1. Complex Materials Department of Materials ETH Zürich Zürich 8093 Switzerland
2. Laboratory for Nanometallurgy Department of Materials ETH Zürich Zürich 8093 Switzerland
3. Department of Mechanical Engineering MIT Cambridge MA 02139 USA
4. Department of Chemistry University of Fribourg Fribourg 1700 Switzerland
5. Department of Health Sciences and Technology Institute for Translational Medicine ETH Zürich Zürich 8093 Switzerland