Concentric tubes silicon-based metamaterial structure for mid-IR broadband absorption

Abouelatta, Mahmoud A. A.; Othman, Muhammad A.; Desouky, Mai; Mahmoud, Ahmed M.; Swillam, Mohamed A.

doi:10.1364/oe.441105

Cited by 16 publications

(11 citation statements)

References 20 publications

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“…Surface Plasmon Polariton (SPP) resonant sensors have been extensively used, especially for sensing applications at the nanoscale. The dispersion of the (SPP) is controlled by the characteristics of a limited set of appropriate metals and cannot be adjusted arbitrarily 1,2 . The large absorption losses at optical frequencies result in the damping of SPPs on metals and resonance broadening.…”

Section: Introductionmentioning

confidence: 99%

High sensitivity meta-surface plasmonic sensor

Mahmoud,

Maher,

Ghanim

et al. 2024

Silicon Photonics XIX

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Surface Plasmon Polariton resonant sensors (SPPs) have found wide-ranging applications, particularly for nanoscale sensing. The SPP dispersion is determined by the properties of a limited number of suitable metals and cannot be arbitrarily tuned. The proposed gas sensor is based on surface plasmon polariton manipulated in the metamaterial surface. The plasmonic sensor utilizes a metal-air interface to detect and analyze various substances and phenomena in the mid-infrared range. The utilization of the Mid-infrared (MIR) wavelength range offers numerous benefits across a wide range of applications, including chemical and biological detection. This paper introduces a metasurface composed of highly doped silicon that demonstrates a plasmonic effect in the mid-infrared wavelength range. Silicon has several benefits, including compatibility with CMOS technology and easy manufacturing utilizing traditional silicon fabrication techniques. In addition, operating in the mid-infrared (mid-IR) range and using doped silicon material enables the development of integrated plasmonic devices at the microscale. In this paper, a meta surface plasmonic grating is proposed for sensing and detecting the refractive index changes. In order to test the performance of the plasmonic sensor, a commercial Lumerical software based on finite difference time domain (FDTD) has been used. The suggested design shows high sensitivity at λ = 13.9807 μm and it can be used for gas sensing applications.

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Section: Introductionmentioning

confidence: 99%

High sensitivity meta-surface plasmonic sensor

Mahmoud,

Maher,

Ghanim

et al. 2024

Silicon Photonics XIX

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“…One of the approaches is using structures having multiple resonators to couple different absorption peaks; however, these structures have large fingerprints due to incorporating several components [1 -3]. Furthermore, other structures with high absorption were proposed based on metallic plasmonics [4][5][6][7], Silicon nanowires, and porous silicon; but they have some drawbacks such as instability, high cost, and high thickness [8,9].…”

Section: Introductionmentioning

confidence: 99%

Silicon-based, fractal metamaterial structure for IR broadband absorption

Mahmoud

Ghanim

Othman

et al. 2023

Silicon Photonics XVIII

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Over a century ago, the study of blackbody radiation led to the development of quantum mechanics. A blackbody is a perfect absorber, absorbing all the electromagnetic light that illuminates it. There is no radiation passing through it, and none is reflected. Now, "bodies" with high absorption qualities are very important in many disciplines of research and technology. Perfect absorbers, for example, can be utilized as photodetectors, thermal pictures, microbolometers, an d thermal photovoltaic solar energy conversion. The Mid-infrared (MIR) wavelength spectrum has numerous advantages in a variety of applications. One of these uses is chemical and biological detection. In this paper, a metasurface mid -IR absorber based on the fractal technology of a doped silicon geometry resonator to realize wideband cross-fractal formation is introduced. The structure exhibits a broadband absorption within a wide range of IR wavelength spectrum extending from 3 to 9 μm. The structure was based on the Sierpinski carpet where different building blocks were simulated to reach the highest absorption. It is shown that light coupling over a broad wavelength range to the proposed fractal metamaterial absorber structure is due to multiple resonance mechanisms at different wavelengths. The propo sed structure is CMOS-compatible. Moreover, this proposed design opens the door to the development of new silicon -based absorbers for different applications such as energy harvesting and photodetection.

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“…Metamaterials are synthetic composite materials with extra ordinary optical properties not usually found in nature [15]. Metamaterial paved the way for numerous applications such as optical sensors [16], super focusing [17] and energy harvesting [18]. Metasurfaces (MS) are special class of metamaterial that is composed of engineered subwavelength nanoresonators [15], [16], [19]- [21].…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive biosensor using a Fano resonant asymmetric all-dielectric metasurface

et al. 2023

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Fano resonance is a universal phenomenon that has been widely exploited to achieve spectrally sharp resonances for a variety of applications. Recently, all dielectric metasurface design composed of two silicon resonators, nanodisk and nanobar, exhibits an induced transparency window with ultrahigh quality factor in polarization direction along the nanobar long axis relying on the intriguing physics of Fano resonance. However, the design demonstrates a dispersive behavior within a short spectral range, a phenomenon that hinders its practical usage as a Biosensor due to the lack of the spectral selectivity. In this work, we report the tunable design along the range of wavelengths from 1.2 𝜇m to 1.75 𝜇m through changing the radius of the nanodisk from 200nm to 350nm. Although the design demonstrates a spectral red shift of the reflection with increasing the nanodisk radius, the reflectance behavior is inconsistent indicating the formation of transparency windows in most cases. Worthwhile, the structure design of radius (r=300nm) enables attaining a single sharp Fano resonance addressing the aforementioned short range dispersion obstacle. Meanwhile, the optimized design of radius of (r=300nm) provides a significant quality factor of (~808) and ultrahigh sensitivity of (275nm/RIU) with a figure-ofmerit of (148) at the operating wavelength of (𝜆=1.583𝜇m). The proposed design demonstrates a tremendous impact in refractometric biosensing applications due to its high performance and the ease of fabrication.

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Concentric tubes silicon-based metamaterial structure for mid-IR broadband absorption

Cited by 16 publications

References 20 publications

High sensitivity meta-surface plasmonic sensor

High sensitivity meta-surface plasmonic sensor

Silicon-based, fractal metamaterial structure for IR broadband absorption

Ultrasensitive biosensor using a Fano resonant asymmetric all-dielectric metasurface

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