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We present a novel all-fiber optical tweezer (OT) for biological applications. The tweezer is based on a new approach relying on total internal reflection in an annular core fiber or into a fiber bundle. The proposed device, whose trapping efficacy has been recently demonstrated experimentally, is extremely promising, also because optical manipulation and analysis functions can be easily added to...
The authors present a new, simple and low-cost, approach that allows obtaining an all optical 3-D single-fiber tweezers. The above mentioned limitations are overcome by using an annular core fiber (or a multifiber system characterised by an annular distribution of the cores) and by properly shaping the fiber-end, as a truncated cone. Exploiting the total reflection at the interface between the fiber...
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