期刊文献+

劈裂纳米环多极表面等离激元共振及折射率传感特性分析 被引量:1

Analysis of multipolar localized surface plasmon resonances in metallic split-ring resonators and refractive index sensing performances
下载PDF
导出
摘要 研究了在三开口劈裂金属纳米环中,当入射场偏振方向不同时出现的多极局域表面等离激元共振现象及折射率传感特性。研究表明,当入射场偏振方向分别沿x轴和y轴时,在可见光-近红外区域分别激发起两个和三个明显的共振峰。通过改变缺口的张角,能够实现对共振峰位和强度的可控调整。共振峰位处劈裂纳米环的近场分布表明,LHA(左半弧)和DRHA(双右半弧)之间等离激元的杂化耦合是形成上述共振的原因。劈裂纳米环的多极共振非常适合折射率传感应用。当改变周围环境折射率,入射场沿x轴偏振时,折射率敏感度的最大值可达到1365nm/RIU;入射场沿y轴偏振时,折射率敏感度最大值可达2229nm/RIU。 Metallic split-ring resonators with three gaps are studied in this paper. There are multipolar localized surface plasmon resonances in the spectra for different incident polarizations, and the refractive index sensing performances are also studied. It is shown that there are two and three prominent resonances in the visible light and near infrarad region when the incident polarization is along the x- and the y-axis, respectively. The resonance position and intensity can be well tuned by adjusting the angle between the gaps. Near field enhancement distributions of the split-ring resonators at the resonance peak reveal that plasmon hybridization between the the LHA(left half arc) and DRHA(double right arc) causes the multipolar resonances. The multipolar resonances are very suitable for refractive index sensing applications. It is shown that when the incident polarization is along x-axis, the maximum sensitivity of the refractive index is about 1365nm/RIU and when the polarization is along y-axis, the maximum sensitivity can be as large as 2229nm/RIU.
出处 《核聚变与等离子体物理》 CAS CSCD 北大核心 2015年第1期79-85,共7页 Nuclear Fusion and Plasma Physics
关键词 局域表面等离激元共振 劈裂纳米环 近场增强 共振模式 折射率传感 Localized surface plasmon resonances Split-ring resonator Near field enhancement Resonant model Refractive index sensing
  • 相关文献

参考文献23

  • 1López-Tejeira F,Rodrigo S G,Martín-Moreno L,et al.Efficient unidirectional nanoslit couplers for surface plasmons[J].Nature Phys.,2007,(3):324. 被引量:1
  • 2Yin L,Vlasko-Vlasov V K,Pearson J,et al.Subwavelength focusing and guiding of surface plasmons[J].Nano Lett.,2005,(5):1399. 被引量:1
  • 3Nomura W,Ohtsu M,Yatsui T.Nanodot coupler with a surface plasmon polariton condenser for optical far/near-field conversion[J].Appl.Phys.Lett.,2005,(86):181108. 被引量:1
  • 4Bozhevolnyi S I,Volkov V S,Devaux E,et al.Channel plasmon subwavelength waveguide components including interferometers and ring resonators[J].Nature,2006,440:508. 被引量:1
  • 5Gay G,Alloschery O,B Viaris de Lesegno,et al.Surface wave generation and propagation on metallic subwavelength structures measured by far-field interferometry[J].Phys.Rev.Lett.,2006,96:213901. 被引量:1
  • 6Garcia-Vidal F J,Pendry J B.Collective theory for surface enhanced Raman scattering[J].Phys.Rev.Lett.,1996,77:1163. 被引量:1
  • 7Laurent G,Félidj N,Grand J,et al.Raman scattering images and spectra of gold ring arrays[J].Phys.Rev.B,2006,73:245417. 被引量:1
  • 8Grosjean T,Fahys A,Suarez M,et al.Annular nanoantenna on fibre micro-axicon[J].J.Microsc.,2007,229:354. 被引量:1
  • 9Christ A,Martin O J F,Ekinci Y,et al.Symmetry breaking in a plasmonic metamaterial at optical wavelength[J].Nano Lett.,2008,(8):2171. 被引量:1
  • 10Fedotov V A,Rose M,Prosvirnin S L,et al.Sharp trapped-mode resonances in planar metamaterials with a broken structural symmetry[J].Phys.Rev.Lett.,2007,99:147401. 被引量:1

同被引文献4

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部