Sökning: "impurity transport"

Visar resultat 16 - 20 av 43 avhandlingar innehållade orden impurity transport.

  1. 16. Water-Induced Charge Transport in Microcrystalline Cellulose

    Författare :Martin Nilsson; Maria Strømme; Göran Alderborn; Jürgen Einfeldt; Uppsala universitet; []
    Nyckelord :Materials science; Materialvetenskap;

    Sammanfattning : Microcrystalline cellulose (MCC) is the most frequently used excipient for direct compaction of tablets within the pharmaceutical industry. It has earlier been indicated that the interactions between the hydration shell – surrounding the drug molecules in an MCC tablet – and the cellulose regulate the speed of the drug release process. LÄS MER

  3. 17. Spin transport in normal and superconducting nanowires

    Författare :Ninos Poli; Vladislav Korenivski; Mark Johnson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning : Todays conventional electronic devices are based on electron charge transport in semiconductor channels. Spintronics is a rapidly emerging technology, which exploits the spin degree of freedom as well as the charge of the electrons. LÄS MER

  4. 18. Quantum Transport in Superconductor-Semiconductor Nanowire Hybrid Devices

    Författare :Chunlin Yu; NanoLund: Centre for Nanoscience; []
    Nyckelord :Nanowire; InSb; Transport; Quantum dot; Majorana bound states; Andreev bound states; the Kondo effect; Superconductivity; Fysicumarkivet A:2018:Yu;

    Sammanfattning : In this thesis, we study quantum transport properties of superconductor-semiconductor nanowire hybrid devices. We mainly focus on the quantum transport in InSb nanowire Josephson quantum dot devices, i.e. quantum dots coupled to two pieces of superconductors. LÄS MER

  5. 19. Temperature Gradient Instabilities and Transport in Toroidal Plasmas

    Författare :Mats Fröjdh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis focuses on temperature gradient driven modes and their implications for heat and particle transport in toroidal plasmas. Some of the consequences of including an ion impurity species in a model for low frequency electrostatic modes and fluctuation driven transport are discussed. LÄS MER

  7. 20. Electron Transport and Charge Control in Epitaxial Graphene

    Författare :Michael Winters; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Graphene monolayers and bilayers have attracted research interest in both the physics and electronic materials communities owing to their unique band structures. In a pristine monolayer, carriers travel at the Fermi velocity v_f = 1e8 cm/s and exhibit linear dispersion. LÄS MER