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    • A study of III-V/HfO2 interfaces and silicon structure optimization 

      Lahti, Antti
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Physica, Mathematica : 683 (Turun yliopisto, 27.01.2023)
      Computational materials physics is a field where we try to understand the phenomena related to materials all around us. However we can only model a small sections portion of these materials in our computations, quantum ...

    • Ab initio investigations of the durability of iron alloys and titanium 

      Nurmi, Eero
      Turun yliopiston julkaisuja. Sarja A I: Astronomica – Chemica – Physica – Mathematica : 605 (Turun yliopisto, 14.06.2019)
      In this ab initio work the oxidation of Fe-Cr, Fe-Al, Fe-Cr-V and Fe-Cr-Al, and the elasticity of Fe-Cr-Al alloys and titanium were investigated. The computational method used was Exact Muffin-tin Orbitals method (EMTO). ...

    • Cantilever enhanced photoacoustic spectroscopy: The First two decades 

      Koskinen, Vesa
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis AI: Astronomica, Chemica, Mathematica : 706 (Turun yliopisto, 29.02.2024)
      Two decades ago, the first experiments with a novel optical microphone using a small silicon cantilever as its sensing element were conducted at the University of Turku. In retrospect, those experiments revealed the potential ...

    • Determination of absorbed dose by radiophotoluminescence dosimetry and Monte Carlo simulations 

      Saikkonen, Aleksi
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Physica, Mathematica : 687 | (Turun yliopisto, 21.04.2023)
      Radiation therapy (RT) utilizes the harmfulness of ionizing radiation for good, with the goal of destroying cancer cells without damaging too much healthy tissue. Dosimetry is always needed to achieve this goal. Dosimetry ...

    • Empirical modelling of solar energetic particles 

      Raukunen, Osku
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Physica, Mathematica : 648 (Turun yliopisto, 28.06.2021)
      Solar energetic particles (SEPs) are an important component of space weather. They pose a serious radiation hazard to electronic equipment and biological organisms in space. They are produced in explosive events such as ...

    • Investigation of properties of solar energetic particles and geomagnetic storms related to coronal mass ejections 

      Dheyaa, Ameri
      Turun yliopiston julkaisuja. Sarja A I: Astronomica – Chemica – Physica – Mathematica : 622 (Turun yliopisto, 19.12.2019)
      Solar energetic particles (SEPs) and geomagnetic storms related to coronal mass ejections (CMEs) are a major research topic in solar-terrestrial and geospace physics. Solar energetic particles and coronal mass ejections ...

    • Low bandwidth manganite (Gd, Ca)MnO3 for future memristor devices 

      Beiranvand, Azar
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Physica, Mathematica : 669 (Turun yliopisto, 21.05.2022)

    • Measurement simulability and incompatibility in quantum theory and other operational theories 

      Leppäjärvi, Leevi
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Mathematica : 646 (Turun yliopisto, 17.06.2021)
      Quantum theory is a particularly important instance of an operational theory.By looking at quantum theory from the perspective of more abstract operational framework one is able to study its properties in a wider context. ...

    • Memristor devices based on low-bandwidth manganites 

      Lähteenlahti, Ville
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Mathematica : 679 (Turun yliopisto, 12.12.2022)
      This dissertation investigates the phenomenon of resistive switching (RS) in lowbandwidth mixed-valence perovskite manganite oxides. In particular, the compounds Pr0.6Ca0.4MnO3 and Gd1−xCaxMnO3 with x between 0 and 1 are ...

    • Particle decay in the early universe 

      Lankinen, Juho
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Physica, Mathematica : 631 (Turun yliopisto, 12.12.2020)
      Particle decay processes have deep and profound implications in cosmology and especially on various early universe particle processes. Common decay rates, which may be experimentally verifed e.g., in particle accelerators, ...

    • Particle observations in near-earth space: Design and verification of particle instruments for CubeSat experiments 

      Oleynik, Philipp
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Physica, Mathematica : 658 (Turun yliopisto, 15.12.2021)
      This doctoral thesis presents the design, simulation, and calibration of two instruments developed to study energetic charged particles in low-Earth orbit. The near-Earth energetic charged particle populations include ...

    • Statistical properties of solar energetic proton events 

      Paassilta, Miikka
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Mathematica : 690 (Turun yliopisto, 30.05.2023)
      The Sun is the source of several different kinds of high-energy particles that are most prominently released in sudden large eruptions, known as solar energetic particle events. These particles, which escape the Sun and ...

    • Studies of oxide-semiconductor and metal-semiconductor interfaces for reducing defect densities 

      Ebrahimzadeh, Masoud
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis AI: Astronomica, Chemica, Mathematica : 705 (Turun yliopisto, 26.01.2024)
      This thesis presents experimental studies of two fundamental components of electronic devices: an oxide- and metal-semiconductor interface. The importance of these interfaces increases continuously when a device size is ...

    • Vortices and artificial defects in high-temperature superconducting thin films: Increasing the critical current densities via optimization of multilayer structures 

      Rivasto, Elmeri
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Physica, Mathematica : 696 (Turun yliopisto, 29.06.2023)
      This dissertation studies the implications of vortex dynamics in high-temperature superconducting thin films. The combined use of both experimental and computational methods enabled one to draw otherwise unobtainable ...

    • YBCO superconductor on buffered metallic tapes for coated conductor based applications: Modifying the pinning landscape for improving the critical current densities 

      Khan, Mukarram Zaman
      Turun yliopiston julkaisuja - Annales Universitatis Turkuensis, Ser A I: Astronomica, Chemica, Physica, Mathematica : 651 (Turun yliopisto, 25.09.2021)
      High temperature YBa2Cu3Oz<sub>6+x</sub>superconducting films are deposited on top of differently fashioned buffered metals to enhance the critical current density and its isotropy for coated conductor applications. The ...