Theoretical Investigation of an Ultra-Wideband Tunable Metamaterial Absorber Based on Four Identical Vanadium Dioxide Resonators in the Terahertz Band

Zou, Yuke; Lin, Hongyan; Wu, Yue; Zhu, Huaxin; Zhang, Xiangyang; Wang, Ben‐Xin

doi:10.1007/s11664-023-10250-y

Cited by 6 publications

(2 citation statements)

References 73 publications

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“…Yet, it exhibits a low modulation depth and requires a high operating temperature. In [21], researchers explore a tunable broadband THz MM absorber utilizing VO2, achieving over 90% absorption with a 0.33 THz bandwidth but falling short of practical expectations. Additionally, [22] discusses dynamic and polarizationinsensitive MM based on VO 2 .…”

Section: Introductionmentioning

confidence: 99%

VO₂-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption

Upender,

Harsha Vardhini,

Kumba

et al. 2024

IEEE Access

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This paper presents a groundbreaking advancement in terahertz (THz) technology through the introduction of a novel ultrathin absorber. Composed of vanadium dioxide (VO 2 ) and graphene, this absorber offers a non-metallic solution for wideband absorption, covering an impressive frequency range from 1.198 THz to 8.752 THz (7.554 THz). Our absorber exhibits exceptional tunable and switchable performance, a significant achievement considering the challenge of achieving frequency tunability across broadband absorption ranges, which was the primary focus of our research endeavor. Furthermore, our proposed absorber demonstrates remarkable characteristics, achieving up to 80% absorption even at high incidence angles of up to 80 o . Additionally, the absorber enhances Shielding Effectiveness in electromagnetic interference (EMI) shields and stealth systems, further highlighting its versatility and potential impact in various applications.INDEX TERMS Absorber, graphene, switchable, tunable, VO 2 , Wideband.

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Section: Introductionmentioning

confidence: 99%

VO₂-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption

Upender,

Harsha Vardhini,

Kumba

et al. 2024

IEEE Access

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“…In 2008, Landy et al presented the first meta-material absorber with near-perfect absorption in the microwave range [ 17 ]. Its thickness is only one-twenty-fifth of the resonance wavelength, which lays a solid foundation for the development of lightweight and ultra-thin absorbing devices [ 18 ]. In 2011, J.…”

Section: Introductionmentioning

confidence: 99%

Triple-Band and Ultra-Broadband Switchable Terahertz Meta-Material Absorbers Based on the Hybrid Structures of Vanadium Dioxide and Metallic Patterned Resonators

et al. 2023

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A bifunctional terahertz meta-material absorber with three layers is designed. The surface of the bifunctional meta-material absorber is a periodically patterned array composed of hybrid structures of vanadium dioxide (VO2) and metallic resonators; the middle layer is a nondestructive TOPAS film, and the bottom layer is a continuous metallic plane. Utilizing the phase-transition property of VO2, the responses of the meta-material absorber could be dynamically switched between triple-band absorption and ultra-broadband absorption. When VO2 is in the metallic state, an ultra-broadband absorption covering the bandwidth of 6.62 THz is achieved over the range from 4.71 THz to 11.33 THz. When VO2 is in the di-electric state, three absorption peaks resonated at 10.57 THz, 12.68 THz, and 13.91 THz. The physical mechanisms of the bifunctional meta-material absorber were explored by analyzing their near-field distributions. The effects of varying structural parameters on triple-band and ultra-broadband absorption were investigated. It is revealed that by optimizing the structure parameters, the number of absorption peaks could be increased for a certain sacrifice of absorption bandwidth. FDTD Solutions and CST Microwave Studio were used to simulate the data of the absorber, and similar results were obtained.

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Advanced VO2-Graphene based compact THz absorber for EM shielding and biosensing applications

Upender,

Sandeep,

Bharathi

et al. 2025

Ain Shams Engineering Journal

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Theoretical Investigation of an Ultra-Wideband Tunable Metamaterial Absorber Based on Four Identical Vanadium Dioxide Resonators in the Terahertz Band

Cited by 6 publications

References 73 publications

VO₂-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption

VO₂-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption

Triple-Band and Ultra-Broadband Switchable Terahertz Meta-Material Absorbers Based on the Hybrid Structures of Vanadium Dioxide and Metallic Patterned Resonators

Advanced VO2-Graphene based compact THz absorber for EM shielding and biosensing applications

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Theoretical Investigation of an Ultra-Wideband Tunable Metamaterial Absorber Based on Four Identical Vanadium Dioxide Resonators in the Terahertz Band

Cited by 6 publications

References 73 publications

VO2-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption

VO2-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption

Triple-Band and Ultra-Broadband Switchable Terahertz Meta-Material Absorbers Based on the Hybrid Structures of Vanadium Dioxide and Metallic Patterned Resonators

Advanced VO2-Graphene based compact THz absorber for EM shielding and biosensing applications

Contact Info

Product

Resources

About

VO₂-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption

VO₂-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption