A multiple mode integrated biosensor based on higher order Fano metamaterials

Yan, Xin; Zhang, Zhang; Liu, Liang; Yang, Maosheng; Wei, Dequan; Xia, Song; Zhang, Haiting; Lu, Yu‐Ying; Liu, Longhai; Zhang, Mengjin; Wang, Tao; Yao, Jianquan

doi:10.1039/c9nr07777d

Cited by 40 publications

(17 citation statements)

References 39 publications

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“…Equation () implies that the frequency of FOLM is directly associated with the refractive index of the substrate. It has been reported that both high Q factor and figure of merit (FOM) can be simultaneously obtained by coupling the FOLM to the eigenmodes of the metamaterials such as Lorentz resonances, electromagnetically induced transparency (EIT)‐type resonances, and Fano resonances, [ 46–51 ] which strongly enhances the resonant‐field confinement and reduces the radiative loss. Inspired by these works, coupling of lattice mode to the toroidal resonance may furnish a new route to design THz metasensors.…”

Section: Resultsmentioning

confidence: 99%

“…One of the direct applications demonstrated by metamaterials is about sensors operating at optical, infrared, and terahertz (THz) frequencies. [ 9,10,42–46 ] In general, a narrow line‐width metamaterial response with enough resonance intensity is essential for designing ultrasensitive metasensors. Although continued strides have been devoted to THz metasensors, most of the previous sensing performance was limited to only frequency sensitivity, which greatly restricts the freedom of THz detection.…”

Section: Introductionmentioning

confidence: 99%

“…Although continued strides have been devoted to THz metasensors, most of the previous sensing performance was limited to only frequency sensitivity, which greatly restricts the freedom of THz detection. [ 42–46 ] In addition, the substrates of the reported metasensors such as silicon, sapphire, and polyimide (PI), merely serve as a support of metallic structures, which also violates the philosophy for the future devices with integrated requirements. [ 9,10,42–46 ] Thus, to promote their practical applications with compatible techniques, there is a strong demand on design of THz metasensors that possess flexible sensing freedom, easy fabrication technique, and reliable detection performance.…”

Section: Introductionmentioning

confidence: 99%

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Dual‐Sensitivity Terahertz Metasensor Based on Lattice–Toroidal‐Coupled Resonance

Lou

Yang

Liang

et al. 2021

Advanced Photonics Research

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High quality factor resonance with extremely narrow line‐width offers an important platform for terahertz (THz) sensing technology as it enables strong light‐matter interaction between THz waves and analyte materials. Lattice mode arising from the collective Rayleigh scattering of metamaterial periodic structures has the ability to strongly confine the electromagnetic waves on the surface that fails to radiate to the far‐field. Herein, for the first time, a strategy is experimentally demonstrated to design THz metasensors, which exhibit dual‐sensitivity of frequency and resonance intensity by coupling the first‐order lattice mode to the toroidal resonance. The frequency sensitivity mainly results from the localized field confinement, whereas the sensitivity of resonance intensity depends on the matching degree between toroidal resonance and lattice mode. It is found that both the frequency shift and resonance intensity show exponential growth with the increase in the analyte thickness. In addition, the sensing performance between toroidal and toroidal–lattice modes is compared to verify the superiority of the dual‐sensitivity property. This work would greatly improve the practical applications of THz sensing technology and open up new opportunities for the realization of slow light devices, multiband narrow filters, and nonlinear systems.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dual‐Sensitivity Terahertz Metasensor Based on Lattice–Toroidal‐Coupled Resonance

Lou

Yang

Liang

et al. 2021

Advanced Photonics Research

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“…During the coupling process, the Fano resonance spectrum curve not only has obvious asymmetry and phase mutation, but it will also be sensitive to changes in structural parameters and the refractive index of the surrounding environment. Therefore, in recent years, high Q nanostructured devices based on Fano resonance have become a research hotspot in the fields of biochemical sensing, optical communication, on-chip photonics, and nonlinear optics [ 28 , 29 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

High Q-Factor Hybrid Metamaterial Waveguide Multi-Fano Resonance Sensor in the Visible Wavelength Range

et al. 2021

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We propose a high quality-factor (Q-factor) multi-Fano resonance hybrid metamaterial waveguide (HMW) sensor. By ingeniously designing a metal/dielectric hybrid waveguide structure, we can effectively tailor multi-Fano resonance peaks’ reflectance spectrum appearing in the visible wavelength range. In order to balance the high Q-factor and the best Fano resonance modulation depth, numerical calculation results demonstrated that the ultra-narrow linewidth resolution, the single-side quality factor, and Figure of Merit (FOM) can reach 1.7 nm, 690, and 236, respectively. Compared with the reported high Q-value (483) in the near-infrared band, an increase of 30% is achieved. Our proposed design may extend the application of Fano resonance in HMW from mid-infrared, terahertz band to visible band and have important research value in the fields of multi-wavelength non-labeled biosensing and slow light devices.

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“…Among these plasmonic resonances, the frequency shift of higher-order plasmonic resonances with high quality factors (Q-factor) is ultrasensitive to the geometrical shapes and the local dielectric environment [ 15 , 16 ]. Therefore, plasmonic metamaterial-based sensors are usually compact, portable and cost-effective, possessing great potential for detecting different kinds of chemicals as well as biomolecules in trace amounts [ 17 , 18 , 19 ]. The utilization of plasmonic metamaterial-based sensors with high efficiency and high Q-factors is the essential reason for developing an ultrahigh-sensitivity biosensor.…”

Section: Introductionmentioning

confidence: 99%

Terahertz Metamaterial with Multiple Resonances for Biosensing Application

et al. 2020

Nanomaterials

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A sickle-shaped metamaterial (SSM) based biochemical sensor with multiple resonances was investigated in the terahertz frequency range. The electromagnetic responses of SSM were found to be four resonances, namely dipolar, quadrupolar, octupolar and hexadecapolar plasmon resonances. They were generated from the interactions between SSM and perpendicularly incident terahertz waves. The sensing performances of SSM-based biochemical sensors were evaluated by changing ambient environments and analyte varieties. The highest values of sensitivity and figure of merit (FOM) for SSM covered with analyte thin-films were 471 GHz/RIU (refraction index unit) and 94 RIU−1, respectively. In order to further investigate the biosensing ability of the proposed SSM device, dielectric hemispheres and microfluidic chips were adopted to imitate dry and hydrous biological specimens, respectively. The results show that the sensing abilities of SSM-based biochemical sensors could be enhanced by increasing either the number of hemispheres or the channel width of the microfluidic chip. The highest sensitivity was 405 GHz/RIU for SSM integrated with microfluidic chips. Finally, three more realistic models were simulated to imitate real sensing situations, and the corresponding highest sensitivity was 502 GHz/RIU. The proposed SSM device paves the way to possible uses in biochemical sensing applications.

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A multiple mode integrated biosensor based on higher order Fano metamaterials

Abstract: A multiple mode integrated biosensor based on higher order Fano metamaterials (FRMMs) is proposed.

Cited by 40 publications

References 39 publications

Dual‐Sensitivity Terahertz Metasensor Based on Lattice–Toroidal‐Coupled Resonance

Dual‐Sensitivity Terahertz Metasensor Based on Lattice–Toroidal‐Coupled Resonance

High Q-Factor Hybrid Metamaterial Waveguide Multi-Fano Resonance Sensor in the Visible Wavelength Range

Terahertz Metamaterial with Multiple Resonances for Biosensing Application

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