Optical Sensing Using Dark Mode Excitation in an Asymmetric Dimer Metamaterial

Omaghali, N. E. J.; Ткаченко, В. М.; Andreone, A.; Abbate, Giancarlo

doi:10.3390/s140100272

Cited by 43 publications

(28 citation statements)

References 32 publications

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“…FOM values for the modes 1-4 are 87.88, 63.41, 86.78, and 65.31, respectively. These FOM values are very bigger in comparison with previously numerical simulation reports [22][23][24][25][26][27]. Because the upper and lower nanodisk working independently, we can fill different materials in the upper nanodisk and the lower nanodisk for multiparameter sensing in complicated environments.…”

Section: Sensing Characteristicsmentioning

confidence: 41%

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A multifunction filter based on plasmonic waveguide with double-nanodisk-shaped resonators

Cao

2016

Optik

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Section: Sensing Characteristicsmentioning

confidence: 41%

“…To compare the performance of different spectroscopic sensor, the figure of merit (FOM) appears to be a more effective parameter. FOM is defined as the sensitivity divided by the bandwidth of resonance [a full width at half-maximum (FWHM)] [22]. FOM values for the modes 1-4 are 87.88, 63.41, 86.78, and 65.31, respectively.…”

Section: Sensing Characteristicsmentioning

confidence: 99%

A multifunction filter based on plasmonic waveguide with double-nanodisk-shaped resonators

Cao

2016

Optik

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“…For resonance II, we can infer the presence of an allowed magnetic dipole moment induced in the loops formed by the capacitance between the coupled strips of two adjacent "meta-atoms," as illustrated by the blue dashed line. 33 As already reported in previous studies, 9,10,34 the interaction between the two "bright atoms" (or we treat the weakly coupling to the incident field as the so-called dark mode) of which gives rise to the sharp asymmetric Fanotype profile of the resonance with a characteristic dip and peak as shown in Figs. 4 and 5.…”

Section: Design Measurement and Discussionmentioning

confidence: 87%

Tailoring dual-band electromagnetically induced transparency in planar metamaterials

Yang

Han

et al. 2015

Journal of Applied Physics

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Articles you may be interested inActively bias-controlled metamaterial to mimic and modulate electromagnetically induced transparency Appl. Phys. Lett. 104, 261902 (2014); 10.1063/1.4886148Band split in multiband all-dielectric left-handed metamaterials Ultra-broadband electromagnetically induced transparency using tunable self-asymmetric planar metamaterials J.The transmission characteristics of a planar metamaterial, composed of two finite metal strips (with different length) and one double split-ring resonator, have been numerically and experimentally investigated in this paper. By varying the length of the two strips slightly, this structure can exhibit single-band and dual-band electromagnetically induced transparency (EIT)-like spectral response in microwave region. The dark mode can be excited because of the length difference of the two metal strips, which can lead to a very asymmetric Fano-like resonance or gradually EIT-like profile in transmission. So the dual-band EIT-like physical mechanism is characterized by two bright-dark coupling modes. Our work provides a way to obtain multiple EIT-like effect, and it may achieve potential applications in a variety of fields including filters, sensing, and some other microwave devices. V C 2015 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4906853] 043107-2 Hu et al.

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“…On the other hand, Fano resonance based on far field interference is adaptive to the substrate etching since it does not depend on near field coupling [24]. Therefore, in this study, we chose the Fano resonance based on the far field interference using asymmetric double bar (ADB) metamaterials [25][26][27]. The ADB is composed of two gold bars with slightly different bar lengths as shown in Fig.…”

Section: Improving Refractive Index Sensitivitymentioning

confidence: 99%

Impact of substrate etching on plasmonic elements and metamaterials: preventing red shift and improving refractive index sensitivity

Moritake

Tanaka

2018

Opt. Express

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We propose and demonstrate the elimination of substrate influence on plasmon resonance by using selective and isotropic etching of substrates. Preventing the red shift of the resonance due to substrates and improving refractive index sensitivity were experimentally demonstrated by using plasmonic nanostructures fabricated on silicon substrates. Applying substrate etching decreases the effective refractive index around the metal nanostructures, resulting in elimination of the red shift. Improvement of sensitivity to the refractive index environment was demonstrated by using plasmonic metamaterials with Fano resonance based on far field interference. Change in quality factors (Q-factors) of the Fano resonance by substrate etching was also investigated in detail. The presence of a closely positioned substrate distorts the electric field distribution and degrades the Q-factors. Substrate etching dramatically increased the refractive index sensitivity reaching to 1532 nm/RIU since the electric fields under the nanostructures became accessible through substrate etching. The FOM was improved compared to the case without the substrate etching. The method presented in this paper is applicable to a variety of plasmonic structures to eliminate the influence of substrates for realizing high performance plasmonic devices.

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Optical Sensing Using Dark Mode Excitation in an Asymmetric Dimer Metamaterial

Cited by 43 publications

References 32 publications

A multifunction filter based on plasmonic waveguide with double-nanodisk-shaped resonators

A multifunction filter based on plasmonic waveguide with double-nanodisk-shaped resonators

Tailoring dual-band electromagnetically induced transparency in planar metamaterials

Impact of substrate etching on plasmonic elements and metamaterials: preventing red shift and improving refractive index sensitivity

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