Abstract

To investigate dependence of the sensitivity of THz metamaterials on the position of target dielectric materials, we functionalized the metamaterial gap with an adhesive polymer. A shift in resonance frequency occurs when polystyrene microbeads are deposited in the gap of the metamaterial’s metal resonator pattern, while little change is observed when they are deposited on other areas of the metasurface. A two-dimensional mapping of the sensitivity, with a grid size of 1 µm, is obtained from a finite-difference time-domain simulation: The frequency shift is displayed as a function of the position of a target dielectric cube. The resulting sensitivity distribution clearly reveals the crucial role of the gap in sensing with metamaterials, which is consistent with the electric field distribution near the gap.

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  13. S. J. Park, S. A. N. Yoon, and Y. H. AhnDielectric constant measurements of thin films and liquids using terahertz metamaterialsRSC Adv.201666938169386
  14. J. T. Hong, D. J. Park, J. H. Yim, J. K. Park, J. Y. Park, S. Lee, and Y. H. AhnDielectric constant engineering of single-walled carbon nanotube films for metamaterials and plasmonic devicesJ. Phys. Chem. Lett.2013439503957
  15. J. T. Hong, S. W. Jun, S. H. Cha, J. Y. Park, S. Lee, G. A. Shin, and Y. H. AhnEnhanced sensitivity in THz plasmonic sensors with silver nanowiresSci. Rep.2018815536
  16. S. J. Park, S. A. N. Yoon, and Y. H. AhnEffective sensing volume of terahertz metamaterial with various gap widthsJ. Opt. Soc. Korea201620628632
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  20. A. Berrier, P. Albella, M. Ameen Poyli, R. Ulbricht, M. Bonn, J. Aizpurua, and J. G. RivasDetection of deep-subwavelength dielectric layers at terahertz frequencies using semiconductor plasmonic resonatorsOpt. Express20122050525060
  21. T. Chen, S. Li, and H. SunMetamaterials application in sensingSensors20121227422765
  22. K. Colville, N. Tompkins, A. D. Rutenberg, and M. H. JerichoEffects of poly (L-lysine) substrates on attached escherichia coli bacteriaLangmuir20102626392644
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  24. S. J. Park, A. R. Kim, J. T. Hong, J. Y. Park, S. Lee, and Y. H. AhnCrystallization kinetics of lead halide perovskite film monitored by in situ terahertz spectroscopyJ. Phys. Chem. Lett.20178401406
  25. H. S. Kim, S. H. Cha, B. Roy, S. H. Kim, and Y. H. AhnHumidity sensing using THz metamaterial with silk protein fibroinOpt. Express2018263357533581
  26. D. J. Park, J. T. Hong, J. K. Park, S. B. Choi, B. H. Son, F. Rotermund, S. Lee, K. J. Ahn, D. S. Kim, and Y. H. AhnResonant transmission of terahertz waves through metallic slot antennas on various dielectric substratesCurr. Appl. Phys.201313753757
  27. D. J. Park, S. J. Park, I. Park, and Y. H. AhnDielectric substrate effect on the metamaterial resonances in terahertz frequency rangeCurr. Appl. Phys.201414570574
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Other (28)

R. A. Shelby, D. R. Smith, and S. SchultzExperimental verification of a negative index of refractionScience20012927779

I. I. Smolyaninov, Y. J. Hung, and C. C. DavisMagnifying superlens in the visible frequency rangeScience200731516991701

J. B. Pendry, D. Schurig, and D. R. SmithControlling electromagnetic fieldsScience200631217801782

N. I. Landy, S. Sajuyigbe, J. J. Mock, D. R. Smith, and W. J. PadillaPerfect metamaterial absorberPhys. Rev. Lett.2008100207402

S. J. Park, J. T. Hong, S. J. Choi, H. S. Kim, W. K. Park, S. T. Han, J. Y. Park, S. Lee, D. S. Kim, and Y. H. AhnDetection of microorganisms using terahertz metamaterialsSci. Rep.201444988

S. J. Park, S. H. Cha, G. A. Shin, and Y. H. AhnSensing viruses using terahertz nano-gap metamaterials,Biomed. Opt. Express2017835513558

H. T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. AverittActive terahertz metamaterial devicesNature2006444597600

J. F. O’Hara, R. Singh, I. Brener, E. Smirnova, J. Han, A. J. Taylor, and W. ZhangThin-film sensing with planar terahertz metamaterials: Sensitivity and limitationsOpt. Express20081617861795

