Characterization of guiding properties of metallic nanorod metamaterials

Yi-Chun Ling; Lung-Yu Chang Chien; Yu-Chueh Hung

doi:10.1117/12.909808

22 February 2012 Characterization of guiding properties of metallic nanorod metamaterials

Yi-Chun Ling, Lung-Yu Chang Chien, Yu-Chueh Hung

Proceedings Volume 8269, Photonic and Phononic Properties of Engineered Nanostructures II; 82692O (2012) https://doi.org/10.1117/12.909808
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Metallic nanorod array metamaterials, consisting of nanowires arranged in a two-dimensional array, have exhibited many unique features and attracted much attention recently. Owing to the sensitive nature of the plasmon resonances to changes in geometrical parameters of nanorod arrays, significant shift in resonance wavelengths along with variances in field distribution have been observed. In this study, we characterize the distribution of electric fields and the energy flow in the metallic nanorod metamaterial by finite-difference time-domain (FDTD) method. We show that the direction of energy flow is strongly correlated to the geometrical parameters of nanorod arrays and the wavelength. We estimated the energy flow along a plasmonic waveguide and analyzed the field distribution in a unit cell corresponding to different geometrical parameters and excitation wavelength. The results show that the dominant direction of energy flow is related to the geometrical parameters and the excitation conditions. The reported phenomena for metallic nanorod metamaterials may find numerous applications for guiding structures and sensors.

Citation Download Citation

Yi-Chun Ling, Lung-Yu Chang Chien, and Yu-Chueh Hung "Characterization of guiding properties of metallic nanorod metamaterials", Proc. SPIE 8269, Photonic and Phononic Properties of Engineered Nanostructures II, 82692O (22 February 2012); https://doi.org/10.1117/12.909808

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