Dual-band microwave resonators based on cross hollow structures for refractive index sensing

被引：13

作者：

Hu, Sen ^{[1
,2
]}

Liu, Dan ^{[1
,2
]}

机构：

[1] Hubei Univ Educ, Sch Phys & Mech & Elect Engn, Wuhan 430205, Peoples R China

[2] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

PHYSICA SCRIPTA | 2020年 / 95卷 / 08期

基金：

中国国家自然科学基金;

关键词：

metamaterial; resonator; refractive index sensor; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; METAMATERIALS; RESONANCES; SENSORS; ANALOG;

D O I：

10.1088/1402-4896/ab9bdd

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We numerically and experimentally studied the electromagnetic characteristics of a suitably designed planar metamaterial which composed of cross hollow structures. The results show that two sharp transmission dips with quality factors of 7.93 and 19.3 can be generated in the microwave region under the excitation of normal incident electromagnetic wave. And if its surface is covered by 2 mm thick analyte, both of the two transmission dips show linearly spectral shift with the change of the analytes' refractive index. Using the two resonances as the identifiers, the calculated average refractive index sensitivities are 1.116 GHz/refractive index unit (RIU) and 2.357 GHz/RIU, with corresponding figure of merits (FOM) of 1.87 and 4.9. It offers a potential for sensing detection and provides a reliable reference for the design of excellent plasmonic sensors.

引用

页数：7

共 38 条

[1] Electromagnetic cloaking with metamaterials [J].

Alitalo, Pekka ;

Tretyakov, Sergei .

MATERIALS TODAY, 2009, 12 (03) :22-29

[2]

[Anonymous], 2010, WORLD SCI, DOI [DOI 10.1142/7439, DOI 10.1142/9789814287005_0032]

[3] Metamaterials Application in Sensing [J].

Chen, Tao ;

Li, Suyan ;

Sun, Hui .

SENSORS, 2012, 12 (03) :2742-2765

[4] Enhanced Nanoplasmonic Optical Sensors with Reduced Substrate Effect [J].

Dmitriev, Alexandre ;

Hagglund, Carl ;

Chen, Si ;

Fredriksson, Hans ;

Pakizeh, Tavakol ;

Kall, Mikael ;

Sutherland, Duncan S. .

NANO LETTERS, 2008, 8 (11) :3893-3898

[5] High-Sensitivity Metamaterial-Inspired Sensor for Microfluidic Dielectric Characterization [J].

Ebrahimi, Amir ;

Withayachumnankul, Withawat ;

Al-Sarawi, Said ;

Abbott, Derek .

IEEE SENSORS JOURNAL, 2014, 14 (05) :1345-1351

[6] Inverse-designed metastructures that solve equations [J].

Estakhri, Nasim Mohammadi ;

Edwards, Brian ;

Engheta, Nader .

SCIENCE, 2019, 363 (6433) :1333-+

[7] A FREE-SPACE METHOD FOR MEASUREMENT OF DIELECTRIC-CONSTANTS AND LOSS TANGENTS AT MICROWAVE-FREQUENCIES [J].

GHODGAONKAR, DK ;

VARADAN, VV ;

VARADAN, VK .

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 1989, 38 (03) :789-793

[8] Plasmonic Optical and Chiroptical Response of Self-Assembled Au Nanorod Equilateral Trimers [J].

Greybush, Nicholas J. ;

Pacheco-Pena, Victor ;

Engheta, Nader ;

Murray, Christopher B. ;

Kagan, Cherie R. .

ACS NANO, 2019, 13 (02) :1617-1624

[9] Symmetry Breaking in Plasmonic Nanocavities: Subradiant LSPR Sensing and a Tunable Fano Resonance [J].

Hao, Feng ;

Sonnefraud, Yannick ;

Van Dorpe, Pol ;

Maier, Stefan A. ;

Halas, Naomi J. ;

Nordlander, Peter .

NANO LETTERS, 2008, 8 (11) :3983-3988

[10] Tunability of Subradiant Dipolar and Fano-Type Plasmon Resonances in Metallic Ring/Disk Cavities: Implications for Nanoscale Optical Sensing [J].

Hao, Feng ;

Nordlander, Peter ;

Sonnefraud, Yannick ;

Van Dorpe, Pol ;

Maier, Stefan A. .

ACS NANO, 2009, 3 (03) :643-652

← 1 2 3 4 →