Sökning: "Dissociation"

Visar resultat 16 - 20 av 452 avhandlingar innehållade ordet Dissociation.

  1. 16. Ultrafast Probing of CO Reactions on Metal Surfaces : Changes in the molecular orbitals during the catalysis process

    Författare :Jörgen Gladh; Henrik Öström; Nils Mårtensson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hetrogenous catalysis; CO; transition metals; Ultrafast probing; oxidation; desorption; dissociation; kemisk fysik; Chemical Physics;

    Sammanfattning : This thesis presents experimental studies of three different chemical reaction steps relevant for heterogeneous catalysis: dissociation, desorption, and oxidation. CO on single-crystal metal surfaces was chosen as the model systems. LÄS MER

  3. 17. Microscopic Theory of Charge Complexes in Atomically-Thin Materials

    Författare :Raul Perea Causin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; phonons; trions; dynamics; propa- gation; excitons; many-body physics; dissociation; photoluminescence; 2D materials;

    Sammanfattning : Atomically-thin materials have emerged as the most promising two-dimensional platform for future optoelectronic applications and for the study of quantum many-body physics. In particular, transition metal dichalcogenides (TMDs) exhibit strong Coulomb interaction, resulting in the formation of tightly-bound electron-hole complexes that dominate optics, dynamics, and transport. LÄS MER

  4. 18. Molecular overlayers on homogeneous and heterogeneous metal surfaces studied by core-level photoemission

    Författare :Maria Smedh; Fysiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; photoelectron spectroscopy; core-level photoemission; electron energy loss spectroscopy; single crystal surfaces; metal surfaces; heterogeneous surfaces; adsorption; adsorbed molecules; hydrocarbons; molecular vibrations; carbon monoxide; adsorption sites; adsorption energy; diffusion; dissociation; Physics; Fysik; Fysicumarkivet A:2001:Smedh;

    Sammanfattning : The main topic of this thesis is the investigation of small molecules adsorbed on metal surfaces by means of core-level photoemission spectroscopy. The thesis consists of three parts; The first group of papers concerns the effects of internal molecular vibrations on the core-level photoemission spectra. LÄS MER

  5. 19. Studies on Fantasmical Anatomies

    Författare :Anne Juren; André Lepecki; Sandra Noeth; Victoria Perez Royo; Stockholms konstnärliga högskola; []
    Nyckelord :HUMANIORA; HUMANITIES; Choreography; Feldenkrais Method®; anatomy; fantasmical; speculative gestures; somatic practices; dislocation; dissection; dissociation; treatment; operation; fragmentation; blind gaze; non-expression; dance; movement; language; poetry; voice; touch; Foley; psychoanalysis; crisis; encounter; critical awareness; sensorial transference; co-regulation; body proxy; trans-interiority; symptom; practitioner; patient; session; lesson; L’Effet-Mère; mother tongue; very too close; very too far; diffraction; dérive drift ; Utbildning på forskarnivå i performativa och mediala praktiker; Third-Cycle Studies in Performative and Mediated Practices;

    Sammanfattning : Studies on Fantasmical Anatomies is an ongoing transdisciplinary artistic research, which encompasses the spectrum of experiences and practices that I have developed as a choreographer, dancer and Feldenkrais practitioner. My interest in anatomy and somatic practices grew out of multiple shoulder dislocations. LÄS MER

  7. 20. Modified oxygen and hydrogen transport in Zr-based oxides

    Författare :Clara Anghel; Gunnar Hultquist; Magnus Limbäck; Truls Norby; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zirconia; Zirconium; Zircaloy; hydrogen and oxygen diffusion; SPP; oxygen dissociating elements; oxidation; dissociation; hydration; CO adsorption; molecular transport; porosity.; Materials science; Teknisk materialvetenskap;

    Sammanfattning : Most metals and alloys in the presence of oxygen and moisture will instantaneously react and form a thin (2-5 nm) surface oxide layer. For further reaction to occur, oxygen ions and/or metal cations often diffuse through the already formed oxide layer. LÄS MER