How Holes Can Obscure the View: Suppressed Transmission through an Ultrathin Metal Film by a Subwavelength Hole Array

Braun, Julia; Gompf, Bruno; Kobiela, Georg; Dressel, Martin

doi:10.1103/physrevlett.103.203901

Cited by 152 publications

(130 citation statements)

References 24 publications

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“…[ 122 ] The fi rst experimental demonstration of this was shown using an array of gold SHAs; it was suggested that the suppressed transmissivity, and hence enhanced absorptivity, is due to the short range surface plasmon excitation. [ 123 ] Many other numerical studies on the absorption properties of SHA's followed. [124][125][126][127] One such study elaborates on the standard SHA design by integrating rectangular holes of different orientations, i.e.…”

Section: Subwavelength Hole Arraysmentioning

confidence: 99%

“…[ 129 ] Like other studies, [ 128 , 130 ] this group notes that their absorption mechanism is due to a combination of the surface plasmon resonance and the cavity resonance seen in waveguides. [ 129 ] One of the fi rst experimental demonstrations of a MPA in the visible realm since the fi rst preliminary studies on suppressed transmissivity using SHA's [ 123 ] was achieved utilizing a modifi ed grating structure. [ 47 ] The design, displayed in Figure 5 n, achieves not only high absorptivity, but it also achieves an average broadband absorptivity of 71% over a large portion of the visible spectrum (400 nm-700 nm, as shown in Figure 5 m).…”

Section: Gratingsmentioning

confidence: 99%

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Metamaterial Electromagnetic Wave Absorbers

2012

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The advent of negative index materials has spawned extensive research into metamaterials over the past decade. Metamaterials are attractive not only for their exotic electromagnetic properties, but also their promise for applications. A particular branch–the metamaterial perfect absorber (MPA)–has garnered interest due to the fact that it can achieve unity absorptivity of electromagnetic waves. Since its first experimental demonstration in 2008, the MPA has progressed significantly with designs shown across the electromagnetic spectrum, from microwave to optical. In this Progress Report we give an overview of the field and discuss a selection of examples and related applications. The ability of the MPA to exhibit extreme performance flexibility will be discussed and the theory underlying their operation and limitations will be established. Insight is given into what we can expect from this rapidly expanding field and future challenges will be addressed.

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Section: Subwavelength Hole Arraysmentioning

confidence: 99%

Section: Gratingsmentioning

confidence: 99%

Metamaterial Electromagnetic Wave Absorbers

2012

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“…There have been many studies of geometries composed of a periodic array of slits [19][20][21][22][23][24] or grooves. 11,12,[25][26][27][28][29][30][31][32] There is also a substantial body of work concerning the enhanced transmission properties of arrays of holes [33][34][35][36][37][38][39][40][41][42] ͑also Ref. 43 and references therein͒.…”

Section: Introductionmentioning

confidence: 99%

Babinet’s principle and the band structure of surface waves on patterned metal arrays

Edmunds

Taylor

Hibbins

et al. 2010

Journal of Applied Physics

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The microwave response of an array of square metal patches and its complementary structure, an array of square holes, has been experimentally studied. The resonant phenomena, which yield either enhanced transmission or reflection, are attributed to the excitation of diffractively coupled surface waves. The band structure of these surface modes has been quantified for both p-͑transverse magnetic͒ and s-͑transverse electric͒ polarized radiation and is found to be dependent on the periodicity of the electric and magnetic fields on resonance. The results are in excellent accord with predictions from finite element method modeling and the electromagnetic form of Babinet's principle ͓Babinet, C. R. Acad. Sci. 4, 638 ͑1837͔͒.

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“…21,22 In metal films, the excitation of the SP modes had been experimentally and theoretically studied for periodic ultrathin structures ( 10 nm thick), both for arrays of slabs [23][24][25][26] and arrays of holes and disks. [27][28][29] It has been shown that these systems present transmission peaks with high visibility (including total suppression of reflection) and absorption resonances. The natural continuation of this research was to check whether this property could still hold for the 2D limit, i.e., for a layer of one-atom thickness.…”

mentioning

confidence: 99%

Surface plasmon enhanced absorption and suppressed transmission in periodic arrays of graphene ribbons

et al. 2012

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Resonance diffraction in the periodic array of graphene microribbons is theoretically studied following a recent experiment [L. Ju et al., Nature Nanotech. 6, 630 (2011)]. Systematic studies over a wide range of parameters are presented. It is shown that a much richer resonant picture would be observable for higher relaxation times of charge carriers: More resonances appear and transmission can be totally suppressed. The comparison with the absorption cross-section of a single ribbon shows that the resonant features of the periodic array are associated with leaky plasmonic modes. The longest-wavelength resonance provides the highest visibility of the transmission dip and has the strongest spectral shift and broadening with respect to the single-ribbon resonance, due to collective effects. The ability of graphene to support electromagnetic waves coupled to charge carriers [graphene surface plasmons (GSPs)] is very interesting from the point of view of many physical phenomena related to surface plasmons (SPs). 1,2 An additional interest is related to graphene's flexibility, sensitivity to external exposure, and two-dimensionality (2D) that have a variety of possible applications. 3,4 GSPs have been intensively studied theoretically, 5-11 in graphene sheets, and also in graphene ribbons, [12][13][14][15][16]18,19 p-n junctions, 20 and edges [15][16][17] and recently have been observed experimentally. 21,22 In metal films, the excitation of the SP modes had been experimentally and theoretically studied for periodic ultrathin structures ( 10 nm thick), both for arrays of slabs [23][24][25][26] and arrays of holes and disks. [27][28][29] It has been shown that these systems present transmission peaks with high visibility (including total suppression of reflection) and absorption resonances. The natural continuation of this research was to check whether this property could still hold for the 2D limit, i.e., for a layer of one-atom thickness. Recently, experiments have shown that GSP resonances in a periodic array of graphene ribbons (PAGR) have remarkably large oscillator strengths, resulting in prominent room-temperature optical absorption peaks. 21 In this Rapid Communication we present a theoretical study of the electromagnetic response of PAGRs, including absorption, transmission, and reflection coefficients. We consider both the parameters corresponding to the experiment and their variation over a wide range. Specifically, we focus on the dependencies upon the relaxation times of charge carriers τ and the width-to-period ratio (which in the experiment was fixed to be 1/2). We look for the configurations in which GSP-induced absorption is enhanced and where other GSP-assisted effects are much more pronounced. Our analysis can thus be used for further efficient observation of GSPs and their use for applications, e.g., ultrathin voltage-controllable THz absorbers. Figure 1 schematically represents the periodic array of graphene ribbons under study. The PAGR is located at z = 0 and is illuminated by a normal-incident ...

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How Holes Can Obscure the View: Suppressed Transmission through an Ultrathin Metal Film by a Subwavelength Hole Array

Cited by 152 publications

References 24 publications

Metamaterial Electromagnetic Wave Absorbers

Metamaterial Electromagnetic Wave Absorbers

Babinet’s principle and the band structure of surface waves on patterned metal arrays

Surface plasmon enhanced absorption and suppressed transmission in periodic arrays of graphene ribbons

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