Chung Inhee, Witkoskie James B, Cao Jianshu, Bawendi Moungi G
Department of Chemistry and Center for Materials Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Jan;73(1 Pt 1):011106. doi: 10.1103/PhysRevE.73.011106. Epub 2006 Jan 20.
This paper analyzes the observed phenomenology of the fluorescence time trace of collections of quantum dots (QDs) in terms of the model parameters that characterize the fluorescence blinking statistics of single QDs. We demonstrate that the non-universal dynamics that appear in fluorescence time traces of collections of QDs at short time scales are related to the universal dynamics that appear at longer time scales. We explore how the extent of time separation between the short and long dynamics affects the transition region and the dynamics at longer time scales. We suggest a methodology to extract single QD statistical model parameters from experimental fluorescence time traces of collections of QDs. We explore theoretical time traces and their experimental analogs for three different cases that span the diverse nonuniversal dynamics that appear at short time scales.
本文根据表征单个量子点荧光闪烁统计特性的模型参数，分析了量子点（QD）集合荧光时间轨迹的观测现象学。我们证明，在短时间尺度下量子点集合荧光时间轨迹中出现的非普适动力学与长时间尺度下出现的普适动力学相关。我们探究了短时间和长时间动力学之间的时间分离程度如何影响过渡区域以及长时间尺度下的动力学。我们提出了一种从量子点集合的实验荧光时间轨迹中提取单个量子点统计模型参数的方法。我们针对跨越短时间尺度出现的各种非普适动力学的三种不同情况，探究了理论时间轨迹及其实验类似物。
