Blar i Institutt for fysikk på forfatter "Ånes, Håkon Wiik"
-
Analyzing and improving open-source template matching for orientation mapping based on SPED data
Broussard, Joseph (Master thesis, 2022)Science has become and continues to be more reliant on fast, accurate, precise and understandable computational methods. Most scientific communities have been gravitating towards open source python packages, as python is ... -
Characterisation of photochromic oxygen-containing yttrium hydride by electron microscopy
Ånes, Håkon Wiik (Master thesis, 2017)Smart windows based on chromogenic materials have in recent years emerged as promising candidates for the next generation of energy-efficient windows. One group of chromogenic materials are photochromic, which are characterised ... -
Correlated subgrain and particle analysis of a recovered Al-Mn alloy by directly combining EBSD and backscatter electron imaging
Ånes, Håkon Wiik; Van Helvoort, Antonius; Marthinsen, Knut (Journal article, 2022)Correlated analysis of (sub)grains and particles in alloys is important to understand transformation processes and control material properties. A multimodal data fusion workflow directly combining subgrain data from electron ... -
Crystal Phase Mapping by Scanning Precession Electron Diffraction and Machine Learning Decomposition
Ånes, Håkon Wiik; Andersen, Ingrid Marie; Van Helvoort, Antonius (Journal article; Peer reviewed, 2018)Analyzing the distribution of crystal phases is required to understand nanostructures. Conventional analysis in the transmission electron microscope (TEM) include acquiring dark-field (DF) images for each expected crystal ... -
High resolution crystal orientation mapping of ultrathin films in SEM and TEM
Heinig, M. F.; Chatterjee, Dipanwita; Van Helvoort, Antonius; Wagner, Jakob B.; Kadkhodazadeh, S; Ånes, Håkon Wiik; Niessen, F; Bastos da Silva, A. (Peer reviewed; Journal article, 2022)Ultrathin metallic films are important functional materials for optical and microelectronic devices. Dedicated characterization with high spatial resolution and sufficient field of view is key to the understanding of the ... -
In-situ observations of dislocation recovery and low angle boundary formation in deformed aluminium
Ånes, Håkon Wiik; Van Helvoort, Antonius; Marthinsen, Knut (Journal article; Peer reviewed, 2019)An experimental study of the recovery of dislocations and low angle boundary formation in aluminium is presented. By combining in-situ annealing with orientation mapping in the transmission electron microscope, maps of ... -
Intermetallic Phase Layers in Cold Metal Transfer Aluminium-Steel Welds with an Al–Si–Mn Filler Alloy
Bergh, Tina; Ånes, Håkon Wiik; Aune, Ragnhild; Wenner, Sigurd; Holmestad, Randi; Ren, Xiaobo; Vullum, Per Erik (Peer reviewed; Journal article, 2023) -
Orientation dependent pinning of (sub)grains by dispersoids during recovery and recrystallization in an Al–Mn alloy
Ånes, Håkon Wiik; Van Helvoort, Antonius; Marthinsen, Knut (Peer reviewed; Journal article, 2023)The recrystallized grain size and texture in alloys can be controlled via the microchemistry state during thermomechanical processing. The influence of concurrent precipitation on recovery and recrystallization is here ... -
Processing and indexing of electron backscatter patterns using open-source software
Ånes, Håkon Wiik; Hjelen, Jarle; Sørensen, Bjørn Eske; Van Helvoort, Antonius; Marthinsen, Knut (Peer reviewed; Journal article, 2020)A new method to increase the signal-to-noise ratio S/N of electron backscatter patterns (EBSPs) based upon principal component analysis (PCA) is presented. The PCA denoising method is applied to ten scans of EBSPs from the ...