Tunable broadband plasmonic perfect absorber at visible frequency

Hedayati, Mehdi Keshavarz; Faupel, Franz; Elbahri, Mady

doi:10.1007/s00339-012-7344-1

Cited by 87 publications

(75 citation statements)

References 12 publications

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“…(Figure 5b reprinted with permission from [48]. Copyright 2011 Springer Science and Business Media); ( b ) Absorption spectra of a 20-nm Cu-PTFE nanocomposite sputter-deposited on a 100-nm copper film which has been coated with different thickness of spacer layer.…”

Section: Figurementioning

confidence: 99%

Review of Plasmonic Nanocomposite Metamaterial Absorber

2014

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Plasmonic metamaterials are artificial materials typically composed of noble metals in which the features of photonics and electronics are linked by coupling photons to conduction electrons of metal (known as surface _lasmon). These rationally designed structures have spurred interest noticeably since they demonstrate some fascinating properties which are unattainable with naturally occurring materials. Complete absorption of light is one of the recent exotic properties of plasmonic metamaterials which has broadened its application area considerably. This is realized by designing a medium whose impedance matches that of free space while being opaque. If such a medium is filled with some lossy medium, the resulting structure can absorb light totally in a sharp or broad frequency range. Although several types of metamaterials perfect absorber have been demonstrated so far, in the current paper we overview (and focus on) perfect absorbers based on nanocomposites where the total thickness is a few tens of nanometer and the absorption band is broad, tunable and insensitive to the angle of incidence. The nanocomposites consist of metal nanoparticles embedded in a dielectric matrix with a high filling factor close to the percolation threshold. The filling factor can be tailored by the vapor phase co-deposition of the metallic and dielectric components. In addition, novel wet chemical approaches are discussed which are bio-inspired or involve synthesis within levitating Leidenfrost drops, for instance. Moreover, theoretical considerations, optical properties, and potential application of perfect absorbers will be presented.

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Section: Figurementioning

confidence: 99%

Review of Plasmonic Nanocomposite Metamaterial Absorber

2014

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“…Approaches to enhance absorption based on fabrication of antireflection coatings [1,2], nanoholes [3][4][5], nanowires [6,7], nanocones [8,9] and other inhomogeneities [10] have been successfully studied and applied. In recent years, plasmonic metallic nanostructures are found to be an effective means as well [11][12][13][14][15][16][17][18]. The plasmonic nanostructures scatter incident light and increase the photon path length in the absorbed layer.…”

Section: Introductionmentioning

confidence: 99%

Ultra-thin broadband nanostructured insulator-metal-insulator-metal plasmonic light absorber

et al. 2015

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An ultra-thin nanostructured plasmonic light absorber with an insulator-metal-insulator-metal (IMIM) architecture is designed and numerically studied. The IMIM structure is capable to absorb up to about 82.5% of visible light in a broad wavelength range of 300-750 nm. The absorption by the bottom metal is only 6% of that of the top metal. The results show that the IMIM architecture has weak dependence of the angle of the incident light. Interestingly, by varying the top insulator material the optical absorption spectrum can be shifted more than 180 nm as compared to the conventional air-metal-insulator-metal structure. The IMIM structure can be applied for different plasmonic devices with improved performance.

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“…MPAs are greatly useful in capturing solar energy. [1,4] The other fascinating applications of these would include plasmonic sensing, bolometer, and wireless power transfer. [5][6][7][8][9][10] Metamaterial-based absorbers are of considerable interest among the electromagnetic RandD community because of their feasibility of arbitrary effective permittivity e eff x ð Þ and permeability l eff x ð Þ values achieved from the electromagnetic resonance *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of nanostructured subwavelength metamaterial absorber operating in the UV and visible spectral range

Baqir¹,

Ghasemi²,

Choudhury³

et al. 2015

Journal of Electromagnetic Waves and Applications

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2015): Design and analysis of nanostructured subwavelength metamaterial absorber operating in the UV and visible spectral range, Journal of Electromagnetic Waves and Applications,The design of broadband metamaterial perfect absorber (MPA) is proposed that operates in the ultraviolet and the visible regions of the electromagnetic spectrum. The MPA structure is of nanoscale in size and comprised of three layers -the U-shaped resonators (made of gold) of subwavelength size are embedded over a nanolayer of dielectric medium (silica glass), which is backed by a copper nanolayer surface. It is found that the proposed structure yields absorption peaks with the absorptivity over 99% in the aforesaid spectral range corresponding to both the transverse electric and the transverse magnetic polarizations of the incident electromagnetic wave. Furthermore, the angular dependence (of the incident light) of absorption characteristics is also analyzed along with the behavior of the absorber under varying thickness of nanosized resonators. It is expected that the proposed kind of perfect absorber would be highly useful in integrated heat-absorbing mediums that would include sensors, integrated photodetectors, thermal imaging, solar cells, etc.

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Tunable broadband plasmonic perfect absorber at visible frequency

Cited by 87 publications

References 12 publications

Review of Plasmonic Nanocomposite Metamaterial Absorber

Review of Plasmonic Nanocomposite Metamaterial Absorber

Ultra-thin broadband nanostructured insulator-metal-insulator-metal plasmonic light absorber

Design and analysis of nanostructured subwavelength metamaterial absorber operating in the UV and visible spectral range

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