Experimental Realization of a Metamaterial Detector Focal Plane Array

Shrekenhamer, David; Xu, Wangren; Venkatesh, Suresh; Schurig, David; Sonkusale, Sameer; Padilla, Willie J.

doi:10.1103/physrevlett.109.177401

Cited by 76 publications

(40 citation statements)

References 26 publications

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“…1(a).The element has been chosen as the face-to-face split ring resonator (SRR) pair that shares a same gap. 18,19 In our case, the element consists of a substrate layer backed by a metal ground, a combiner layer, a terminal that links to the RF combining network, and a current channel passing through the substrate and combiner layers and connecting between top metallic inclusions and the terminal in bottom surface of the combiner layer. The system is designed to operate at 2.45GHz and the dimensions of the element are: a=15.5mm, l=13.5mm, w1 =0.8mm, w2 =1.8mm, w3=2.0mm, g=3.0mm, as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Some new types of electrically small energy collectors have been introduced, such as the ground-backed complementary split ring resonators (G-SRRs), 15,16 the wideband G-SRRs based on bow-tie cavities, 17 and the face-to-face split ring resonators. 18,19 It has been shown that, in contrast with a single resonator, an array of resonators with close proximity of each other can enhance the power harvesting efficiency. 16 Furthermore, it has been shown that electrically small resonators in an array form provide wider frequency bandwidth in comparison with conventional antennas.…”

Section: Introductionmentioning

confidence: 99%

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Design of an effective energy receiving adapter for microwave wireless power transmission application

Wang

Geyi

2016

AIP Advances

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In this paper, we demonstrate the viability of an energy receiving adapter in a 8×8 array form with high power reception efficiency with the resonator of artificial electromagnetic absorber being used as the element. Unlike the conventional reported rectifying antenna resonators, both the size of the element and the separations between the elements are electrically small in our design. The energy collecting process is explained with an equivalent circuit model, and a RF combining network is designed to combine the captured AC power from each element to one main terminal for AC-to-DC conversion. The energy receiving adapter yields a total reception efficiency of 67% (including the wave capture efficiency of 86% and the AC-to-DC conversion efficiency of 78%), which is quite promising for microwave wireless power transmission.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of an effective energy receiving adapter for microwave wireless power transmission application

Wang

Geyi

2016

AIP Advances

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“…Impedance matching only occurs for a narrow bandwidth, dependent on the MM configuration. By scaling the array period, ERR geometry and insulating layer thickness between the ERR and the ground plane MM absorbers can operate from the IR [26] to the microwave regimes [27]. MM based absorption is inherently narrowband however it is possible to produce a dual band response by adding a second ERR [28] or illicit a broadband response by stacking ERRs on top of one another [29].…”

Section: Introductionmentioning

confidence: 99%

“…The periodic nature of MM absorbers lends itself to coupling with micro-bolometer sensing elements to form a focal plane array (FPA). MM based FPAs have been developed in both the S band (2-4 GHz) [27] and at THz frequencies (2.5 THz) where the MM absorbers were monolithically integrated into a standard 0.35 μm CMOS process and the vanadium oxide microbolometer sensors deposited on top [30,31].…”

Section: Introductionmentioning

confidence: 99%

Multi-spectral materials: hybridisation of optical plasmonic filters, a mid infrared metamaterial absorber and a terahertz metamaterial absorber

2016

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Multi-spectral imaging systems typically require the cumbersome integration of disparate filtering materials and detectors in order to operate simultaneously in multiple spectral regions. Each distinct waveband must be detected at different spatial locations on a single chip or by separate chips optimised for each band. Here, we report on a single component that optically multiplexes visible, Mid Infrared (4.5 μm) and Terahertz (126 μm) radiation thereby maximising the spectral information density. We hybridise plasmonic and metamaterial structures to form a device capable of simultaneously filtering 15 visible wavelengths and absorbing Mid Infrared and Terahertz. Our synthetic multi-spectral component could be integrated with silicon complementary metal-oxide semiconductor technology where Si photodiodes are available to detect the visible radiation and micro-bolometers available to detect the Infrared/Terahertz and render an inexpensive, mass-producible camera capable of forming coaxial visible, Infrared and Terahertz images.

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“…The periodic nature of MM absorbers lends itself to coupling with microbolometer sensing elements to form a focal plane array (FPA). Such an 11 × 11 MM-based FPA operating in the S band (2-4 GHz) has been presented [18] whereby the associated read-out electronics are discrete and implemented on a printed circuit board. At THz frequencies, where the MM array dimensions are smaller, the potential of MM absorbers for THz imaging applications has been demonstrated via the monolithic integration of MM absorbers into a standard foundry CMOS process and subsequent post deposition of vanadium oxide microbolometer sensor elements [19].…”

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confidence: 99%

Multispectral metamaterial absorber

Grant

McCrindle

et al. 2014

Opt. Lett.

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We present the simulation, implementation, and measurement of a multispectral metamaterial absorber (MSMMA) and show that we can realize a simple absorber structure that operates in the mid-IR and terahertz (THz) bands. By embedding an IR metamaterial absorber layer into a standard THz metamaterial absorber stack, a narrowband resonance is induced at a wavelength of 4.3 μm. This resonance is in addition to the THz metamaterial absorption resonance at 109 μm (2.75 THz). We demonstrate the inherent scalability and versatility of our MSMMA by describing a second device whereby the MM-induced IR absorption peak frequency is tuned by varying the IR absorber geometry. Such a MSMMA could be coupled with a suitable sensor and formed into a focal plane array, enabling multispectral imaging.

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Experimental Realization of a Metamaterial Detector Focal Plane Array

Cited by 76 publications

References 26 publications

Design of an effective energy receiving adapter for microwave wireless power transmission application

Design of an effective energy receiving adapter for microwave wireless power transmission application

Multi-spectral materials: hybridisation of optical plasmonic filters, a mid infrared metamaterial absorber and a terahertz metamaterial absorber

Multispectral metamaterial absorber

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