Year: 2025
Type: conference-paper
Abstract: An ultrathin, single-layer planar terahertz metamaterial absorber (MMA) is numerically demonstrated for chemical sensing applications. The fractal MMA consists of a 2nd order Cayley tree-shaped resonator deposited on a polyimide substrate. The designed absorber is polarization-insensitive and has six resonance frequencies at 3.376, 6.49, 6.92, 8.083, 8.227, and 9.36 THz. For the absorption peak at 3.376 THz, the proposed sensor has thickness of$0.067 \ \lambda$and its largest dimension is$0.38 \ \lambda$. The electric field map is analysed to interpret the fundamental characteristics of the six resonances. The refractive index based sensing is evaluated by placing an analyte on top of the absorber. The proposed sensor exhibits a good Quality factor (Q) value of 98.85 and its highest sensitivity is 1.35 THzIRIU. The designed MMA sensor is suitable for various chemical and bio sensing purposes.
Authors: Afzaal Ahmad, Muhammad Zubair, Jalil Ur-Rehman Kazim, Muhammad Ali Imran, Qammer Abbasi
Institution: University of Glasgow
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: APP17382: EPSRC-SFI: Active intelligent Reconfigurable surfaces for 6G wireless COMmunications (AR-COM), CHEDDAR: Communications Hub for Empowering Distributed clouD computing Applications and Research - TMF uplift, CHEDDAR: Communications Hub For Empowering Distributed ClouD Computing Applications And Research
OpenAlex ID: W4410539487