Quantitative analysis of rotational fluctuation by use of fluorescentnanodiamond

为了定量研究荧光金刚石纳米颗粒的转动涨落，对荧光金刚石纳米颗粒中氮空位中心发射的荧光强度的时间轨迹进行了计算分析.我们发现，通过分析活体样本的光谱，可以澄清缓慢的旋转。对于随机涨落，自相关函数揭示了不同的弛豫时间依赖于粒子中多个NVC '组成的复合体的维数。

A computational analysis for a time trajectory of fluorescence intensity emitted from nitrogen-vacancy center in fluorescent diamond nanoparticle was evaluated for investigating quantitatively rotational fluctuation on the particle. We found that it is possible to clarify a slow rotation by analyzing the spectra taken for a living sample. As for random fluctuation, the autocorrelation function reveals different relaxation times dependent on a dimensionality of complex constituted of multiple NVCs’ in theparticle.