http://scholars.ntou.edu.tw/handle/123456789/1763
標題: | Tunable Optical Performances on a Periodic Array of Plasmonic Bowtie Nanoantennas with Hollow Cavities | 作者: | Yuan-Fong Chou Chau Chung-Ting Chou Chao Jhin-Yu Rao Hai-Pang Chiang Chee Ming Lim Ren Chong Lim Nyuk Yoong Voo |
公開日期: | 20-九月-2016 | 出版社: | Springer Nature | 卷: | 11 | 起(迄)頁: | 411 | 來源出版物: | Nanoscale Research Letters | 摘要: | We propose a design method to tune the near-field intensities and absorption spectra of a periodic array of plasmonic bowtie nanoantennas (PBNAs) by introducing the hollow cavities inside the metal nanostructures. The numerical method is performed by finite element method that demonstrates the engineered hollow PBNAs can tune the optical spectrum in the range of 400–3000 nm. Simulation results show the hollow number is a key factor for enhancing the cavity plasmon resonance with respect to the hotspot region in PBNAs. The design efforts primarily concentrate on shifting the operation wavelength and enhancing the local fields by manipulating the filling dielectric medium, outline film thickness, and hollow number in PBNAs. Such characteristics indicate that the proposed hollow PBNAs can be a potential candidate for plasmonic enhancers and absorbers in multifunctional opto-electronic biosensors. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/1763 | ISSN: | 1931-7573 | DOI: | 10.1186/s11671-016-1636-x |
顯示於: | 光電與材料科技學系 |
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