[1] Department of Physics, Technical University of Denmark, Fysikvej 1, Kongens Lyngby,2800, Denmark
[2] Department of Civil and Mechanical Engineering, Technical University of Denmark, Koppels Allé Building 404, Kongens Lyngby,2800, Denmark
[3] Exruptive A/S, Højnæsvej 75, Rødovre,2610, Denmark