Extraordinary Transmission of Three-Dimensional Crescent-like Holes Arrays

Shen, Yang; Liu, Mingkai; Li, Jensen; Chen, Xia; Xu, Huailiang; Zhu, Qiangzhong; Jin, Can

doi:10.1007/s11468-011-9297-1

Cited by 16 publications

(7 citation statements)

References 41 publications

(30 reference statements)

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“…They achieved around 30% transmittance through MNSA. The response of periodic subwavelength plasmonic structures for incoming radiation in reflection or transmission mode depends on geometrical parameters of the structure such as period, size, shape, and surface roughness [ 62 – 65 ]. It was both experimentally and theoretically demonstrated that by tuning the geometrical parameters of periodic grating structure, it is possible to excite various types of cavity modes or even higher order of plasmonic modes with varying sensor sensitivity [ 66 ].…”

Section: Introductionmentioning

confidence: 99%

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Verma

Srivastava

2021

Plasmonics

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In the present study, we report giant extra-ordinary transmission of near infrared (NIR) light, more than 90%, through a seemingly opaque plasmonic metasurface, which consists of two metal nano-slits arrays (MNSAs) with alternate opening arrangements. By using perfect coupling of the plasmonic modes formed between the sharp edges of the upper and lower MNSAs of silver, a giant, wavelength selective transmission could be obtained. The study is accompanied by optimization of electromagnetic (EM) field coupling for different interlayer spacings and lateral overlap between the two MNSAs to understand their significance in light transmission through the metasurface. The interlayer spacing between the MNSAs works as the transmitting channel for light. The optimization of performance with different fill factors and plasmonic metals was performed as well. Because of the excitation of extended surface plasmons (ESPs) generated at both the MNSAs, the metasurface can be used for refractive index (RI) sensing as one of its applications by using a transparent and flexible polymer, such as polydimethylsiloxane (PDMS), as substrate. The maximum sensitivity which could be achieved for the optimal configuration of the metasurface was 1435.71 nm/RIU, with a figure of merit (FOM) of 80 RIU −1 for 90.45% optical transmission of light for the refractive index variation of analyte medium from 1.33 to 1.38 RIU. The present study strengthens the concept of light funneling through subwavelength structures due to plasmons, which are responsible for light transmission through this seemingly opaque metasurface and finds use in highly sensitive, flexible, and cost-effective EOT-based sensors.

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Section: Introductionmentioning

confidence: 99%

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Verma

Srivastava

2021

Plasmonics

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show abstract

“…They achieved around 30% transmittance through MNSA. The response of periodic subwavelength plasmonic structures for incoming radiation in reflection or transmission mode depends on geometrical parameters of the structure such as period, size, shape, and surface roughness [62][63][64][65]. It was both experimentally and theoretically demonstrated that by tuning the geometrical parameter of periodic grating structure, it is possible to excite various types of cavity modes or even higher order of plasmonic modes with varying sensor sensitivity [66].…”

Section: Introductionmentioning

confidence: 99%

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Verma

Srivastava

2021

Preprint

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In the present study, we report giant extra-ordinary transmission of near infra-red (NIR) light, more than 90%, through a seemingly opaque plasmonic metasurface, which consists of two metal nano-slits arrays (MNSAs) with alternate opening arrangements. By using perfect coupling of the plasmonic modes formed between the sharp edges of the upper and lower MNSAs of silver, a giant, wavelength selective transmission could be obtained. The study is accompanied by optimization of electromagnetic (EM) field coupling for different interlayer spacings and lateral overlap between the two MNSAs to understand their significance in light transmission through the metasurface. The interlayer spacing between the MNSAs works as the transmitting channel for light. The optimization of performance with different fill factors and plasmonic metals was performed as well. Because of the excitation of extended surface plasmons (ESPs) generated at both the MNSAs, the metasurface can be used for refractive index (RI) sensing as one of its applications by using a transparent and flexible polymer, such as polydimethylsiloxane (PDMS), as substrate. The maximum sensitivity which could be achieved for the optimal configuration of the metasurface was 1435.71 nm/RIU, with a figure of merit (FOM) of 80 RIU− 1 for 90.45% optical transmission of light for the refractive index variation of analyte medium from 1.33 to 1.38 RIU. The present study strengthens the concept of light funneling through subwavelength structures due to plasmons, which are responsible for light transmission through this seemingly opaque metasurface and finds use in highly sensitive, flexible, and cost effective EOT based sensors.

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“…This effect leads to field amplification both inside and outside (in the near-field zone) the metal nanoparticles. These resonances, which may be used in optical sensing, generally depend on the type of metal, the shape of nanoparticles and the dielectric environment within the electromagnetic near field [2][3][4][5][6][7]. Nanoparticles are also used to constitute a subwavelength waveguide.…”

Section: Introductionmentioning

confidence: 99%

Control of the stability and soliton formation of dipole moments in a nonlinear plasmonic finite nanoparticle array

Zhu

et al. 2015

Photonics and Nanostructures - Fundamentals and Applications

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We perform numerical analysis of a finite nanoparticle array, in which the transversal dipolar polarizations are excited by a homogenous optical field. Considering the linearly long-range dipole-dipole interaction and the cubic dipole nonlinearity of particle, the characteristics of stability of a finite number nanoparticle array should be revised, compared with that of an infinite number nanoparticle array. A critical point in the low branch of the bistable curve is found, beyond which the low branch becomes unstable for a finite number of nanoparticles. The influence of the external field intensities and detuning frequencies on this critical point are investigated in detail. When the total number of particles approaches infinity, our results become similar to that of an infinity number particle system [32]. Notably, with appropriate external optical field, a dark dipole soliton is formed. Moreover, when the scaled detuning is set to an appropriate value, a double monopole dark soliton (DMDS) consisting of two particles is formed. The DMDS may have potential applications in the subwavelength highly precise detection because of its very small width.

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Extraordinary Transmission of Three-Dimensional Crescent-like Holes Arrays

Cited by 16 publications

References 41 publications

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Control of the stability and soliton formation of dipole moments in a nonlinear plasmonic finite nanoparticle array

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