Open AccessScattering Imaging of Single Quantum Dots with Dark-Field Microscopy
Author(s) -
Xiaobing Bu,
Huaping Chen,
Hongwei Gai,
Ronghua Yang,
Edward S. Yeung
Publication year - 2009
Publication title -
analytical chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.117
H-Index - 332
eISSN - 1520-6882
pISSN - 0003-2700
DOI - 10.1021/ac901410w
Subject(s) - chemistry , quantum dot , dark field microscopy , scattering , microscopy , field (mathematics) , microscope , optics , optoelectronics , physics , mathematics , pure mathematics
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.
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