Scattering Imaging of Single Quantum Dots with Dark-Field Microscopy

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• 作者：Xiaobing Bu ; Huaping Chen ; Hongwei Gai ; Ronghua Yang ; Edward S Yeung
• 刊名：Analytical Chemistry
• 出版年：2009
• 出版时间：September 1, 2009
• 年：2009
• 卷：81
• 期：17
• 页码：7507-7509
• 全文大小：169K
• 年卷期：v.81,no.17(September 1, 2009)
• ISSN：1520-6882

文摘

Scattering images of single quantum dots (QDs) are obtained with a standard dark-field microscope at a video rate. The counts of QDs under dark-field remained constant while the scattering intensity decreased, providing direct proof of quantum dot photophysical bleaching as opposed to desorption or photodecomposition.