A Thermally Controlled Tri-Band Metamaterial Perfect Absorber based on Vanadium Dioxide (VO2) for Terahertz Communication Application
| Authors | Vutukuri Sarvani Duti Rekha1, Annapantula Sudhakar2, Sudipta Das3 , Namrata Vrajlal Langhnoja4 |
| Affiliations |
1Department of ECE, PVP Siddhartha Institute of Technology, Andhra Pradesh, India 2Department of Electronics and Communication Engineering, GMR Institute of Technology (GMRIT) – Deemed to be University, Rajam, 532127 Andhra Pradesh, India 3Department of Electronics and Communication Engineering, IMPS College of Engineering and Technology, Malda 732103, West Bengal, India 4Department of Electronics and Communication Engineering, Lalbhai Dalpatbhai College of Engineering, 380015 Ahmedabad, Gujarat, India |
| Е-mail | sudhakar.a@gmrit.edu.in |
| Issue | Volume 18, Year 2026, Number 2 |
| Dates | Received 25 January 2026; revised manuscript received 15 April 2026; published online 29 April 2026 |
| Citation | Vutukuri Sarvani Duti Rekha, Annapantula Sudhakar, et al., J. Nano- Electron. Phys. 18 No 2, 02019 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(2).02019 |
| PACS Number(s) | 78.67.Pt, 81.05.Xj |
| Keywords | Absorber (3) , Broadband, Metamaterial (2) , Terahertz, Tri-band, Vanadium dioxide, Gold (8) . |
| Annotation |
This article proposes a terahertz metamaterial absorber that uses the phase transition features of vanadium dioxide (VO2) to achieve broadband characteristics. This paper presents an innovative design for terahertz absorbers that is thinner, has a wider bandwidth, and an expanded adjustable range than existing ones. An electromagnetic wave propagation-preventing bottom conducting layer of gold (Au), a dielectric substrate of silicon dioxide, and a 0.4 m thick radiating element of vanadium dioxide (VO2). The proposed structure has dimensions of 16 x 16 x 9.6 m3. At operational frequencies, the prescribed design achieves wideband absorption with an absorption efficiency of over 96 % and shows outstanding absorption performance across a wide range of polarization angles even at high temperatures. The prescribed structure functions at three distinct frequencies are 3.71 THz, 6.59 THz, and 17.2 THz. The operational frequency ranges have maximum absorption percentages of 98.7 %, 97.8 %, and 97.7 %, ranging from 3.3 to 4.2 THz, 5.6 to 6.9 THz, and 15.5 to 17.5 THz, respectively. In the terahertz spectrum, this one-of-a-kind device provides an innovative contribution by acting as both an absorber and a reflector. The absorber also has wide-angle absorption properties and is insensitive to polarization. It is notable that the absorber being proposed has adjustable properties. For terahertz communication applications, the recommended terahertz tri-band absorbing can be appropriate. |
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