Essays about: "electron paramagnetic resonance"

Showing result 1 - 5 of 7 essays containing the words electron paramagnetic resonance.

  1. 1. Organic Solar Cell Fabrication and Study on the Influence of Spin-dependent Processes on the Photocurrent using Spin-sensitive Techniques

    University essay from Uppsala universitet/Fasta tillståndets fysik

    Author : Ronja Olsmats Baumeister; Evelina Roxner; [2022]
    Keywords : EDMR; EPR; trEDMR; PEDOT:PSS; PCBM; P3HT; organic solar cells; osc; opv;

    Abstract : Research in recent years on novel materials in organic solar cells (OSCs) have contributed to a rapid advancement in OSC efficiency. Here, OSCs with the well-studied organic semiconductors poly(3-hexylthiophene):[6,6]-phenyl C60-butyric acid methylester (P3HT:PCBM) in a bulk heterojunction structure were prepared to establish a baseline procedure for fabrication and spin-sensitive spectroscopy. READ MORE

  3. 2. A novel manganese cofactor : Elucidation and characterization of a high-valent manganese cofactor in ribonucleotide reductase using Electron Paramagnetic Resonance spectroscopy

    University essay from Uppsala universitet/Molekylär biomimetik

    Author : Sigrid Berglund; [2018]
    Keywords : ;

    Abstract : The in-biology novel high-valent manganese cofactor {MnIII MnIV} has been elucidated and characterized in a ribonucleotide reductase from Facklamia ignava, establishing the new radical-free ribonucleotide reductase class; class Id. The cofactor was found to be directly connected to catalytic activity and a mixed-metal cofactor was disproven using a newly formulated in vitro assembly protocol and activity assays. READ MORE

  4. 3. Characterization of an REE-enriched black substance in fractured bedrock in the Ytterby Mine

    University essay from Stockholms universitet/Institutionen för geologiska vetenskaper

    Author : Susanne Sjöberg; [2014]
    Keywords : ;

    Abstract : A black substance seeping from fractured bedrock was observed in tunnels leading to the mainshaft of the Ytterby mine on Resarö, Sweden. These are dry tunnels at shallow depth, +5 mabove sea level and 29 m below ground surface, resulting from the reconstruction of the mineinto a fuel deposit for the Swedish Armed Forces during the Cold War era. READ MORE

  5. 4. System for dose audit for external radiation therapy based on EPR dosimetry with Lithium Formate

    University essay from Fysikum

    Author : Zelga Malke; [2010]
    Keywords : Dose; audit;

    Abstract : Radiation therapy is an important method to treat cancer with the aim to deliver as high doses as reasonably achievable to the tumor while protecting the surrounding healthy tissue and organs at risk, OARs. Therefore, it is essential to have high accuracy in the dose delivered clinically and quality assurances are required. READ MORE

  6. 5. Spin-dependent Recombination in GaNAs

    University essay from Institutionen för fysik, kemi och biologi; Funktionella elektroniska material

    Author : Yuttapoom Puttisong; [2009]
    Keywords : GaNAs; spin filter; spin dependent recpmbination; defect;

    Abstract : Spin filtering properties of novel GaNAs alloys are reported in this thesis. Spin-dependent recombination (SDR) in GaNAs via a deep paramagnetic defect center is intensively studied. READ MORE