Gu Min, Cao Yaoyu, Castelletto Stefania, Kouskousis Betty, Li Xiangping
Center for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn VIC 3122, Australia.
Opt Express. 2013 Jul 29;21(15):17639-46. doi: 10.1364/OE.21.017639.
In this paper, we show super-resolving single nitrogen vacancy (NV) centers with a sub-20 nanometer resolution in a wide-field localization microscope based on the discovery of photoluminescence blinking in high-pressure high-temperature nanodiamonds (NDs). The photon statistics reveals that NDs containing not only single but also multiple NV centers show photoluminescence blinking. The combination of an atomic force microscope and an optical localization microscope built on the blinking feature enables the optically resolved two NV centers within single NDs for the first time. Our method establishes new avenues for studying nanoscale photon dynamics associated with single NV centers within NDs together with ND-based ultra-sensitive bioimaging devices.
在本文中，基于对高压高温纳米金刚石（NDs）中光致发光闪烁现象的发现，我们展示了在宽场定位显微镜中具有亚20纳米分辨率的超分辨单个氮空位（NV）中心。光子统计结果表明，不仅含有单个NV中心，而且含有多个NV中心的NDs均表现出光致发光闪烁现象。基于这种闪烁特性构建的原子力显微镜和光学定位显微镜相结合，首次实现了在单个NDs中对两个NV中心进行光学分辨。我们的方法为研究与NDs内单个NV中心相关的纳米级光子动力学以及基于ND的超灵敏生物成像设备开辟了新途径。
