مشخصات پژوهش

عنوان	Creation of rotating spiral structures using interfering Bessel beams for optical manipulation
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Bessel beams, Beam manipulation, optical tweezer, Optical force
چکیده	A simple and effective optical tweezer setup which uses the interference of two counter propagating Bessel beams is proposed and investigated. The potential energy of a Rayleigh particle in the generated interference patterns is numerically evaluated by writing a MATLAB code. A rigorous analytical treatment is also performed for verification of the numerical results. The results show that the generated patterns have a spiral structure. It is also found that these spiral patterns and consequently the trapped particles can be rotated about the axis of the patterns by introducing a phase difference between the two beams. The suggested setup is hoped to provide an effective way for guiding particles along the spiral trajectories, making a laser-driven micro- and nanomotor, measuring the torsional properties of biological molecules, and separating particles from a liquid mixture according to their mass, size, or refractive index.
پژوهشگران	سرکیو عبدالکریم (نفر دوم)، عبدالله حسن زاده (نفر سوم)، محمد باقر محمد نژاد زنجانی (نفر اول)