The Fano-Like Resonance in Self-Assembled Trimer Clusters
ZHANG Mei1, LI Liang-Sheng2,3**, ZHENG Ning3, SHI Qing-Fan3**
1Faculty of Computers, Guangdong University of Technology, Guangzhou 510006 2Science and Technology on Electromagnetic Scattering Laboratory, Beijing 100854 3School of Physics, Beijing Institute of Technology, Beijing 100081
Abstract：We illustrate that three identical nanocylinders self-assembled into a trimer with a small interparticle gap separation support strong Fano-like interference. The asymmetry line shape of the Fano-like resonance can be controlled by modifying the cluster structures, and a narrow linewidth between a peak and a dip is displayed in the line trimer. The resonant behaviors of the trimers could be strengthened by increasing the permittivity of the nanorods, and the asymmetry resonance is highly sensitive to the angle of the incident wave due to the orientation-dependent coupling between the cylinders in the cluster. The present study provides a way to investigate the environmental change caused by the reshaped asymmetry line, which can be applied to future high-performance resonance sensors.
[1] Lukyanchuk B, Zheludev N I, Maier S A, Halas N J, Nordlander P, H Giessen and Chong C T 2010 Nat. Mater.9 707 [2] Liu N, Mario H, Thomas W, Alivisatos A P and Harald G 2011 Science332 1407 [3] Fedotov V A, Rose1 M, Prosvirnin S L, Papasimakis N and Zheludev N I 2007 Phys. Rev. Lett.99 147401 [4] McLeod A, Weber-Bargioni A, Zhang Z, Dhuey S, Harteneck B, Neaton J B, Cabrini S and Schuck P J 2011 Phys. Rev. Lett.106 037402 [5] Yang Z, Zhang Z, Zhang L, Li Q, Hao Z and Wang Q 2011 Opt. Lett.36 1542 [6] Chen F, Negash A and Johnston R L 2011 AIP Adv.1 032134 [7] Tripathy S, Renaud M, Vivian K L, Siew L T, Enyi Y, Arnaud A, Lucien S, Christian G, Han M Y and Adnen M 2011 Nano Lett.11 431 [8] Lev C and Gilad H 2011 Nano Lett.11 2440 [9] Fan J A, Kui B, Wu C, Bao J, Rizia B, Naomi J H, Vinothan N M, Gennady S, Peter N and Federico C 2010 Nano Lett.10 4680 [10] Fan J A, Wu C, Bao K, Bao J, Bardhan R, Halas N J, Manoharan V N, Nordlander P, Shvets G and Capasso F 2010 Science328 1135 [11] Lassiter J B Heidar S, Jonathan A F, Janardan K, Federico C, Peter N and Naomi J H 2010 Nano Lett.10 3184 [12] Tribelsky M I, Sergej F, Andrey E M, Andrey V G and Yuri S K 2008 Phys. Rev. Lett.100 043903 [13] Andrey E M, Sergej F and Yuri S K 2010 Rev. Mod. Phys.82 2257 [14] Niels V, Yannick S, Heidar S, Feng H, Victor V M, Pol V D, Peter N and Stefan A M 2009 Nano Lett.9 1663 [15] Jose M R, Ramon A A and Luis M L 2011 Nanoscale3 1304 [16] Teperik T V and Degiron A 2012 Phys. Rev. Lett.108 147401 [17] Erb R M, Son H S, Samanta B, Rotello V M and Yellen B B 2009 Nature457 999 [18] Bo Y, Svetlana V B and Reinhard B M 2011 J. Phys. Chem. C 115 4578 [19] Yasumoto K (Edited) 2006 Electromagnetic Theory And Applications For Photonic Crystals (Florida: CRC Press) [20] Petru G, Gregory V, Marine L, Nathalie B, Riad H, Jean-Luc P and Stephane C 2012 Phys. Rev. Lett.109 143903
2013, Vol. 30 
