Tunable chevron-shaped infrared metamaterial

Mo, Yannan; Zhong, Jitong; Lin, Yu‐Sheng

doi:10.1016/j.matlet.2019.127291

Cited by 41 publications

(18 citation statements)

References 13 publications

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“…Since 2000, there have been reported many visible metamaterials to be used in color filters, resonators, absorbers, and sensors. [72][73][74][75][76][77][78] Lin et al proposed four types of suspended nanodisk metasurfaces, which exhibit perfect absorption characteristics with ultrabroad tuning range of resonance spanning the whole visible spectra range and narrower bandwidth as shown in Figure 4(a). [79] The same research group also demonstrated two designs of high-efficiency reconfigurable color filter based on suspended rectangular Al and elliptical lithium niobate (LiNbO 3 ) metasurfaces on Si substrate coated with an Al mirror layer atop as shown in Figure 4(b).…”

Section: Reconfigurable Visible Metamaterialsmentioning

confidence: 99%

Reconfigurable metamaterials for optoelectronic applications

Lin

2020

International Journal of Optomechatronics

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Section: Reconfigurable Visible Metamaterialsmentioning

confidence: 99%

Reconfigurable metamaterials for optoelectronic applications

Lin

2020

International Journal of Optomechatronics

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“…They are widely studied to realize thermal emitters and are perfect absorbers for energy harvesting, medical imaging, and high-sensitivity sensing applications [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ]. By tailoring the geometrical dimensions, metamaterials can be designed to span broad operating wavelengths, including visible [ 31 , 32 , 33 ], IR [ 34 , 35 , 36 , 37 , 38 , 39 ], terahertz [ 40 , 41 , 42 , 43 , 44 ], and microwave light [ 45 , 46 ]. To provide metamaterials with more flexibility, there are many techniques proposed for tuning mechanisms using MEMS technology [ 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ]: liquid crystal [ 55 ], photo-excited [ 56 ], phase-change materials [ 57 , 58 ], thermal annealing [ …”

Section: Introductionmentioning

confidence: 99%

Tunable Infrared Metamaterial Emitter for Gas Sensing Application

Lin

2020

Nanomaterials

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We present an on-chip tunable infrared (IR) metamaterial emitter for gas sensing applications. The proposed emitter exhibits high electrical-thermal-optical efficiency, which can be realized by the integration of microelectromechanical system (MEMS) microheaters and IR metamaterials. According to the blackbody radiation law, high-efficiency IR radiation can be generated by driving a Direct Current (DC) bias voltage on a microheater. The MEMS microheater has a Peano-shaped microstructure, which exhibits great heating uniformity and high energy conversion efficiency. The implantation of a top metamaterial layer can narrow the bandwidth of the radiation spectrum from the microheater to perform wavelength-selective and narrow-band IR emission. A linear relationship between emission wavelengths and deformation ratios provides an effective approach to meet the requirement at different IR wavelengths by tailoring the suitable metamaterial pattern. The maximum radiated power of the proposed IR emitter is 85.0 µW. Furthermore, a tunable emission is achieved at a wavelength around 2.44 µm with a full-width at half-maximum of 0.38 µm, which is suitable for high-sensitivity gas sensing applications. This work provides a strategy for electro-thermal-optical devices to be used as sensors, emitters, and switches in the IR wavelength range.

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“…The classical design of a metamaterial is the configuration of a split-ring resonator (SRR). There has been much research presenting and demonstrating the use of diversified SRR designs [8][9][10][11][12][13], either symmetrically or asymmetrically, such as cross-shaped SRR [9], V-shaped SRR [10,11], spiral-shaped SRR [12], and multiple SRRs [13]. In view of these extraordinary optical properties of SRR-based metamaterials, there have been extensive studies reported in the different frequency ranges, from microwave, terahertz (THz), and infrared to visible spectra [14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, metamaterials are useful for tunable THz devices, which have been presented with electrical control [24], optical control [25], thermal control [26], and magnetic control [27]. Recently, THz metamaterials hybridized with microelectromechanical systems (MEMS) have become one of the most striking topics in this field, owing to their advantages of electrostatic tunability, enhanced electro-optic performance, and miniaturized size [10,11]. Many electromagnetic functions can be performed by using the MEMS technique to actively manipulate the metamaterial's configuration.…”

Section: Introductionmentioning

confidence: 99%

Polarization-Sensitive Metamaterials with Tunable Multi-Resonance in the Terahertz Frequency Range

Chen

Lin

2020

Crystals

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We propose two designs of polarization-sensitive metamaterials (PSMs), which are composed of face-to-face spilt-ring resonators (SRRs) and a cut-wire resonator (CWR) sandwiched by two face-to-face SRRs. For convenient description, they are denoted as PSM_1 and PSM_2, respectively. PSM_1 and PSM_2 are fabricated by tailoring Au layers with periodic configurations on silicon-on-insulator (SOI) substrates. By changing the incident polarization light, the electromagnetic responses of PSM_1 can be manipulated between single-resonance and dual-resonance, while those of PSM_2 exhibit switching behavior between single-resonance and triple-resonance. By enlarging the distance between the gap centers of the two face-to-face SRRs along the y-axis direction, the electromagnetic responses of PSM_1 show switching characteristics from single-resonance to triple-resonance at the transverse electric (TE) mode and from dual-resonance to triple-resonance at the transverse magnetic (TM) mode. PSM_2 exhibits switching characteristics from single-resonance to triple-resonance at the TE mode and from dual-resonance to quad-resonance at the TM mode. Furthermore, by changing the width of the CWR under the condition of two face-to-face SRRs with a constant gap distance, PSM_2 exhibits stable electromagnetic responses at the TE mode and tunable resonances at the TM mode, respectively. This work paves the way to the possibility of metamaterial devices with great tunability, switchable bandwidth, and polarization-dependence characteristics.

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Tunable chevron-shaped infrared metamaterial

Cited by 41 publications

References 13 publications

Reconfigurable metamaterials for optoelectronic applications

Reconfigurable metamaterials for optoelectronic applications

Tunable Infrared Metamaterial Emitter for Gas Sensing Application

Polarization-Sensitive Metamaterials with Tunable Multi-Resonance in the Terahertz Frequency Range

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