Cross-like terahertz metamaterial absorber for sensing applications

• Published in: Pramāṇa Vol. 91; no. 2; pp. 1 - 7
• Main Authors: Sabah, Cumali, Mulla, Batuhan, Altan, Hakan, Ozyuzer, Lutfi
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 01.08.2018; Springer Nature B.V
• Subjects: Absorbers (materials); Absorption spectra; Astronomy; Astrophysics and Astroparticles; Computer simulation; Detection; Metamaterials; Observations and Techniques; Physics; Physics and Astronomy; Sensitivity; terahertz waves; 07.05.Tp; absorber; sensor; 78.20.Bh; multiband; 78.67.Pt; Metamaterial; 07.07.Df
• ISSN: 0304-4289; 0973-7111
• DOI: 10.1007/s12043-018-1591-4

In this work, a new multiband terahertz metamaterial absorber is designed and characterised by numerical simulation method. In addition, the utilisation of the proposed absorber as a sensor is also investigated. The dielectric and thickness sensing characteristics are analysed. The proposed multiband metamaterial absorber has the ability for utilising the terahertz region up to 2 THz. According to the results, it is found that the proposed absorber is capable of sensing unknown materials and material thickness with any of its five absorption bands. The sensitivity of the proposed sensor is 6.57 GHz / unit sensitivity for dielectric sensing and 7.66 GHz / μ m for thickness sensing.