کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1813940 | 1025642 | 2009 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Two resonances effect for light transmission assisted with surface plasmon through perforated metal film Two resonances effect for light transmission assisted with surface plasmon through perforated metal film](/preview/png/1813940.png)
When light is incident on a nonplanar metal surface, an oscillating dipole is excited at the entrance openings. We show that the enhanced transmission assisted with surface plasmon (SP) through a perforated metal film results from two different SP resonances effects: (i) zero-order Fabry–Perot resonance effect where each air hole can be considered as a section of metallic waveguide, forming a low-quality-factor resonator, and many dipoles are arranged inside the nanoholes region; and (ii) structure-factor-induced charges self-tunnelling effect due to the well-recognized surface structure periodicity, where the positive or negative charges can respectively tunnel into the right surface through the metal walls. Furthermore, when light transmits through the double-layer perforated metal films, the different transport behaviors are also clearly shown, which convinces the existence of dual SP resonances effect.
Journal: Physica B: Condensed Matter - Volume 404, Issue 2, 28 February 2009, Pages 278–284