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Khatami, Seyed Amin, Rezaei, Pejman, Danaie, Mohamad. (1404). Performance Improvement of the RI Sensor Based on a Disk-shaped Graphene Absorber using Pyramidal Air Holes in the Dielectric Layer. نشریه هنرهای کاربردی, (), 1-8. doi: 10.22075/mseee.2025.35330.1176
Seyed Amin Khatami; Pejman Rezaei; Mohamad Danaie. "Performance Improvement of the RI Sensor Based on a Disk-shaped Graphene Absorber using Pyramidal Air Holes in the Dielectric Layer". نشریه هنرهای کاربردی, , , 1404, 1-8. doi: 10.22075/mseee.2025.35330.1176
Khatami, Seyed Amin, Rezaei, Pejman, Danaie, Mohamad. (1404). 'Performance Improvement of the RI Sensor Based on a Disk-shaped Graphene Absorber using Pyramidal Air Holes in the Dielectric Layer', نشریه هنرهای کاربردی, (), pp. 1-8. doi: 10.22075/mseee.2025.35330.1176
Khatami, Seyed Amin, Rezaei, Pejman, Danaie, Mohamad. Performance Improvement of the RI Sensor Based on a Disk-shaped Graphene Absorber using Pyramidal Air Holes in the Dielectric Layer. نشریه هنرهای کاربردی, 1404; (): 1-8. doi: 10.22075/mseee.2025.35330.1176

Performance Improvement of the RI Sensor Based on a Disk-shaped Graphene Absorber using Pyramidal Air Holes in the Dielectric Layer

Modeling and Simulation in Electrical and Electronics Engineering
مقالات آماده انتشار، اصلاح شده برای چاپ، انتشار آنلاین از تاریخ 26 شهریور 1404    اصل مقاله (762.64 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22075/mseee.2025.35330.1176
نویسندگان
Seyed Amin Khatami1؛ Pejman Rezaei* 2؛ Mohamad Danaie2
1Electrical and Computer Engineering Faculty, Semnan University, Semnan, Iran
2Faculty of Electrical and Computer Engineering (ECE), Semnan University, Semnan, Iran.
تاریخ دریافت: 24 شهریور 1403،  تاریخ بازنگری: 17 دی 1403،  تاریخ پذیرش: 26 شهریور 1404 
چکیده
This manuscript introduces a highly sensitive refractive index sensor with a disk-shaped graphene absorber. This design takes advantage of graphene's exceptional properties and integrates pyramid-shaped air holes within the dielectric layer. The sensor operates in the THz (THz), specifically focusing on improving sensitivity and overall performance. Graphene's high electrical conductivity and tunable properties make it an ideal material for THz absorption, enabling precise detection of refractive index changes the proposed structure comprises a graphene pattern on the top layer, a SiO2 as dielectric in the middle layer, and a gold reflective in the bottom layer. The sensor's performance is validated through full-wave simulation and transmission line modeling, showing a remarkable absorption rate of 99.99% at 4.26 THz. Further enhancement is achieved by introducing pyramidal air holes in the dielectric layer, significantly improving the sensor's quality factor and sensitivity. The quality factor of the sensor is enhanced from 14 to 23 by adding pyramidal air holes in the substrate layer. The structure was full-wave simulated using software CST with the FDTD solution method, and the transmission line method was done with the Matlab software. The results suggest that the planned sensor serves as a highly suitable candidate for early disease detection, including cancer and influenza, with potential applications in the medical industry.
کلیدواژه‌ها
Air Holes؛ Graphene-based Absorber؛ Sensitivity؛ Refractive Index Sensor؛ Biomedical Sensing
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تعداد مشاهده مقاله: 1


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