Essays about: "mbar"

Showing result 6 - 10 of 27 essays containing the word mbar.

  1. 6. Effects of Carbon Functionalization on Hydrogen Oxidation Underneath Graphene Flakes

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Johannes Stubbe; [2020]
    Keywords : Graphene; Functionanlization; in situ AP-XPS; water formation; time resolved; catalysts; kinetics; Physics and Astronomy;

    Abstract : Effects of carbon functionalization on the catalytic properties of the space underneath epitaxial graphene flakes on Ir(111) are investigated with Ambient Pressure X-ray Photoelectron Spectroscopy studies of oxygen hydrogenation. The 0. READ MORE

  3. 7. Temporal Characterization and Intensity Contrast Improvement of Few-cycle Laser Pulses

    University essay from Umeå universitet/Institutionen för fysik

    Author : Xiaoying Zhang; [2019]
    Keywords : ;

    Abstract : Due to the unique combination of properties of high intensity and few optical cycle pulse duration, the ultrashort laser pulses have widespread applications in pump-probe spectroscopy and laser-plasma interaction. Correspondingly, it is critical to precisely measure the electric field in the temporal or spectral domain. READ MORE

  4. 8. Observing phase changes in real time on ultrathin Iron oxide surfaces

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Harald Wallander; [2019]
    Keywords : CO oxidation; platinum; iron oxides; Physics and Astronomy;

    Abstract : Studying catalysts under such non-equilibrium conditions is a step towards approaching more realistic reaction conditions for working catalysts. Reactivity during phase changes of ultra-thin FeO2 films grown on Pt(111) are studied in situ with Ambient Pressure X-ray Photo Emission Spectroscopy and Quadrupole Mass Spectrometry, while running the CO oxidation reaction at 160°C and 0:6 mbar. READ MORE

  5. 9. Optimization of gas flow uniformity in enhancement of Metal Organic Chemical Vapor Deposition growth for III-nitrides

    University essay from Linköpings universitet/Halvledarmaterial

    Author : Kevin Olsson; [2019]
    Keywords : material science; mocvd; gan; semiconductors; gallium; nitride; fluid dynamics; termoelements; thermocouple; injector; heat transfer; thermal distribution; graphite; HEMT; III-nitrides; hot-wall MOCVD system; GaN-on-SiC; gas flow profile; laminar flow;

    Abstract : The thesis focuses on the gas flow profile optimization of a non-conventional injector in a hot-wall MOCVD system. The injector’s gas flow profile is simulated with CFD and demonstrates awell-behaved laminar flow with a parabolic profile. READ MORE

  6. 10. A computational study on indium nitride ALD precursors and surface chemical mechanism

    University essay from Linköpings universitet/Kemi

    Author : Karl Rönnby; [2018]
    Keywords : Computational Chemistry; Chemical Vapour Deposition; Atomic Layer Deposition; Indium nitride; gas phase decomposition; surface mechanism;

    Abstract : Indium nitride has many applications as a semiconductor. High quality films of indium nitride can be grown using Chemical Vapour Deposition (CVD) and Atomic Layer Deposition (ALD), but the availability of precursors and knowledge of the underlaying chemical reactions is limited. READ MORE