Fabrication of non-planar silver nano-arc-gap arrays |
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Authors: | Shen Yang Liu Mingkai Wang Qianjin Zhan Peng Wang Zhenlin Zhu Qiangzhong Chen Xia Jiang Shaoji Wang Xuehua Jin Chongjun |
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Affiliation: | State Key laboratory of optoelectronic materials and technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China. |
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Abstract: | We developed a method to fabricate an array of silver non-planar nano-arc-gaps via inverted hemispherical colloidal lithography and shadow metal evaporation methods. It is found that there is a localized surface plasmon mode which results in extraordinary optical transmission. The electric field is strongly localized at the nano-arc-gap region and therefore induces a resonance that has an ultra-small mode volume of less than 2.44 × 10(-6) μm(3). The ratio of the quality factor to the mode volume is as high as 1.44 × 10(6) μm(-3). This would be valuable for the design of optoelectric circuits. |
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