Gelfand Ryan M, Wheaton Skylar, Gordon Reuven
Opt Lett. 2014 Nov 15;39(22):6415-7. doi: 10.1364/OL.39.006415.
We demonstrate the trapping of single 20 and 40 nm polystyrene spheres at the cleaved end of a fiber optic with a double nanohole aperture in gold and without any microscope optics. An optical transmission increase of 15% indicates a trapping event for the 40 nm particle, and the jump is 2% for the 20 nm particle. This modular technique can be used to replace those used with current optical trapping setups that require complicated free space optics and frequent calibration, with one that is modular and requires no free space optics. This simple arrangement with the potential for fiber translation is of interest for future biosensor and optical nano-pipette devices.
我们展示了在没有任何显微镜光学元件的情况下，利用金质双纳米孔孔径光纤的劈开端捕获单个20纳米和40纳米聚苯乙烯微球。对于40纳米的粒子，光透射率增加15%表明发生了捕获事件，而对于20纳米的粒子，该跃升为2%。这种模块化技术可用于取代当前光学捕获装置中使用的那些需要复杂自由空间光学元件和频繁校准的技术，取而代之的是一种模块化且无需自由空间光学元件的技术。这种具有光纤平移潜力的简单装置对于未来的生物传感器和光学纳米移液器装置具有重要意义。
