed to …

    uiuc Repository record

  6. The Oxidation of Methanol on Cr₂O₃ (101̅2) Single Crystal Surfaces

    Mensch, Michael W.Virginia Tech2003

    … surfaces of Cr₂O₃ (101̅2) was studied using thermal desorption spectroscopy and x-ray photoelectron spectroscopy. Dissociative adsorption of methanol occurs on the nearly-stoichiometric surface and is attributed to the presence of cation/anion site-pairs. An array of products including CH₄, …

    vt Repository record

  7. Characterization and Reactivity of Mo₂C

    St. Clair, Todd P.Virginia Tech1998

    … x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), CO chemisorption, and N₂ physisorption. The catalytic activity of the β-Mo₂C was tested for cumene hydrogenation under high pressure conditions, and the effect of sulfur and oxygen poisons on cumene hydrogenation was also …

    vt Repository record

  8. Adsorption of water and carbon monoxide on Cu₂O(111) single crystal surfaces

    Christiaen, Anne-ClaireVirginia Tech1994

    … the oxygen-deficient Cu₂O(111) surfaces, using thermal desorption spectroscopy (TDS), ultraviolet photoelectron spectroscopy (UPS), and X-ray photoelectron spectroscopy (XPS). Water is the only desorbing species detected in TDS and the extent of dissociation is unaffected by the surface …

    vt Repository record

  9. Estudo da difusão de hidrogênio em uma liga de alta entropia (CoCrFeNiMn) equimolar e nanocristalina

    Belo, Jardel de SouzaUniversidade Federal do Rio de Janeiro2017

    … slow diffusion, stabilizing the microstructure thermally. The aim of the present project consists in evaluating the microstructural, mechanical properties and interaction and hydrogen’s diffusion with a polycrystalline and nanocrystalline HEA. The CoCrFeMnNi alloy was melt in an arc melt …

    brazil-uerj Repository record

  10. Ligas à base de ferro-titânio para aplicações de armazenamento de hidrogênio

    Batista, Meigga Juliane Soares MelloUniversidade Federal do Rio de Janeiro2018

    … Microscopy (SEM), X-ray Dispersive Energy Spectroscopy (EDS), Absorption and Desorption Kinetics Curves and Thermal Desorption Spectroscopy (TDS) were used for characterization. The samples with V were naturally cooled and exhibited H2 absorption capacity of between 0.9 and 1.9 wt%. …

    brazil-uerj Repository record

  11. Reactions of Halogenated Ethylenes on the α-Cr₂O₃ (101̅2) Surface

    Minton, Mary AmandaVirginia Tech2006

    The thermally induced reaction of halogenated ethylenes on the α-Cr₂O₃ (101̅2) single crystal surface results in the formation of gas phase hydrocarbons including acetylene, ethylene, butadiene, and dihydrogen, and deposition of surface chlorine adatoms. No surface carbon or combustion products are …

    vt Repository record

  12. Development of Chemomechanical Functionalization and Nanografting on Silicon Surfaces

    Lee, Michael Vernon2007

    … possible for chemomechanical functionalization. Thermal desorption spectroscopy was performed on chemomechanically functionalized samples and demonstrated the similarity in binding of molecules to the scribed silicon surface and to the common Si(001)-2x1 and Si(111)-7x7 surfaces. The wearing of …

    byu Repository record

  13. Scanning Tunneling Microscopy and Adsorption Studies on Single-Crystal Metal Oxide Surfaces

    Conway, Timothy JamesVirginia Tech1997

    … the stoichiometric Cr₂O₃ (101̲2) surface, using thermal desorption spectroscopy (TDS). Water was the only desorption product observed during TDS. Adsorption is primarily dissociative following exposure to water at 163 K. Approximately, 0.12 monolayers of water dissociate on the clean, nearly …

    vt Repository record

  14. Reaction chemistry of C₁ hydrocarbon fragments and oxygenates on Cr₂O₃ (101̅2)

    Byrd, Chad MichaelVirginia Tech2003

    … Cl-terminated α-Cr₂O₃ surfaces, were studied by thermal desorption spectroscopy. Adsorbed formaldehyde forms dioxymethylene species on the nearly-stoichiometric surface that react primarily above 600 K. Dioxymethylene decomposes via a Cannizzaro-type process with dehydrogenation to formate, and …

    vt Repository record

  15. Process Evaluation and Characterization of Tungsten Nitride as a Diffusion Barrier for Copper Interconnect Technology

    Ekstrom, Bradley MitsuharuUniversity of North Texas2005

    … 3:1 aspect ratio) was > 44 %. Secondary ion mass spectroscopy (SIMS) measurements showed good barrier performance for W2N between Cu and SiO2 with no intermixing of the Cu and silicon when annealed to 390o C for 3 hours. Cu nucleation behavior and thermal stability on clean and nitrided tungsten …

    unt Repository record

  16. The Interaction of Nitric Oxide and Carbon Monoxide With Platinum

    Banholzer, William FrankUniversity of Illinois at Urbana-Champaign2014

    … This prediction is experimentally tested using thermal desorption spectroscopy and reflection absorption infared spectroscopy on one such surface, platinum (410). A new system was constructed for the infared work which was capable of measuring 2 nanograms of carbon monoxide at a resolution of …

    uiuc Repository record

  17. Deuterium Retention and Trapping in Polycrystalline Tungsten under Simultaneous Implantation of Deuterium with Helium and with Neon

    Finlay, Tamara Jean2018

    … concentration depth profiles were measured using thermal desorption spectroscopy (TDS), nuclear reaction analysis (NRA), and elastic recoil detection analysis (ERDA). No significant difference was found in D retention between PCW and RCW under D-only or SIM D-He irradiation at all temperatures. …

    toronto-retro Repository record

  18. Hybrid Illinois Device for Research and Applications material analysis test-stand development for characterization of fusion plasma-material interactions

    Shone, Andrew JohnUniversity of Illinois at Urbana-Champaign2021

    … diagnostics capable of laser-induced breakdown spectroscopy (LIBS), laser-induced desorption spectroscopy (LIDS), thermal desorption spectroscopy (TDS), and He/D2 differentiation. Preliminary experimental data demonstrating the functionality of sample motion and rotation, the LMDI, and surface …

    uiuc Repository record

  19. Study of temperature dependence of hydrogen retention in lithium coatings on stainless steel with the Materials Analysis Particle Probe (MAPP)

    Bedoya Arroyave, Carlos FelipeUniversity of Illinois at Urbana-Champaign2016

    … MAPP is equipped to perform X ray Photoelectron Spectroscopy (XPS), Ion Scattering Spectroscopy (ISS), Direct Recoil Spectroscopy (DRS) and Thermal Desorption Spectroscopy (TDS). The hardware used to execute these tech- niques is controlled via a set of LabView® virtual instruments (VIs). …

    uiuc Repository record

  20. Dynamics of hydrogen and low concentration carbon on Au-Ni(111) surface alloys

    Liu, Qing, Ph. D. Massachusetts Institute of TechnologyMassachusetts Institute of Technology2018

    … of threefold hollow sites, as identified via thermal desorption spectroscopy (TDS), collision induced recombinative desorption (CIRD), and high resolution electron energy loss spectroscopy (HREELS). Hydrogen atoms bind relatively strongly to threefold hollow sites consisting only of Ni atoms, …

    mit Repository record

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