title: Inspired by competition.
authors.affiliation: Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
authors.forename: Eric
authors.initials: E
authors.lastname: Plum
authors.affiliation: St. Michael-Gymnasium, Markt 11, 53902 Bad Münstereifel, Germany.
authors.forename: Walter
authors.initials: W
authors.lastname: Stein