1. Department of Physics, Umeå University, Linnaeus väg 24, 901 87 Umeå, Sweden
2. Department of Chemistry and Industrial Chemistry, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
3. Department of Physics and Astronomy, University of Florence, via Sansone 1, 50019 Sesto, Fiorentino, Italy
4. Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
5. Dipartimento di Scienze e Metodi dell’Ingegneria, University of Modena and Reggio-Emilia, Via Amendola 2, 42122 Reggio, Emilia, Italy
6. Umeå Centre for Microbial Research, 901 87 Umeå, Sweden
7. Integrated Science Lab, 901 87 Umeå, Sweden