Figure 5

Time series of scans showing the water uptake dynamics of the yarn. (a) Radiographic projection images show the whole imaged yarn section at the beginning (0.0 seconds, dry) and the end (41.6 seconds, nearly completely wetted) of the uptake process. Scale bar: 200 μm (b) Magnified sections of the radiographic images, indicated by the blue boxes in (a), at several time points during the scan at the top (upper line) and bottom (lower line) of the sample. Scale bar: 100 μm (c) Vertical centre slice through the phase contrast reconstruction of the yarn sample at the beginning and the end of the scan series. Scale bar: 200 μm (d) Horizontal cuts, indicated by the red line in (c), through the reconstructed volume at the top and bottom at the same time points shown in (b). Scale bar: 100 μm (e) Rendering of the reconstructed volume at an intermediate time point during the uptake process, showing one vertical and three axial slices as well as a semi-transparent red isosurface outlining the volume of the combined yarn and water volume. Green outlines: Air bubble remaining in the yarn structure even at the end of the scan series.