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. Author manuscript; available in PMC: 2011 Jul 15.
Published in final edited form as: Biosens Bioelectron. 2010 Apr 7;25(11):2431–2435. doi: 10.1016/j.bios.2010.03.038

Figure 2.

Figure 2

Photoluminescence spectrum of the NaYF4:Yb3+,Tm3+ nanoparticles, excited by a 980 nm diode laser. The excitation and emission spectra of SYBR Green I are included for comparison.