Scholarlink

<p>This paper presents a novel rectangular aperture nano-antenna (RANA) design based on a hybrid plasmonic waveguide (HPW) configuration. The performance of the HPW is evaluated through theoretical analysis and compared with results from the Finite Integration Technique (FIT). The overall performance of the RANA is investigated at an operational frequency of 450 THz using both FIT and the Finite Element Method (FEM). The nano-antenna exhibits a directional radiation pattern, which is leveraged for refractive index biosensing. The biosensor’s performance is characterized using a dry protein model with a refractive index ranging from 1.7 to 1.9. The sensing mechanism relies on monitoring shifts in the beam direction and variations in the power flow peak in response to changes in the refractive index of the dry protein as a material under test (MUT). The proposed biosensor achieves a sensitivity of 34.5 degrees per refractive index unit (RIU). The biosensor maintains strong performance over a 2 percent bandwidth centered at operational frequency, enhancing its detection robustness.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A directional nanoantenna design based on a hybrid plasmonic waveguide: theoretical analysis for biosensing applications

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月1日

查看全文
  • Mohammad AzimBeik,
  • Gholamreza Moradi,
  • Abdolali Abdipour

摘要

This paper presents a novel rectangular aperture nano-antenna (RANA) design based on a hybrid plasmonic waveguide (HPW) configuration. The performance of the HPW is evaluated through theoretical analysis and compared with results from the Finite Integration Technique (FIT). The overall performance of the RANA is investigated at an operational frequency of 450 THz using both FIT and the Finite Element Method (FEM). The nano-antenna exhibits a directional radiation pattern, which is leveraged for refractive index biosensing. The biosensor’s performance is characterized using a dry protein model with a refractive index ranging from 1.7 to 1.9. The sensing mechanism relies on monitoring shifts in the beam direction and variations in the power flow peak in response to changes in the refractive index of the dry protein as a material under test (MUT). The proposed biosensor achieves a sensitivity of 34.5 degrees per refractive index unit (RIU). The biosensor maintains strong performance over a 2 percent bandwidth centered at operational frequency, enhancing its detection robustness.