Sökning: "Hafnium oxide"

Visar resultat 11 - 12 av 12 avhandlingar innehållade orden Hafnium oxide.

  1. 11. Atomic Layer Deposition and Immobilised Molecular Catalysts Studied by In and Ex Situ Electron Spectroscopy

    Författare :Payam Shayesteh; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ambient pressure XPS; Catalysis; Heterogenisation; Atomic layer deposition; HfO2; Gas phase; TDMAHf; TDMAT; Fysicumarkivet A:2019:Shayesteh;

    Sammanfattning : The research work that I describe in my thesis deals with three different heterogenisation approaches for synthesising a heterogeneous transition metal catalyst used for direct C-H activation reactions. The three heterogenisation approaches considered in my research are: (1) heterogenisation of a molecular catalyst on a polymer support using covalent bonds, (2) heterogenisation of a catalyst on a reduced graphene oxide (rGO) support using non-covalent interactions and (3) immobilisation of a catalyst on an inorganic surface using covalent bonds and encapsulation in an inorganic matrix. LÄS MER

  3. 12. High-Temperature Microfluidics for Space Propulsion

    Författare :Ville Lekholm; Klas Hjort; Anders Persson; Lena Klintberg; Herbert Shea; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

    Sammanfattning : In this thesis, microfabrication methods and tools for analysis of heated cold-gas microthrusters are presented, with the aim of improving their reliability and performance. Cold-gas thrusters operate by accelerating pressurized gas through a nozzle. LÄS MER