نوع مقاله : مقاله فنی
نویسندگان
دانشکده فیزیک، دانشگاه سمنان، صندوق پستی: 363-35195، سمنان - ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
The timely detection of human immunodeficiency virus (HIV) at the point of care (POC) enables prompt medical intervention, and appropriate treatment, and helps reduce the growth rate and spread of the disease. In this paper, two HIV-1 biosensors are proposed: one based on a perfect 1-D photonic crystal (PC) and the other based on a 1-D PC containing a defect layer. The main characteristics of these biosensors, including sensitivity and Q factor, are analyzed. Additionally, the effect of the irradiation angle on the performance of these two sensors is evaluated. The results show that the sensitivity of the HIV-1 biosensor based on the perfect photonic crystal is independent of the irradiation angle. Meanwhile, the Q factor of this sensor increases with an increase in the irradiation angle, with the Q factor at an angle of 85 degrees being nearly 14 times greater than that at normal incidence. On the other hand, both the sensitivity and Q factor of the biosensor containing the defect layer are dependent on the irradiation angle. The maximum values of these parameters occur at irradiation angles of 65 and 47 degrees, with corresponding values of 1056 nm/RIU and 12683, respectively. Therefore, the biosensor with the defect layer is recommended as a suitable candidate for HIV detection.
کلیدواژهها English