Details

Autor(en) / Beteiligte

• Lu, Guowei
• Xu, Jianning
• Wen, Te
• Zhang, Weidong
• Zhao, Jingyi
• Hu, Aiqin
• Barbillon, Grégory
• Gong, Qihuang

Titel

Hybrid Metal-Dielectric Nano-Aperture Antenna for Surface Enhanced Fluorescence

Ist Teil von

• Materials, 2018-08, Vol.11 (8), p.1435

Ort / Verlag

Switzerland: MDPI

Erscheinungsjahr

2018

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• A hybrid metal-dielectric nano-aperture antenna is proposed for surface-enhanced fluorescence applications. The nano-apertures that formed in the composite thin film consist of silicon and gold layers. These were numerically investigated in detail. The hybrid nano-aperture shows a more uniform field distribution within the apertures and a higher antenna quantum yield than pure gold nano-apertures. The spectral features of the hybrid nano-apertures are independent of the aperture size. This shows a high enhancement effect in the near-infrared region. The nano-apertures with a dielectric gap were then demonstrated theoretically for larger enhancement effects. The hybrid nano-aperture is fully adaptable to large-scale availability and reproducible fabrication. The hybrid antenna will improve the effectiveness of surface-enhanced fluorescence for applications, including sensitive biosensing and fluorescence analysis.