دنیای نانو

دنیای نانو

تاثیر ابعاد و موقعیت حلقه فلزی نقره بر عملکرد نانوزیست‌حسگر نوری مبتنی بر نانوساختار جفت شده میله-حلقه

نوع مقاله : مقاله پژوهشی

نویسندگان
1 گروه اپتیک و لیزر، دانشکده فیزیک، دانشگاه سمنان، سمنان، ایران
2 هیئت علمی/دانشگاه سمنان دانشکده فیزیک/دانشگاه سممنان
چکیده
در این مقاله نانوساختار جفت‌شده میله-حلقه نقره برای کوک‌کردن طول موج LSPR نانوساختار پلاسمونی پیشنهاد می‌شود و تاثیر عوامل مختلف از جمله طول و ضخامت حلقه نقره و نیز موقعیت حلقه بر پاسخ نوری این نانوساختار مورد بررسی قرار می‌گیرد. نتایج موید تاثیر قابل توجه جفت‌شدگی میله-حلقه و قابلیت کوک‌پذیری بسیار گسترده طول موج LSPR نانوساختار با تغییر مکان حلقه می‌باشد. بررسی تاثیر طول حلقه و ضخامت حلقه بر پاسخ نوری نانوساختار نیز بیانگر اهمیت انتخاب این عوامل است. به کارگیری این نانوساختار به عنوان زیست‌حسگر سرطان دهان مشخص می‌کند که حساسیت این نانوساختار تابعی از طول و ضخامت حلقه نقره و نیز مکان قرارگیری حلقه نقره می‌باشد. با این وجود، وابستگی حساسیت نانوزیست‌حسگر به طول حلقه بیشتر از ضخامت حلقه است.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Effect of size and position of silver metallic ring on the performance of optical nano biosensor based on coupled rod-ring nanostructure

نویسندگان English

Tahereh Zaki 1
Mahdi Sovizi 1
Maryam Aliannezhadi 2
1 Faculty of Physics, Semnan University, PO Box: 35195-363, Semnan, Iran
2 Faculty of Physics, Semnan University, PO Box: 35195-363, Semnan, Iran
چکیده English

In this paper, a coupled silver rod-ring nanostructure is proposed for tuning the LSPR wavelength of the plasmonic nanostructure, and the effect of various factors including the length and thickness of the silver ring, as well as the position of the ring on the optical response of the nanostructure is investigated. The results confirm the significant effect of the rod-ring coupling and the wide tunability of the nanostructure LSPR wavelength by changing the position of the ring. Studying the impacts of ring length and ring thickness on the optical response of the nanostructure also shows the importance of choosing the factors. The use of this nanostructure as a biosensor for oral cancer detection indicates that the sensitivity of this nanostructure is a function of the length and thickness of the silver ring as well as the location of the silver ring. However, the sensitivity of the nano biosensor depends on the ring length more than the ring thickness.

کلیدواژه‌ها English

Plasmonic nanostructure
Coupling
Optical response
Optical biosensor
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دوره 20، شماره 75
تابستان 1403
صفحه 29-38

  • تاریخ دریافت 24 اسفند 1402
  • تاریخ بازنگری 14 خرداد 1403
  • تاریخ پذیرش 19 تیر 1403