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 Multiple-step graphene grating optical sensors based on surface plasmons in IR range for ultra-sensing biomolecules
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
SPR Sensor,Surface Plasmon,Bio Sensor,Graphene
مجله Materials Science and Engineering B-Advanced Functional Solid-State Materials
شناسه DOI https://doi.org/10.1016/j.mseb.2020.114988
پژوهشگران زینب صادقی (نفر اول) ، شجاعی حق سیدناصر (نفر دوم) ، حسین شیرکانی (نفر سوم)

چکیده

The emergent need for high-sensitivity and low-cost sensors to detect biomolecules and diseases in the shortest time is one of the important targets in medical and industrial progress. In this paper, multiple-step sensors based on SPR in graphene were proposed and investigated. The structures consisted of graphene-gold gratings that were separated into three different sensors: single, double and triple-step. The sensitivity and quality factor of these sensors were calculated, and their response in the infrared region was investigated. The best quality factor of the double-step sensor was 15,583 for the refractive index of 1.300 and it was 42,944 for triple-step in the refractive index of 1.200, which is a great performance. It was found that the double-step sensor can measure the refractive index of substances–A_G protein and guanine–with an accuracy of 0.00005; while that of the triple step sensor can detect materials–water, glucose, and blood–in order of 0.00001.