Behavioral and Modal Analysis of Graphene-Based Polygonal Optical Antenna for Enhanced Bio-molecular Detection

被引：7

作者：

Aditya, Rachakonda A. N. S. ^{[1
]}

Thampy, Anand Sreekantan ^{[1
]}

机构：

[1] Vellore Inst Technol, Sch Elect Engn, Dept Commun Engn, Vellore 632014, Tamil Nadu, India

来源：

PLASMONICS | 2019年 / 14卷 / 02期

关键词：

Graphene; Edge effect; Chemical potential; Field enhancement; Mode theory; Electrical breakdown; VIBRATIONAL SPECTROSCOPY; FIELD ENHANCEMENT; NANO-ANTENNA; NEAR-FIELD; ABSORPTION; EMISSION; LAYERS;

D O I：

10.1007/s11468-018-0804-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Graphene-based polygonal optical antenna is designed and analyzed for enhanced bio-molecular detection. Absorption cross section and electric field enhancement factors of three polygonal structures are compared. The hexagonal structure has exhibited 50% better absorption cross section as compared to that of other structures. Variation of electric field enhancement with frequency is studied and observed on the basis of mode theory. The hexagonal structure has shown an increment in electric field enhancement by 16.60 and 24.11% in contrast to the circular and rhombic structures respectively. Approximation of the hexagonal antenna structure using lumped equivalent circuit is done for better intuition. The vitality of the hexagonal optical antenna for bio-molecular detection is discussed with the aid of chemical potential tuning.

引用

页码：293 / 302

页数：10

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