* Corresponding authors

^a Elemental Bio-imaging Facility, University of Technology Sydney, Broadway, New South Wales, Australia
E-mail: philip.doble@uts.edu.au

^b Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 30, 48149 Münster, Germany
E-mail: uk@uni-muenster.de

^c IBE R&D Institute for Lung Health gGmbH, Mendelstr. 11, 48149 Münster, Germany

^d ARC Training Centre in Biodevices, Swinburne University of Technology, Hawthorn, Victoria, Australia