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Characterizing Quantum-Dot Blinking Using Noise Power Spectra
Fluctuations in the fluorescence from macroscopic ensembles of colloidal
semiconductor quantum dots have the spectral form of 1/f noise. The measured
power spectral density reflects the fluorescence intermittency of individual
dots with power-law distributions of "on" and "off" times, and can thus serve
as a simple method for characterizing such blinking behavior
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