1. Institute of Photonics Faculty of Mathematics and Physics Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering–Innovation Across Disciplines) Gottfried Wilhelm Leibniz Universität Hannover 30169 Hannover Germany
2. College of Civil Engineering Tongji University 1239 Siping Road Shanghai 200092 China
3. Institute of Structural Mechanics Bauhaus Universität Weimar Marienstr. 15 99423 Weimar Germany