@inproceedings{e068c20b6f13461f84d3c1f88caa4ed8,
title = "An Ultrathin Terahertz Hexa-Band Fractal Meta-Absorber for Chemical Sensing Applications",
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 λ and its largest dimension is 0.38 λ. 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.",
keywords = "Fractal, Metamaterial, Refractive index, Sensing, Terahertz",
author = "Afzaal Ahmad and Muhammad Zubair and Kazim, \{Jalil Ur Rehman\} and Imran, \{Muhammad Ali\} and Qammer Abbasi",
note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2nd International Conference on Microwave, Antennas and Circuits, ICMAC 2025 ; Conference date: 17-04-2025 Through 18-04-2025",
year = "2025",
doi = "10.1109/ICMAC64768.2025.11003254",
language = "English",
series = "2025 2nd International Conference on Microwave, Antennas and Circuits, ICMAC 2025",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2025 2nd International Conference on Microwave, Antennas and Circuits, ICMAC 2025",
address = "United States",
}