Adding or removing water from hygroscopic materials of biological origin are some of the main processes during activities like cooking pasta or turning a slurry of cellulose fibers into paper.
For biological tissues like the living brain, the water self-diffusion properties are used to infer cell densities, shapes, and orientations, and how these structural properties are modified during pathological conditions . Magnetic resonance allows observation of how changing the water content affects the structures of swelling porous materials like cellulose fibers , leads to transitions between liquid crystalline phases in soap systems , and gives insights into why whole wheat pasta does not taste good .
Daniel Topgaard is professor at the Division of Physical Chemistry at Lund University. His main research projects are multidimensional difusion MRI and solid-state NMR methods for soft matter.
 Topgaard D. Multiple dimensions for random walks. J Magn Reson 2019;306:150-154. https://doi.org/10.1016/j.jmr.2019.07.024
 Topgaard D, Söderman O. Changes of cellulose fiber wall structure during drying investigated using NMR self-diffusion and relaxation experiments. Cellulose 2002;9:139-147. http://dx.doi.org/10.1023/A:1020158524621
 Bernin D, Koch V, Nydén M, Topgaard D. Multi-scale characterization of lyotropic liquid crystals using 2H and diffusion MRI with spatial resolution in three dimensions. PLOS ONE 2014;9:e98752. http://dx.doi.org/10.1371/journal.pone.0098752
 Steglich T, Bernin D, Moldin A, Topgaard D, Langton M. Bran particle size influence on pasta microstructure, water distribution and sensory properties. Cereal Chem 2015;92:617-623. http://dx.doi.org/10.1094/CCHEM-03-15-0038-R