Lattice resonances in antenna arrays for liquid sensing in the terahertz regime

被引：56

作者：

Ng, B. ^{[1
,3
]}

Hanham, S. M. ^{[1
]}

Giannini, V. ^{[1
]}

Chen, Z. C. ^{[2
,3
]}

Tang, M. ^{[2
]}

Liew, Y. F. ^{[2
,3
]}

Klein, N. ^{[1
]}

Hong, M. H. ^{[2
,3
]}

Maier, S. A. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

[3] A STAR Agcy Sci, Data Storage Inst, Singapore 117608, Singapore

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 15期

基金：

英国工程与自然科学研究理事会;

关键词：

METAMATERIALS; SPECTROSCOPY; SCATTERING;

D O I：

10.1364/OE.19.014653

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Terahertz antenna arrays supporting narrow lattice resonances are proposed as an alternative sensor-on-chip approach to liquid sensing. An array of metallic rectangular antennas fabricated on a polyethylene naphthalate (PEN) substrate is used to demonstrate the sensing of a number of fluids. Good agreement is shown between experiment and simulation with Q-factors of around 20 and a figure-of-merit (FOM) of 3.80 being achieved. Liquid sensing with antenna arrays is simple both in terms of fabrication and setup. The working frequency can be tuned with a suitable choice of substrates and array parameters. The nature of the lattice resonance means that the whole sample is used to provide the conditions required for resonance occurrence, eliminating the need to preferentially locate the sample in small areas of high field concentration. The antenna arrays could also potentially be coupled with a microfluidic system for in situ sensing or used in a reflection setup. (C) 2011 Optical Society of America

引用

页码：14653 / 14661

页数：9

共 34 条

[1]

[Anonymous], 1969, ANTENNA THEORY 2

[2] Collective resonances in gold nanoparticle arrays [J].

Auguie, Baptiste ;

Barnes, William L. .

PHYSICAL REVIEW LETTERS, 2008, 101 (14)

[3] On-chip THz detection of biomaterials: A numerical study [J].

Baras, T ;

Kleine-Ostmann, T ;

Koch, M .

JOURNAL OF BIOLOGICAL PHYSICS, 2003, 29 (2-3) :187-194

[4] Label-free probing of the binding state of DNA by time-domain terahertz sensing [J].

Brucherseifer, M ;

Nagel, M ;

Bolivar, PH ;

Kurz, H ;

Bosserhoff, A ;

Büttner, R .

APPLIED PHYSICS LETTERS, 2000, 77 (24) :4049-4051

[5] Asymmetric coupling between subradiant and superradiant plasmonic resonances and its enhanced sensing performance [J].

Chen, Chia-Yun ;

Un, Ieng-Wai ;

Tai, Nyan-Hwa ;

Yen, Ta-Jen .

OPTICS EXPRESS, 2009, 17 (17) :15372-15380

[6]

CHEN HT, 2008, INT J TERAHERTZ SCI, V1, P42

[7] Stretchable metal-elastomer nanovoids for tunable plasmons [J].

Cole, Robin M. ;

Mahajan, Sumeet ;

Baumberg, Jeremy J. .

APPLIED PHYSICS LETTERS, 2009, 95 (15)

[8]

COLLINS RE, 1969, ANTENNA THEORY 1

[9] Frequency selective surfaces for high sensitivity terahertz sensing [J].

Debus, Christian ;

Bolivar, Peter Haring .

APPLIED PHYSICS LETTERS, 2007, 91 (18)

[10] Tuned permeability in terahertz split-ring resonators for devices and sensors [J].

Driscoll, T. ;

Andreev, G. O. ;

Basov, D. N. ;

Palit, S. ;

Cho, S. Y. ;

Jokerst, N. M. ;

Smith, D. R. .

APPLIED PHYSICS LETTERS, 2007, 91 (06)

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