• 3D Maps of Mineral Composition and Hydroxyapatite Orientation in Fossil Bone Samples Obtained by X-ray Diffraction Computed Tomography 

      Mürer, Fredrik Kristoffer; Sanchez, Sophie; Alvarez-Murga, Michelle; Di Michiel, Marco; Pfeiffer, Franz; Bech, Martin; Breiby, Dag Werner (Journal article; Peer reviewed, 2018)
      Whether hydroxyapatite (HA) orientation in fossilised bone samples can be non-destructively retrieved and used to determine the arrangement of the bone matrix and the location of muscle attachments (entheses), is a question ...
    • Computed X-ray Tomography Study of Carbonate Precipitation in Large Portland Cement Pores 

      Chavez Panduro, Elvia Anabela; Torsæter, Malin; Gawel, Kamila; Bjørge, Ruben; Gibaud, Alain; Bonnin, Anne; Schlepütz, Christian M.; Breiby, Dag Werner (Journal article; Peer reviewed, 2019)
      Cement degradation caused by CO2 exposure is an increasingly important environmental challenge that must be understood, for example, if former oil reservoirs are to be used for CO2 storage. When exposed to CO2-saturated ...
    • Fourier ptychography algorithm based on scaled Fourier transform 

      Hasanzade, Mojde; Hussain, Nazabat; Breiby, Dag Werner; Akram, Muhammad Nadeem (Peer reviewed; Journal article, 2021)
      This letter discusses an alternative Fourier ptychography algorithm based on the scaled fast Fourier transform propagation. The advantage of this scheme is that it enables a zoom-in capability of the object spectrum and ...
    • High-energy X-ray Tomography for 3D Void Characterization in Au–Sn Solid-Liquid Interdiffusion (SLID) Bonds 

      Aasmundtveit, Knut; Tekseth, Kim Robert Bjørk; Breiby, Dag Werner; Nguyen, Hoang-Vu (Chapter, 2019)
      Au-Sn SLID bonding is a technique originally developed for harsh environment applications. The technology has recently shown promising results for ultrasound transducer fabrication. Characterizing the spatial and size ...
    • High-resolution Fourier Ptychography Microscopy using ultra-violet light and infrared light 

      Duong Gia, Huy (Master thesis, 2023)
      This thesis focuses on implementing the Fourier Ptychography Microscopy (FPM) technique using Ultra-violet (UV) and infrared (IR) light. In this report, the introduction provides a brief overview of FPM, its history, ...
    • High-resolution polarization-sensitive Fourier ptychography microscopy using a high numerical aperture dome illuminator 

      Gholamimayani, Mahdieh; Tekseth, Kim Robert Bjørk; Breiby, Dag Werner; Klein, Joern; Akram, Muhammad Nadeem (Journal article; Peer reviewed, 2022)
      Polarization-sensitive Fourier-ptychography microscopy (pFPM) allows for high resolution imaging while maintaining a large field of view, and without mechanical movements of optical-setup components. In contrast to ordinary ...
    • Improved resolution Fourier ptychography scheme using oil-filled dome-shaped LED array 

      Mayani, Mahdieh Gholami; Hussain, Nazabat; Breiby, Dag Werner; Akram, Muhammad Nadeem (Peer reviewed; Journal article, 2022)
      Utilising angular-varied illumination in Fourier Ptychography, the resolution of optical microscopes can be increased and the phase of the sample can also be recovered while maintaining a wide field-of-view. In this work, ...
    • Nanoscale imaging of shale fragments with coherent X-ray diffraction 

      Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Mürer, Fredrik Kristoffer; Cerasi, Pierre; Chushkin, Yuriy; Zontone, Federico; Gibaud, Alain; Breiby, Dag Werner (Peer reviewed; Journal article, 2020)
      Despite the abundance of shales in the Earth's crust and their industrial and environmental importance, their microscale physical properties are poorly understood, owing to the presence of many structurally related mineral ...
    • Orientational mapping of minerals in Pierre shale using X-ray diffraction tensor tomography 

      Mürer, Fredrik Kristoffer; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Di Michiel, Marco; Cerasi, Pierre; Chattopadhyay, Basab; Breiby, Dag Werner (Peer reviewed; Journal article, 2021)
      Shales have a complex mineralogy with structural features spanning several length scales, making them notoriously difficult to fully understand. Conventional attenuation-based X-ray computed tomography (CT) measures density ...
    • Quantifying the hydroxyapatite orientation near the ossification front in a piglet femoral condyle using X-ray diffraction tensor tomography 

      Mürer, Fredrik Kristoffer; Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Di Michel, Marco; Liebi, Marianne; Lilledahl, Magnus Borstad; Olstad, Kristin; Breiby, Dag Werner (Peer reviewed; Journal article, 2021)
      While a detailed knowledge of the hierarchical structure and morphology of the extracellular matrix is considered crucial for understanding the physiological and mechanical properties of bone and cartilage, the orientation ...
    • Real time 3D observations of Portland Cement Carbonation at CO2 storage conditions 

      Chavez Panduro, Elvia Anabela; Cordonnier, Benoit; Gawel, Kamila; Børve, Ingrid; Iyer, Jaisree; Carroll, Susan; Michels, Leander; Rogowska, Melania; McBeck, Jessica Ann; Sørensen, Henning Osholm; Walsh, Stuart D.C.; Renard, Francois; Gibaud, Alain; Torsæter, Malin; Breiby, Dag Werner (Peer reviewed; Journal article, 2020)
      Depleted oil reservoirs are considered a viable solution to the global challenge of CO2 storage. A key concern is whether the wells can be suitably sealed with cement to hinder the escape of CO2. Under reservoir conditions, ...
    • Wide field-of-view Fourier Ptychography microscopy based on Fresnel propagation scheme 

      Hasanzade, Mojde; Breiby, Dag Werner; Akram, Muhammad Nadeem (Journal article; Peer reviewed, 2022)
      Fourier ptychographic microscopy (FPM) is a computational imaging method that gives a significantly increased space-bandwidth product, in practice high resolution combined with a wide field of view. In this article, we ...
    • X-ray nanoscopy of a bulk heterojunction 

      Patil, Nilesh; Skjønsfjell, Eirik Torbjørn Bakken; Van den Brande, Niko; Chavez Panduro, Elvia Anabela; Claessens, Raf; Guizar-Sicairos, Manuel; Van Mele, Bruno; Breiby, Dag Werner (Journal article; Peer reviewed, 2016)
      Optimizing the morphology of bulk heterojunctions is known to significantly improve the photovoltaic performance of organic solar cells, but available quantitative imaging techniques are few and have severe limitations. ...