http://scholars.ntou.edu.tw/handle/123456789/1765
Title: | Manipulating near field enhancement and optical spectrum in a pair-array of the cavity resonance based plasmonic nanoantennas | Authors: | Yuan-Fong Chou Chau Jhih-Cyuan Jiang Chung-Ting Chou Chao Hai-Pang Chiang Chee Ming Lim |
Issue Date: | 30-Nov-2016 | Publisher: | IOP Publishing | Journal Volume: | 49 | Journal Issue: | 47 | Start page/Pages: | 475102 | Source: | Journal of Physics D: Applied Physics | Abstract: | A 2D periodic pair-array of cavity resonance based (CRB) plasmonic nanoantennas (PNAs) on the tailoring near field enhancement and optical spectrum of surface plasmon resonance (SPR) modes is numerically investigated by using the finite element method. The CRBPNAs consist of a single cavity or double cavities in each antenna arm. Detailed physical explanations of the simulation results and consistent dependencies of the SPR features on the structural and material parameters of CRBPNAs are presented. Compared to the solid case of counterpart, the proposed CRBPNAs display outstanding SPR characteristics and tune the peak resonance wavelength by varying the outline thickness and the cavity material. In addition, the field enhancement and optical spectrum can be precisely controlled by cavity material and outline thickness in the broad band of ultraviolet, visible and near-infrared, resulting in increased sensitivity and supporting resonances with gaps and cavity surface plasmom as well as the high value of Q factors. We interpret the optical properties of the proposed CRBPNAs and show tuning and optimizing through choice of geometric and material parameters. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/1765 | ISSN: | 0022-3727 | DOI: | 10.1088/0022-3727/49/47/475102 |
Appears in Collections: | 光電與材料科技學系 |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.