Sökning: "dipole orientation"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden dipole orientation.

  1. 1. Automating Water Orientation in Neutron Crystallography using Convolutional Neural Networks

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Simon Bakran; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : One important aspect of determining the functionality of proteins is to find the direction of the dipole moment of surrounding water molecules. This is equivalent to finding the position of the hydrogen in water, however with the current atomistic model building tools this is a tedious and time-consuming task. LÄS MER

  2. 2. Polarizability and Orientation Dynamics of Small Proteins

    Master-uppsats, Uppsala universitet/Materialteori

    Författare :Ebba Koerfer; [2022]
    Nyckelord :Protein orientation; single-particle imaging; polarizability; orientation dynamics; rigid rotor model;

    Sammanfattning : Proteins often carry an intrinsic electric dipole moment, which can interact with external electric fields and cause protein motion. Previous research has found that the orientation of small proteins in gas phase can be controlled in a static electric field. LÄS MER

  3. 3. Sustaining Orientation of Ubiquitin for Single Particle Imaging Using Electric Fields

    Kandidat-uppsats, Uppsala universitet/Kemisk och biomolekylär fysik; Uppsala universitet/Energimaterialens fysik

    Författare :Adi Bijedic; [2021]
    Nyckelord :;

    Sammanfattning : Single-particle imaging, or SPI, is a method used to obtain the three-dimensional structure of particles. Repeatedly aiming X-rays at samples of a particle produces diffraction patterns, which are combined to a best-fit three-dimensional model of the particle. SPI of proteins can be improved by orienting the protein before imaging. LÄS MER

  4. 4. Dipole Orientation of Gas Phase Ubiquitin Using Time Dependent Electric Fields

    Kandidat-uppsats, Uppsala universitet/Molekyl- och kondenserade materiens fysik

    Författare :Harald Agelii; [2020]
    Nyckelord :dipole orientation; protein; spectography; GROMACS; simulation; single particle imaging;

    Sammanfattning : The method of dipole orientation of protein complexes using electric fields plays a key role in the development of single particle imaging, since it enables orientation of the protein in vacuum. In the orientation process the protein is exposed to an external electric field along which the dipole axis of the protein will eventually align. LÄS MER

  5. 5. Alignment and orientation of Nanowires in a thin film under the influence of an electric field

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Sara Thorberg; [2016]
    Nyckelord :Nanowires; nanotechnology; solar cell; thin film; electric field; Physics and Astronomy;

    Sammanfattning : The demand for cheaper and more efficient solar cells is high. One way to decrease cost of material, while maintaining a high degree of efficiency, is to take advantage of nanomaterials. LÄS MER