2015, Herrmann, Hartmut, Schaefer, Thomas, Tilgner, Andreas, Styler, Sarah A., Weller, Christian, Teich, Monique, Otto, Tobias

[no abstract available]

2021, Yang, Tingxiang, Chettri, Avinash, Radwan, Basseem, Matuszyk, Ewelina, Baranska, Malgorzata, Dietzek, Benjamin

Small molecules are frequently used as dyes, labels and markers to visualize and probe biophysical processes within cells. However, very little is generally known about the light-driven excited-state reactivity of such systems when placed in cells. Here an experimental approach to study ps time-resolved excited state dynamics of a benchmark molecular marker, astaxanthin, in live human cells is introduced. © The Royal Society of Chemistry 2021.

2009, Kwon, A.R., Neu, V., Matias, V., Hänisch, J., Hühne, R., Freudenberger, J., Holzapfel, B., Schultz, L., Fähler, S.

It is well known that a variation of lattice constants can strongly influence the functional properties of materials. Lattice constants can be influenced by external forces; however, most experiments are limited to hydrostatic pressure or biaxial stress. Here, we present an experimental approach that imposes a large uniaxial strain on epitaxially grown films in order to tune their functional properties. A substrate made of a ductile metal alloy covered with a biaxially oriented MgO layer is used as a template for growth of epitaxial films. By applying an external plastic strain, we break the symmetry within the substrate plane compared to the as-deposited state. The consequences of 2% plastic strain are examined for an epitaxial hard magnetic Nd2Fe14B film and are found to result in an elliptical distortion of the in-plane anisotropy below the spin-reorientation temperature. Our approach is a versatile method to study the influence of large plastic strain on various materials, as the MgO(001) layer used is a common substrate for epitaxial growth.