Wide band ultrathin polarization insensitive electric field driven metamaterial absorber

Dhillon, Amarveer Singh; Mittal, Divesh

doi:10.1016/j.optcom.2019.03.032

Cited by 6 publications

(7 citation statements)

References 41 publications

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“…Technological development in the terahertz (THz) domain (0.1 to 10.0 THz) has accelerated significantly in recent years due to the numerous prospects for applications in various fields such as security, non-destructive testing, medical imaging, molecular spectroscopy and telecommunications, etc [1,2,3,4]. In that perspective, it has been shown that the artificial optical properties of metamaterials can be tailored to design a wide range of terahertz components such as metalenses [5,6], filters [7, 8, 9], polarizers [10,11], switches [12,13,14,15], absorbers [16,17,18] and isolators [19]. Additive manufacturing techniques have emerged in recent years as a promising alternative to conventional clean room approaches [20,21,22].…”

Section: Introductionmentioning

confidence: 99%

“…In that perspective, it has been shown that the artificial optical properties of metamaterials can be tailored to design a wide range of terahertz components such as metalenses [5,6], filters [7][8][9], polarizers [10,11], switches [12][13][14][15], absorbers [16][17][18] and isolators [19]. Additive manufacturing techniques have emerged in recent years as a promising alternative to conventional clean room approaches [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of plotter printing for sub-terahertz metallic metasurfaces fabrication on ultra-thin substrate

Brulon¹,

Fix²,

Salmon³

et al. 2022

J. Micromech. Microeng.

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Additive manufacturing processes have emerged as a promising way to conceive terahertz and millimetric components. In this work, we discuss a printing process for sub-terahertz metallic metasurfaces fabrication on ultra-thin substrates. We demonstrate the use of a plastic substrate with a micrometric thickness which makes this printing method a promising and low cost alternative to conventional optical lithography for the fabrication of flexible terahertz 2D metasurfaces. After detailing the key parameters and limitations, we applied the optimized process to fabricate samples composed of periodic arrays of split ring resonators on 50 µm thick fused silica and 3 µm thick PET substrates. The optical response in transmission of the metasurfaces shows expected resonances in the 100 GHz range and demonstrates the use of microplotter system for rapid prototyping of low-loss terahertz passive components on ultra-thin substrate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of plotter printing for sub-terahertz metallic metasurfaces fabrication on ultra-thin substrate

Brulon¹,

Fix²,

Salmon³

et al. 2022

J. Micromech. Microeng.

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“…Among the studies, cloaking is one of the most popular MTM applications (Cai et al, 2007; Schurig et al, 2006). Microwave absorber and energy harvesting applications have been studied in a variety of frequency ranges (Alkurt et al, 2018; Dhillon and Mittal, 2019). MTMs are employed to increase antenna gain, directivity, bandwidth and reflection coefficient parameter of the antenna (Hasan et al, 2019; Patel et al, 2019; Ünal and Altıntarla, 2019).…”

Section: Introductionmentioning

confidence: 99%

Chiral metamaterial-based sensor applications to determine quality of car lubrication oil

Dalgaç

Karadağ

Bakır

et al. 2020

Transactions of the Institute of Measurement and Control

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Motor oils have to be changed periodically in a period of 10.000–20.000 km according to the motor types. A chiral metamaterial sensor that operates in X band is developed to determine the quality of motor oils, numerically analyzed and experimentally tested in this study. The proposed design has square and circular shaped resonators that are printed on IS680 substrate. Reflection coefficient parameters of S11 and S22 are employed for the verification of sensor. The physical principle behind the structure in this study is based on the degradation of motor oil, which changes dielectric constant and causes resonance frequency shifts. According to S11 reflection coefficient data, 40 MHz(0 km–10000 km) and 60 MHz(0 km–5000 km) resonant frequency shifts are observed between clear and dirty motor oils samples. These shifts have the values of 30 MHz(0 km–10000 km) and 120 MHz(0 km–5000 km), when we look at S22. The simulated and experimental study results are complying with each other. The novel side of this study is to have high sensitivity and higher quality factor when it is compared with similar study results. Furthermore, no such studies have been conducted so far in the literature.

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“…Several polarization-insensitive MMAs have been investigated at different ranges of the THz spectrum [22][23][24][25]. Dhilon and Mittal [26] presented a dually-stacked, gold-stripped resonator that was fabricated on polyamide substrate, which yielded a result of 98% absorption and a fractional bandwidth of 12.8% for a narrow frequency range of 0.591-0.672 THz. Their illustrated data show that MMPA was insensitive to transverse electric (TE) and transverse magnetic (TM) polarization for the incident angle up to 75 degrees while maintaining absorption above 80%.…”

Section: Introductionmentioning

confidence: 99%

Polarization-Independent Ultra-Wideband Metamaterial Absorber for Solar Harvesting at Infrared Regime

Alam

Islam

et al. 2020

Materials

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This paper presents an ultra-wideband metamaterial absorber for solar harvesting in the infrared regime (220–360 THz) of the solar spectrum. The proposed absorber consists of square-shaped copper patches of different sizes imposed on a GaAs (Gallium arsenide) substrate. The design and simulation of the unit cell are performed with finite integration technique (FIT)-based simulation software. Scattering parameters are retrieved during the simulation process. The constructed design offers absorbance above 90% within a 37.89% relative bandwidth and 99.99% absorption over a vast portion of the investigated frequency range. An equivalent circuit model is presented to endorse the validity of the proposed structure. The calculated result strongly agrees with the simulated result. Symmetrical construction of the proposed unit cell reports an angular insensitivity up to a 35° oblique incidence. Post-processed simulation data confirm that the design is polarization-insensitive.

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Wide band ultrathin polarization insensitive electric field driven metamaterial absorber

Cited by 6 publications

References 41 publications

Optimization of plotter printing for sub-terahertz metallic metasurfaces fabrication on ultra-thin substrate

Optimization of plotter printing for sub-terahertz metallic metasurfaces fabrication on ultra-thin substrate

Chiral metamaterial-based sensor applications to determine quality of car lubrication oil

Polarization-Independent Ultra-Wideband Metamaterial Absorber for Solar Harvesting at Infrared Regime

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