将荧光纳米金刚石接枝到光学针尖上
Grafting fluorescent nanodiamonds onto optical tips
摘要：
我们最近（Optics Express 17，19969（2009））介绍了一种全光学方法，用于将具有单色心占据的单个20 nm纳米金刚石接枝到光学尖端的顶点上，并将所得单光子尖端用于在室温下扫描近场成像，从而实现在环境条件下工作的真正的扫描单光子显微镜。描述了这种方法的变体，其允许将几个纳米金刚石附着到尖端顶点上，同时释放它们，并最终通过扫描尖端逐个重新捕获它们。这强调了我们的方法及其变体的灵活性和强大性，其可用于固定数量的选定光学活性纳米物体需要以纳米精度在明确定义的位置处定位或重新定位的应用中。
英文摘要：
We recently (Optics Express 17, 19969 (2009)) introduced an all-optical method for grafting onto the apex of an optical tip a single 20 nm nanodiamond with single color-center occupancy and used the resulting single-photon tip in scanning near-field imaging at room temperature, thereby achieving a genuine scanning single-photon microscopy working in ambient conditions. A variant of this method is described that allows for attaching several nanodiamonds onto the tip apex, releasing them all at once and finally recapturing them one by one by the scanning tip. This underlines the flexibility and powerfulness of our method and its variant that could be used in applications where a fixed number of selected optically active nano-objects requires positioning, or repositioning, at well defined locations with nanometer accuracy.
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