J. Federici and L. MoelleReview of terahertz and subterahertz wireless communicationsJ. Appl. Phys.2010107111101

W. Cao, R. Singh, I. A. I. Al-Naib, M. He, A. J. Taylor, and W. ZhangLow-loss ultra-high-Q dark mode plasmonic Fano metamaterialsOpt. Lett.20123733663368

J. D. Baena, J. Bonache, F. Martín, R. M. Sillero, F. Falcone, T. Lopetegi, M. A. G. Laso, J. García-García, I. Gil, M. F. Portillo, and M. SorollaEquivalent-circuit models for split-ring resonators and complementary split-ring resonators coupled to planar transmission linesIEEE Trans. Microw. Theory Tech20055314511461

S. J. Park, B. H. Son, S. J. Choi, H. S. Kim, and Y. H. AhnSensitive detection of yeast using terahertz slot antennasOpt. Express2014223046730472

S. J. Park, S. A. N. Yoon, and Y. H. AhnDielectric constant measurements of thin films and liquids using terahertz metamaterialsRSC Adv.201666938169386

J. T. Hong, D. J. Park, J. H. Yim, J. K. Park, J. Y. Park, S. Lee, and Y. H. AhnDielectric constant engineering of single-walled carbon nanotube films for metamaterials and plasmonic devicesJ. Phys. Chem. Lett.2013439503957

J. T. Hong, S. W. Jun, S. H. Cha, J. Y. Park, S. Lee, G. A. Shin, and Y. H. AhnEnhanced sensitivity in THz plasmonic sensors with silver nanowiresSci. Rep.2018815536

S. J. Park, S. A. N. Yoon, and Y. H. AhnEffective sensing volume of terahertz metamaterial with various gap widthsJ. Opt. Soc. Korea201620628632

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov, and X. ZhangTerahertz magnetic response from artificial materialsScience200430314941496

M. A. Seo, H. R. Park, S. M. Koo, D. J. Park, J. H. Kang, O. K. Suwal, S. S. Choi, P. C. M. Planken, G. S. Park, N. K. Park, Q. H. Park, and D. S. KimTerahertz field enhancement by a metallic nano slit operating beyond the skin-depth limitNat. Photonics20093152156

Y. T. Chang, Y. C. Lai, C. T. Li, C. K. Chen, and T. J. YenA multi-functional plasmonic biosensorOpt. Express20101895619569

A. Berrier, P. Albella, M. Ameen Poyli, R. Ulbricht, M. Bonn, J. Aizpurua, and J. G. RivasDetection of deep-subwavelength dielectric layers at terahertz frequencies using semiconductor plasmonic resonatorsOpt. Express20122050525060

T. Chen, S. Li, and H. SunMetamaterials application in sensingSensors20121227422765

K. Colville, N. Tompkins, A. D. Rutenberg, and M. H. JerichoEffects of poly (L-lysine) substrates on attached escherichia coli bacteriaLangmuir20102626392644

P. Laurino, R. Kikkeri, N. Azzouz, and P. H. SeebergerDetection of bacteria using glyco-dendronized polylysine prepared by continuous flow photofunctionalizationNano Lett.2011117378

S. J. Park, A. R. Kim, J. T. Hong, J. Y. Park, S. Lee, and Y. H. AhnCrystallization kinetics of lead halide perovskite film monitored by in situ terahertz spectroscopyJ. Phys. Chem. Lett.20178401406

H. S. Kim, S. H. Cha, B. Roy, S. H. Kim, and Y. H. AhnHumidity sensing using THz metamaterial with silk protein fibroinOpt. Express2018263357533581

D. J. Park, J. T. Hong, J. K. Park, S. B. Choi, B. H. Son, F. Rotermund, S. Lee, K. J. Ahn, D. S. Kim, and Y. H. AhnResonant transmission of terahertz waves through metallic slot antennas on various dielectric substratesCurr. Appl. Phys.201313753757

D. J. Park, S. J. Park, I. Park, and Y. H. AhnDielectric substrate effect on the metamaterial resonances in terahertz frequency rangeCurr. Appl. Phys.201414570574

G. Zhao, M. T. Mors, T. Wenckebach, and P. C. M. PlankenTerahertz dielectric properties of polystyrene foamJ. Opt. Soc. Am. B20021914761479

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