Fig. 4 | Nature Communications

Fig. 4

From: 3D sub-diffraction imaging in a conventional confocal configuration by exploiting super-linear emitters

Fig. 4

High (8%) Tm doping in UCNPs improves uSEE microscopy performance. a The 8% Tm doped UCNPs have a steeper super-linear slope than the 4% Tm doped UCNPs. b The lateral resolution vs emission graph shows that while imaging at the same resolution, the 8% Tm doped particles have brighter emission. c The lateral resolution vs peak excitation power density graph shows that while imaging at the same excitation power, the 8% Tm doped UCNPs offer better lateral resolution. The data for 4% Tm-doped sample are marked in green and the 8% Tm-doped sample in blue

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