به دام انداختن ذرات پلی¬استایرن با استفاده از انبرک پلاسمونیکی
محورهای موضوعی : مهندسی الکترونیک
ابراهیم فولادی
1
(دانشجوی دکتری/دکتری مهندسی برق، دانشکده فنی مهندسی، دانشگاه آزاد اسلامی واحد فسا، ایران)
مجتبی صادقی
2
(گروه مهندسی برق،واحد شیراز،دانشگاه آزاد اسلامی،شیراز،ایران)
زهرا عادل پور
3
(گروه مهندسی برق،واحد شیراز،دانشگاه آزاد اسلامی،شیراز،ایران)
فرهاد بهادری جهرمی
4
(گروه مهندسی برق،واحد فسا،دانشگاه آزاد اسلامی،فسا،ایران)
کلید واژه: فیبر نوری, دو هسته¬ای, پلاسمونیک, انبرک, به دام اندازی.,
چکیده مقاله :
این تحقیق به تحلیل و بررسی استفاده از انبرک‌های پلاسمونیکی در زمینه بیوتکنولوژی با تمرکز بر روی یک انبرک فیبرنوری دو¬ هسته‌ای پلاسمونیک متمایل می¬پردازد. این انبرک با استفاده از نرم‌افزار کامسول طراحی و مدل‌سازی شده و توسط شبیه‌‌سازی‌های عددی، ظرفیت خود در به دام‌اندازی ذرات پلی‌استایرن در مقیاس نانو را به معرض نمایش می¬گذارد. نتایج به دست آمده از تحقیق نشان می‌دهد که تغییرات در پارامترهای مختلف هم¬چون طول موج مورد استفاده، شعاع ذره به دام افتاده، و ضریب شکست محیط مورد استفاده، به تغییر در نیروی به دام انداز منجر می‌شود. افزایش ضریب شکست محیط و ابعاد ذرات باعث افزایش چشم‌گیر در نیروی اعمالی می‌گردد، به‌ویژه در طول موج‌های کوتاه این مسئله نمایان‌تر است. این یافته‌ها نشان می‌دهد که ساختار پلاسمونیکی پیشنهادی دارای نیروی به دام‌انداز بسیار بالاست و این امر قابلیت ارتقاء محسوسی نسبت به تحقیقات قبلی را داراست. این پیشرفت‌ها در زمینه بیوتکنولوژی نه تنها امکان دستکاری دقیق¬تر و اثربخش‌تر ذرات در مقیاس نانو را ایجاد می‌نمایند، بلکه ایجاد فناوری‌های نوین در حوزه پزشکی و دیگر علوم زیستی را تسهیل می‌دهند. این پیشرفت‌ها به طور مستقیم و غیر مستقیم به بهبود سیستم‌های تشخیصی و درمانی نیز کمک خواهند کرد.
This research analyzes and examines the use of plasmonic tweezers in the field of biotechnology, focusing on an inclined twine-core plasmonic optical fiber tweezer. This tweezer was designed and modeled using COMSOL software and through numerical simulations, it exhibits its capacity to trap polystyrene particles on a nano-scale. The results obtained from the research show that changes in different parameters such as the wavelength used, the radius of the trapped particle, and the refractive index of the medium used, lead to changes in the trapping force. The increase in the refractive index of the environment and the dimensions of the particles causes a significant increase in the applied force, especially in short wavelengths, the problem is more visible. These findings show that the proposed plasmonic structure has a very high trapping force, and this has the ability to significantly improve compared to previous researches. These advances in the field of biotechnology not only allow for more accurate and effective manipulation of nanoscale particles, but also facilitate the creation of new technologies in the field of medicine and other biological sciences. These developments will directly and indirectly help to improve diagnostic and treatment systems.
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