Sökning: "probe"

Visar resultat 31 - 35 av 1187 avhandlingar innehållade ordet probe.

  1. 31. Using Light to Probe Surface Electrochemical Processes

    Författare :Weronica Linpe; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electrochemistry; X-ray methods; In situ; synchrotron radiation; Ex situ; Single crystal; polycrystalline; aluminium oxide; Au; Pd; Pt; Sn; Super duplex stainless steel.; Fysicumarkivet A:2021:Linpé;

    Sammanfattning : This thesis shows how various light-based in situ techniques can be used to follow different surface electrochemical processes such as electrochemical deposition into Nanoporous Anodic Aluminium Oxide (NP-AAO) templates and the surface structure of electrodes. Techniques based on both x-rays and visible light were used to follow surface structures and compositions, in situ. LÄS MER

  3. 32. Padlock Probe-Based Assays for Molecular Diagnostics

    Författare :Anja Mezger; Mats Nilsson; Paul Blainey; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Padlock probes; rolling circle amplification; molecular diagnostics; in situ mutation detection; Biochemistry; biokemi;

    Sammanfattning : Treatment success often depends on the availability of accurate and reliable diagnostic assays to guide clinical practitioners in their treatment choices. An optimal test must excel in specificity and sensitivity, and depending on the application area time, low-cost and simplicity are equally important. LÄS MER

  4. 33. Principles of Infrared - X-ray Pump-probe Spectroscopy

    Författare :Viviane Costa Felicissimo; Faris Gelmukha; Maria Marian Christel; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioengineering; Bioteknik;

    Sammanfattning : The present thesis concerns theoretical studies of molecular interactions investigated by infrared and X-ray spectroscopic techniques, with emphasis on using these two techniques combined in pump-probe experiments. Four main types of studies are addressed: the use of near-edge X-ray absorption fine structure spectra (NEXAFS) to manifest through-bond and through-space interactions; the role of hydrogen bonding in the formation of X-ray photoelectron spectra as evidenced by simulations of the water dimer; the development of theory, with sample applications, for infrared X-ray pump-probe spectroscopy; and molecular dynamics simulations of light-induced fragmentation of water clusters. LÄS MER

  5. 34. Atom-Probe Field-Ion Microscopy of Electronic Materials

    Författare :Qiu-Hong Hu; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Au GaAs; ohmic contact; superconductors; oxygen ordering; AuGe GaAs; defects; Ag GaAs; Schottky contact; YBa2Cu3O6 delta; APFIM;

    Sammanfattning : This thesis presents work in which atom-probe field-ion microscopy (APFIM) has been applied to two types of electronic materials. In the case of metal/GaAs contacts, the purpose was to characterise the microstructure of the contact interface, particularly the chemical composition variation across the interface. LÄS MER

  7. 35. Ferromagnetic Resonance as a Probe of Magnetization Dynamics : A Study of FeCo Thin Films and Trilayers

    Författare :Yajun Wei; Peter Svedlindh; Sujeet Chaudhary; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ferromagnetic resonance FMR ; Gilbert damping; magnetic coupling; FeCo;

    Sammanfattning : The high frequency dynamic magnetic responses of FeCo thin films and structures have been investigated mainly using ferromagnetic resonance (FMR) technique.The FMR resonance condition and linewidth are first derived from the dynamic Landau- Lifshitz-Gilbert equation, followed by a study of the conversion between FMR field and frequency linewidths. LÄS MER