A multiband perfect absorber based on hyperbolic metamaterials

Sreekanth, Kandammathe Valiyaveedu; ElKabbash, Mohamed; Alapan, Yunus; Rashed, Alireza R.; Gürkan, Umut A.; Strangi, Giuseppe

doi:10.1038/srep26272

Cited by 91 publications

(55 citation statements)

References 38 publications

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“…The excitation of BPP modes at different excitation wavelengths in each BPP mode band are shown in Figure 4. A decrease in coupling angle variation with a maximum for the shorter wavelength band and a minimum for the longer wavelength band are observed when the excitation wavelength in each BPP mode band is increased [21]. …”

Section: Excitation Of High Q-factor Bulk Plasmon Modesmentioning

confidence: 93%

Hyperbolic metamaterials-based plasmonic biosensor for fluid biopsy with single molecule sensitivity

Sreekanth

ElKabbash

Alapan

et al. 2017

EPJ Applied Metamaterials

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-Plasmonic sensors are one of the most powerful optical biosensors, which can be used for the detection of small numbers of molecules at ultra-low concentrations. However, the detection of dilute analytes of low molecular weight (<500 Da) is still a challenging task using currently available plasmonic biosensors. Here, we demonstrate the detection of both lower and heavier molecular weight biomolecules close to single molecule level using a novel plasmonic biosensor platform based on hyperbolic metamaterials. We show experimentally the extraordinary spectral and angular sensitivities of the biosensor platform, from visible to near infrared (NIR) wavelengths, by exciting the bulk plasmon polaritons associated with hyperbolic metamaterials.

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Section: Excitation Of High Q-factor Bulk Plasmon Modesmentioning

confidence: 93%

Hyperbolic metamaterials-based plasmonic biosensor for fluid biopsy with single molecule sensitivity

Sreekanth

ElKabbash

Alapan

et al. 2017

EPJ Applied Metamaterials

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“…This feature can be explained that the LSPR is enhanced with the decrease of distance between gold nanobars and gold film. The dielectric spacer with a thickness about 10 nm can be manufactured with standard fabrication techniques [41]. The FWHM and reflectivity dip of the reflection curve depend strongly on the coupling strength between the nanobars and the gold film.…”

Section: Resultsmentioning

confidence: 99%

Infrared Perfect Ultra-narrow Band Absorber as Plasmonic Sensor

Liu

et al. 2016

Nanoscale Res Lett

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We propose and numerically investigate a novel perfect ultra-narrow band absorber based on a metal-dielectric-metal-dielectric-metal periodic structure working at near-infrared region, which consists of a dielectric layer sandwiched by a metallic nanobar array and a thin gold film over a dielectric layer supported by a metallic film. The absorption efficiency and ultra-narrow band of the absorber are about 98 % and 0.5 nm, respectively. The high absorption is contributed to localized surface plasmon resonance, which can be influenced by the structure parameters and the refractive index of dielectric layer. Importantly, the ultra-narrow band absorber shows an excellent sensing performance with a high sensitivity of 2400 nm/RIU and an ultra-high figure of merit of 4800. The FOM of refractive index sensor is significantly improved, compared with any previously reported plasmonic sensor. The influences of structure parameters on the sensing performance are also investigated, which will have a great guiding role to design high-performance refractive index sensors. The designed structure has huge potential in sensing application.

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“…In recent years, the development of artificial metamaterials have provided lots of novel functionalities, such as negative refraction1234, perfect focusing5, cloaking678, absorbers910 and sensing1112. Metamaterials can be implemented by periodic arrays of sub-wavelength resonators, for example, the split-ring resonators (SRRs)13.…”

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confidence: 99%

Hybrid three-dimensional dual- and broadband optically tunable terahertz metamaterials

Meng

Zhong

Zhang

2017

Sci Rep

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The optically tunable properties of the hybrid three-dimensional (3D) metamaterials with dual- and broadband response frequencies are theoretically investigated in the terahertz spectrum. The planar double-split-ring resonators (DSRRs) and the standup double-split-ring resonators are fabricated on a sapphire substrate, forming a 3D array structures. The bi-anisotropy of the hybrid 3D metamaterials is considered because the stand-up DSRRs are not symmetrical with respect to the electric field vector. Due to the electric and magnetic response realized by the planar and the standup double-split-ring resonators respectively, the dual-band resonance response and the negative refractive index can be achieved. The potential of the phase modulation under photoexcitation is also demonstrated. Further analysis indicates that, photoexcitation of free carriers in the silicon within the capacitive region of the standup DSRRs results in a broad resonance response bandwidth (about 0.47 THz), and also functions as a broadband negative refractive index that roughly lies between 0.80 and 2.01 THz. This tunable metamaterials is proposed for the potential application of electromagnetic wave propagation in terahertz area.

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A multiband perfect absorber based on hyperbolic metamaterials

Cited by 91 publications

References 38 publications

Hyperbolic metamaterials-based plasmonic biosensor for fluid biopsy with single molecule sensitivity

Hyperbolic metamaterials-based plasmonic biosensor for fluid biopsy with single molecule sensitivity

Infrared Perfect Ultra-narrow Band Absorber as Plasmonic Sensor

Hybrid three-dimensional dual- and broadband optically tunable terahertz metamaterials

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