Sökning: "hans he"

Visar resultat 1 - 5 av 97 avhandlingar innehållade orden hans he.

  1. 1. Engineering Epitaxial Graphene for Quantum Metrology

    Författare :Hans He; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Epitaxial Graphene; Magnetotransport; Quantum Resistance Metrology; Chemical Doping;

    Sammanfattning : Quantum resistance metrology deals both with the precise and accurate measurement of electrical resistance, by utilizing the quantum hall effect (QHE) in two-dimensional electron gases (2DEGs) such as those based on gallium arsenide (GaAs). Due to the unique properties of graphene, and specifically epitaxial graphene grown on silicon carbide (SiC/G), quantum Hall resistance (QHR) standards based on graphene perform better in a wider parameter space (temperature, current and magnetic field) than conventional semiconducting materials. LÄS MER

  3. 2. Molecular Doping of Epigraphene for Device Applications

    Författare :Hans He; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Molecular Doping; Graphene; epitaxial graphene; THz; Metrology; Hall Effect;

    Sammanfattning : Epitaxial graphene grown on silicon carbide, or epigraphene, offers in principle a suitable platform for electronic applications of graphene which require scalable, reproducible, and high-quality material. However, one of the main drawbacks of epigraphene lies in the difficulty in controlling its carrier density, which hinders its usefulness in future applications. LÄS MER

  4. 3. "-då skall han taga henne till äkta-" : oäkta födslar, äktenskapsmarknad och giftermålssystem i Östsverige och Västsverige 1750-1850

    Författare :Sigrid Håkanson; Hans Nilsson; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; illegitimacy; illegitimacy ratio; marriage market; matrimonial system; economic and social change.; historia; History;

    Sammanfattning : Already around 1750 the illegitimacy ratio was slightly higher in the countryside of Eastern Sweden than that of Western Sweden. The differences between the two regions started to grow around the turn of the century (1800). LÄS MER

  5. 4. Sport-sort : sorting algorithms and sport tournaments

    Författare :Hans Block; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Arrange a really short, thrilling and fair tournament! Execute parallel sorting in a machine of a new architecture! The author shows how these problems are connected. He designs several new tournament schemes, and analyses them both in theory and in extensive simulations. He uses only elementary mathematical and statistical methods. LÄS MER

  7. 5. Enigmatic origins : tracing the theme of historicity through Heidegger's works

    Författare :Hans Ruin; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Heidegger; historicity; phenomenology; hermeneutics; temporality; Augenblick; truth; Ereignis; Theoretical philosophy; Teoretisk filosofi; Theoretical Philosophy; teoretisk filosofi;

    Sammanfattning : The preoccupation with the "historicity" of thought and existence is central to thehermeneutic-phenomenological branch of modern philosophy. Its foremostrepresentative is Martin Heidegger, who in his main work Sein und Zeit (1927)developed a theory of historicity, according to which human beings not only exist inhistory, but are themselves historical. LÄS MER