Resonant wedge-plasmon modes in single-crystalline gold nanoplatelets

Lin Gu,1,* Wilfried Sigle,1,† Christoph T. Koch,1 Burcu Ogut,1 Peter A. van Aken,1 Nahid Talebi,1,2 Ralf Vogelgesang,3 Jianlin Mu,4 Xiaogang Wen,4 and Jian Mao4 1Max Planck Institute for Metals Research, Heisenbergstrase 3, D-70569 Stuttgart, Germany 2Photonics Research Laboratory, Center of Excellence for Applied Electromagnetic Systems, School of Electrical and Computer Engineering, University of Tehran, North Kargar Ave., Tehran, Iran 3Max Planck Institute for Solid State Research, Heisenbergstrase 1, D-70569 Stuttgart, Germany 4School of Material Science and Engineering, Sichuan University, 610065 Chengdu, People’s Republic of China (Received 22 December 2010; revised manuscript received 1 March 2011; published 24 May 2011)