High Sensitivity Terahertz Biosensor Based on Mode Coupling of a Graphene/Bragg Reflector Hybrid Structure

被引：8

作者：

Liu, Yamei ^{[1
]}

Zheng, Qiwen ^{[1
]}

Yuan, Hongxia ^{[1
]}

Wang, Shenping ^{[1
]}

Yin, Keqiang ^{[1
]}

Dai, Xiaoyu ^{[2
]}

Zou, Xiao ^{[1
]}

Jiang, Leyong ^{[1
]}

机构：

[1] Hunan Normal Univ, Sch Phys & Elect, Changsha 410081, Peoples R China

[2] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China

来源：

BIOSENSORS-BASEL | 2021年 / 11卷 / 10期

基金：

中国国家自然科学基金;

关键词：

terahertz biosensor; Tamm plasmons; mode coupling; graphene; PHOTONIC CRYSTAL; PLASMON-POLARITON; SENSORS;

D O I：

10.3390/bios11100377

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, a high-sensitivity terahertz (THz) biosensor is achieved by using a graphene/Bragg reflector hybrid structure. This high-sensitivity THz biosensor is developed from the sharp Fano resonance transmission peak created by coupling the graphene Tamm plasmons (GTPs) mode to a defect mode. It is found that the proposed THz biosensor is highly sensitive to the Fermi energy of graphene, as well as the thickness and refractive index of the sensing medium. Through specific parameter settings, the composite structure can achieve both a liquid biosensor and a gas biosensor. For the liquid biosensor, the maximum sensitivity of > 1000 & DEG;/RIU is obtained by selecting appropriate parameters. We believe the proposed layered hybrid structure has the potential to fabricate graphene-based high-sensitivity biosensors.</p>

引用

页数：11

共 46 条

[1] Terahertz plasmonics: The rise of toroidal metadevices towards immunobiosensings [J].

Ahmadivand, Arash ;

Gerislioglu, Burak ;

Ahuja, Rajeev ;

Mishra, Yogendra Kumar .

MATERIALS TODAY, 2020, 32 :108-130

[2] Novel design of wide temperature ranges sensor based on Tamm state in a pyroelectric photonic crystal with high sensitivity [J].

Ahmed, Ashour M. ;

Mehaney, Ahmed .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2021, 125

[3] Biosensors based on Bloch surface waves in one-dimensional photonic crystal with graphene nanolayers [J].

Baghbadorani, H. Kaviani ;

Barvestani, J. ;

Entezar, S. Roshan .

APPLIED OPTICS, 2017, 56 (03) :462-469

[4]

Bonaccorso F, 2010, NAT PHOTONICS, V4, P611, DOI [10.1038/nphoton.2010.186, 10.1038/NPHOTON.2010.186]

[5]

Buerk D.G., 1995, BIOSENSORS THEORY AP, P187

[6] Improving the sensitivity of SPR sensors based on gratings by double-dips method (DDM) [J].

Cai, Debin ;

Lu, Yonghua ;

Lin, Kaiqun ;

Wang, Pei ;

Ming, Hai .

OPTICS EXPRESS, 2008, 16 (19) :14597-14602

[7] Ultrasensitive Multiple Guided-Mode Biosensor With Few-Layer Black Phosphorus [J].

Dai, Xiaoyu ;

Chen, Hao ;

Qiu, Chunyan ;

Wu, Leiming ;

Xiang, Yuanjiang .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2020, 38 (06) :1564-1571

[8] Sensitive optical biosensors for unlabeled targets: A review [J].

Fan, Xudong ;

White, Ian M. ;

Shopova, Siyka I. ;

Zhu, Hongying ;

Suter, Jonathan D. ;

Sun, Yuze .

ANALYTICA CHIMICA ACTA, 2008, 620 (1-2) :8-26

[9] Carbon Nanotubes as Optical Sensors in Biomedicine [J].

Farrera, Consol ;

Andon, Fernando Torres ;

Feliu, Neus .

ACS NANO, 2017, 11 (11) :10637-10643

[10] Enhanced Sensitivity of Surface Plasmon Resonance Sensor Based on Bilayers of Silver-Barium Titanate [J].

Fouad, S. ;

Sabri, Naseer ;

Jamal, Z. A. Z. ;

Poopalan, P. .

JOURNAL OF NANO- AND ELECTRONIC PHYSICS, 2016, 8 (04)

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