Switchable bi-functional metamaterial based on vanadium dioxide for broadband absorption and broadband polarization in terahertz band

Niu, Junhao; Yao, Qianyu; Mo, Wei; Li, Chunhui; Zhu, Aijun

doi:10.1016/j.optcom.2022.128953

Cited by 46 publications

(10 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the designed metamaterials, sputtering deposition technology [33] and lithography technology [34] can be used in production. A possible manufacture process for the designed structure can be briefly given as follows [30]: (a) gold film is evaporated and deposited onto a clean silicon substrate by sputtering technology. (b) The PI solution is uniformly coated on the gold substrate by the spin-coating technology, and a solid PI layer with the required thickness is formed after high-temperature treatment [35].…”

Section: The Metamaterials Behaves As An Absorbermentioning

confidence: 99%

Multifunctional metamaterial for realizing absorption and polarization conversion on the basis of vanadium dioxide

Qiu

Yan

Feng

et al. 2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

In this paper, the phase change material vanadium dioxide (VO2) is introduced to propose a tunable multifunctional metamaterial device, which treats the phase change property of VO2 to realize the switching of absorption, linear to linear (LTL) polarization conversion, and linear to circular (LTC) polarization conversion functions. When VO2 is in metal state, the structure can be applied as an absorber to achieve the wide-band and narrow-band absorption. In the broad frequency area of 2.007 – 2.803 THz, the absorption is above 90%. And the narrow-band absorption near the center frequency 1.0126THz reaches 95.04%. When VO2 is in the insulator state, the studied device can be treated as a polarization conversion device to achieve LTL and LTC polarization conversion. In the low frequency range, the device achieves LTL with polarization conversion efficiency (PCR) above 90% when the frequency is between 0.439 – 0.907 THz. In the high frequency range, the structure can be treated as the LTC polarization converter to achieve right-hand circular polarization (RHCP), left-hand circular polarization (LHCP), and LHCP in the ranges of 2.317 – 2.329 THz, 2.356 – 2.531 THz and 2.582 – 2.633 THz, respectively. In addition, the ellipticity is above 0.9. Finally, the effects of geometric parameters, angle of incidence and polarization angle on the absorption and PCR are also discussed. The proposed structure has great potential for advanced technologies such as imaging, sensing, communication, and stealth.

show abstract

Section: The Metamaterials Behaves As An Absorbermentioning

confidence: 99%

Multifunctional metamaterial for realizing absorption and polarization conversion on the basis of vanadium dioxide

Qiu

Yan

Feng

et al. 2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…[33][34][35] In 2021, Wu et al designed a tunable broadband metamaterial perfect absorber by changing the temperature of VO 2 . 36 Niu et al 37 proposed a switchable bi-functional optical metamaterial for broadband absorption and polarization conversion in the terahertz band based on the phase transition of VO 2 . Zhang et al designed a terahertz ultra-wideband absorber using VO 2 , and the peak absorption intensity can be dynamically adjusted.…”

Section: Introductionmentioning

confidence: 99%

Actively tunable and switchable terahertz metamaterials with multi-band perfect absorption and polarization conversion

Zhu,

Huang,

et al. 2024

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…When the temperature is about 340 K, the conductivity of VO 2 will have a significant mutation of five orders and can realize the transition between insulator and metal. Based on this characteristic, VO 2 thin films have been widely used to design wideband absorbers, absorption–polarization converters, and wideband–narrowband conversion absorbers [ 25 , 26 , 27 ]. Recently, some researchers use VO 2 thin film to realize photonic crystal metamaterial−based sensors [ 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

A Thermally Controlled Multifunctional Metamaterial Absorber with Switchable Wideband Absorption and Transmission at THz Band

Wang

Fu²,

Wen³

et al. 2023

Materials

View full text Add to dashboard Cite

This paper proposes a thermally controlled multifunctional metamaterial absorber with switchable wideband absorption and transmission at the THz band based on resistive film and vanadium dioxide (VO2). The function of the absorber can be adjusted by changing the phase transition characteristics of VO2. When VO2 is in a metallic state, the absorber can achieve wideband absorption with above 90% absorption from 3.31 THz to 10 THz and exhibits excellent absorption performance under a wide range of incident and polarization angles. When VO2 is in an insulating state, the metamaterial acts in transmission mode with a transmission coefficient of up to 61% at 5.15 THz. The transmission region is inside the absorption band, which is very important for practical applications. It has the advantages of having a simple structure, wideband absorption, and switchable absorption/transmission with potential application value in the fields of stealth of communication equipment and radar at the THz band.

show abstract

Switchable bi-functional metamaterial based on vanadium dioxide for broadband absorption and broadband polarization in terahertz band

Cited by 46 publications

References 22 publications

Multifunctional metamaterial for realizing absorption and polarization conversion on the basis of vanadium dioxide

Multifunctional metamaterial for realizing absorption and polarization conversion on the basis of vanadium dioxide

Actively tunable and switchable terahertz metamaterials with multi-band perfect absorption and polarization conversion

A Thermally Controlled Multifunctional Metamaterial Absorber with Switchable Wideband Absorption and Transmission at THz Band

Contact Info

Product

Resources

About