Tunable and polarization-sensitive graphene-based terahertz absorber with eight absorption bands

Cai, Yijun; Guo, Yali; Zhang, Hongyi; Wang, Yi; Chen, Chengying; Lin, Feng; Zuo, Shikai; Zhou, Yuanguo

doi:10.1088/1361-6463/abe159

Cited by 14 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two kinds of metamaterial structures with dielectric and metal resonators are given in Figure 5a,b. Another method to achieve multi-band absorption is stacking the multiple layers of graphene structure with different shapes and sizes [61][62][63][64]. In 2018, R. Xing et al designed a dual-band terahertz metamaterial absorber using graphene sheet and ribbons [65].…”

Section: Dual-/multi-band Terahertz Metamaterials Absorbersmentioning

confidence: 99%

“…The background layer is a gold cross structure. In 2021, P. Zamzam et al proposed a four-band metamaterial absorber based on dual-layer graphene microstructures in the terahertz Another method to achieve multi-band absorption is stacking the multiple layers of graphene structure with different shapes and sizes [61][62][63][64]. In 2018, R. Xing et al designed a dual-band terahertz metamaterial absorber using graphene sheet and ribbons [65].…”

Section: Dual-/multi-band Terahertz Metamaterials Absorbersmentioning

confidence: 99%

See 1 more Smart Citation

A Review: The Functional Materials-Assisted Terahertz Metamaterial Absorbers and Polarization Converters

et al. 2022

Self Cite

View full text Add to dashboard Cite

When metamaterial structures meet functional materials, what will happen? The recent rise of the combination of metamaterial structures and functional materials opens new opportunities for dynamic manipulation of terahertz wave. The optical responses of functional materials are greatly improved based on the highly-localized structures in metamaterials, and the properties of metamaterials can in turn be manipulated in a wide dynamic range based on the external stimulation. In the topical review, we summarize the recent progress of the functional materials-based metamaterial structures for flexible control of the terahertz absorption and polarization conversion. The reviewed devices include but are not limited to terahertz metamaterial absorbers with different characteristics, polarization converters, wave plates, and so on. We review the dynamical tunable metamaterial structures based on the combination with functional materials such as graphene, vanadium dioxide (VO2) and Dirac semimetal (DSM) under various external stimulation. The faced challenges and future prospects of the related researches will also be discussed in the end.

show abstract

Section: Dual-/multi-band Terahertz Metamaterials Absorbersmentioning

confidence: 99%

Section: Dual-/multi-band Terahertz Metamaterials Absorbersmentioning

confidence: 99%

A Review: The Functional Materials-Assisted Terahertz Metamaterial Absorbers and Polarization Converters

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…These fascinating properties make graphene an appropriate candidate for tunable and compact terahertz switcher. For example, Cai et al suggested a MA composed of stacked, orthogonal and elliptic graphene layers to achieve eight THz absorption bands [17]. Deng et al presented a polarizationsensitive MA, consisting of an electric resonance structure with periodic patterns and a metallic grounding plane spaced by single-layer graphene and SiO 2 [18].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the tunable and polarization sensitive three-band terahertz graphene metamaterial absorber

Zhan

Fan

2023

Mater. Res. Express

View full text Add to dashboard Cite

A tunable three band absorber has been proposed and investigated in the terahertz (THz) with graphene strips. Three perfect absorption is elaborately analyzed with the electrical field and the induced surface current distribution. Owing to the unique character of graphene, the position and intensity of three peaks are flexibly regulated with different Fermi energy and chemical potential. Meanwhile, an on to off modulation of the perfect absorption is achieved when the polarization angle varies from 0 to 90°, and the modulation degree of three resonant peaks can simultaneously approach 100%, which are much higher than the previous work. Moreover, the tunable absorption is examined with different geometry parameters and intermediate medium. Such highly tunable absorber with our proposed design has numerous application potential in the controllable optical switchers, filters, detectors, and sensors.

show abstract

“…So far, EIT effect has been achieved through clever designs in numerous structures like strips [10], split ring resonators [13], circular/square rings [14], and other complex configurations [15,16] for the realization of photonic components like sensors [13], absorbers [17], modulators [14], delay lines [18], etc at terahertz (THz) frequencies. Nonetheless, in order to maximize the practical functionality of these components, it is essential to enable active/dynamic control of the EIT effect in the metasurface structures [19,20].…”

Section: Introductionmentioning

confidence: 99%

Temperature tunable electromagnetically induced transparency in terahertz metasurface fabricated on ferroelectric platform

Devi¹,

Jana²,

Rane³

et al. 2022

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

The integration of active materials in terahertz (THz) metasurfaces is pivotal for the realization of functional device applications in diverse fields like sensing, imaging, communication, etc. In this context, ferroelectric materials endowed with tunable electro-optic properties have recently emerged as a novel candidate for achieving actively tuned THz metasurfaces. Here, we experimentally investigate temperature tuning of electromagnetically induced transparency (EIT) effects in a THz metasurface based on ferroelectric barium titanate (BaTiO3) thin film. We characterize tunable dielectric properties of the BTO thin film under variable temperatures (25 0C to 100 0C) at THz frequencies by utilizing THz time domain spectroscopy (THz-TDS) technique. Based on this aspect, we intelligently design a THz metasurface capable of displaying the EIT effect. THz transmissions through the metasurface sample are then probed for different applied temperatures. The EIT features undergo frequency shifts along with amplitude modulations owing to the temperature induced variations of the dielectric properties of the BTO thin film. A total red shift ~ 27 GHz in EIT resonance dip is observed experimentally as the temperature increases from 25oC to 100oC. Therefore, we demonstrate utilities of ferroelectric platform towards the development of temperature tunable EIT metasurfaces.

show abstract

Tunable and polarization-sensitive graphene-based terahertz absorber with eight absorption bands

Cited by 14 publications

References 28 publications

A Review: The Functional Materials-Assisted Terahertz Metamaterial Absorbers and Polarization Converters

A Review: The Functional Materials-Assisted Terahertz Metamaterial Absorbers and Polarization Converters

Investigation on the tunable and polarization sensitive three-band terahertz graphene metamaterial absorber

Temperature tunable electromagnetically induced transparency in terahertz metasurface fabricated on ferroelectric platform

Contact Info

Product

Resources

About