Pendulum-style adjustment of captured particles with fiber tweezers based on asymmetrical fiber tip for CARS system

We propose and demonstrate single optical fiber tweezers based on graded-index multimode fiber (MMF) which can adjust captured microparticles position in pendulum-style. The optical fiber tweezers can capture the yeast cell stably in three dimensions and swing the yeast cell 57.5 degrees around the fiber tip like a pendulum. The optical fiber tweezers are fabricated by asymmetrical fiber heating fused and tapered method. The capture and swing functions of the proposed optical fiber tweezers provide a new manipulation method for biomedical field.