10 فروردین 1403
حسين شيركاني

حسین شیرکانی

مرتبه علمی: استادیار
نشانی: دانشکده علوم و فناوری نانو و زیستی - گروه فیزیک
تحصیلات: دکترای تخصصی / فیزیک
تلفن: 09173755086
دانشکده: دانشکده علوم و فناوری نانو و زیستی

مشخصات پژوهش

عنوان Modeling of near-infrared SPR sensors based on silver-graphene asymmetric grating and investigation of their capability of gases detection
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
SPR sensors, Graphene, Gas Sensor, Grating
مجله PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
شناسه DOI https://doi.org/10.1016/j.physe.2021.114987
پژوهشگران مریم یوسفی (نفر اول) ، نیلوفر مظفری (نفر دوم) ، حسین شیرکانی (نفر سوم)

چکیده

Two structures of graphene-silver asymmetric grating surface plasmon resonance sensors with high sensitivity were presented. In Structure 1, the air, with a thickness of 100 nm, was located on the sensing medium; while, Structure 2 has become small with ignoring the air. The sensitivity of both sensors was calculated through the alteration of the wavelength peak of the extinction curve in minor variability of refractive index of the sensing medium. The sensitivity of Structure 1 and Structure 2 was 880 nm/RIU and 1742 nm/RIU, respectively. By comparing the different sensors, it should be noted that the ability to reach a small-sized sensor with a high performance (Structure 2) is the center of researchers' attention. Also, these two SPR sensors could detect most gases with a refractive index from 1.000 to 1.500 such as CO2, CS2, SO2, and so on, with high precision.