Fig. 3. (a) Single CdSe QD PL spectra of the exciton states as a function of laser excitation powers and comparison of exciton PL spectra (b) between a bare single CdSe QD and a single CdSe QD on Au metal surface and (c) between a bare single CdSe QD and a single CdSe QD on the Ag metal surface to confirm the effect of resonant wavelengths on maximizing the local surface plasmon effects to obtain a higher resolution.
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