Sökning: "field emission"

Visar resultat 1 - 5 av 383 avhandlingar innehållade orden field emission.

  1. 1. Field emission from multi-walled carbon nanotubes

    Författare :Martin Sveningsson; Chalmers University of Technology; []
    Nyckelord :electron field emission; scanning tunneling microscope STM ; scanning electron microscope SEM ; transmission electron microscope TEM ; chemical vapour deposition; black-body radiation; current densities; carbon nanotubes;

    Sammanfattning : .... LÄS MER

  2. 2. Radio emission from supernovae

    Författare :Esha Kundu; Peter Lundqvist; Claes Fransson; Stephen Reynolds; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; supernovae; radio emission; hydrodynamical simulation; Astronomy; astronomi;

    Sammanfattning : This thesis presents the modeling of radio and X-ray emissions from supernova (SN) shock fronts and hydrodynamical simulations of SN-circumstellar medium (CSM) interaction. The interaction of SN ejecta with the CSM drives a strong shock wave into the CSM. LÄS MER

  3. 3. Inference on Dark Matter in Effective Field Theories : From XENON1T towards XENONnT: Chiral effective field theory analysis of nuclear recoils, single electrons and uncommon background modelling

    Författare :Vasile Cristian Antochi; Jan Conrad; Björn Penning; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Dark Matter; Direct Detection; Effective Field Theory; Chiral Effective Field Theory; Physics; fysik;

    Sammanfattning : Cosmological and astronomical observations show that most of the matter in the Universe is dark. This dissertation provides an overview of the dark matter evidence, and focuses on the particle dark matter hypothesis, describing possible particle candidates, concentrating on the Weakly Interactive Massive Particles (WIMPs). LÄS MER

  4. 4. Field Emission from Multi-walled Carbon Nanotubes and its Application in Nanoelectromechanical Systems

    Författare :Martin Sveningsson; Chalmers University of Technology; []
    Nyckelord :nanoelectromechanical systems; electron field emission; Fowler-Nordheim theory; Carbon nanotubes; Ohmic heating;

    Sammanfattning : Films of aligned multi-walled carbon nanotubes (MWCNTs) areinteresting for applications such as cold emission cathodes in flat-panel display technology and in lighting elements. MWCNTs are, besides this, good candidates to be used innanoelectromechanical systems (NEMS). LÄS MER

  5. 5. Modeling of Radio Emission from Supernovae : Application to Type Ia

    Författare :Esha Kundu; Peter Lundqvist; Claes Fransson; Talvikki Hovatta; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Supernova; Circumstellar interaction; Radio emission; Astronomy; astronomi;

    Sammanfattning : The interaction of supernova (SN) ejecta with the circumstellar medium (CSM) drives a strong shock wave into the CSM. These shocks are ideal places where effective particle acceleration and magnetic field amplification can take place. LÄS MER