Fig. 3: Summary of targeted super-resolution techniques based on UCL emission saturation of lanthanide ion-doped UCNPs.
From: Lanthanide ion-doped upconversion nanoparticles for low-energy super-resolution applications
a Simulated solid, donut, and super-resolution FED PSFs, and corresponding intensity profiles of saturated UCL emission of lanthanide ion-doped UCNPs. Adapted with permission from ref. 72 Copyright 2017 Optical Society of America72. b Solid, donut, and super-resolution FED microscopy imaging, and corresponding intensity profiles of saturated UCL emission of lanthanide ion-doped UCNPs. Image size: 1.56 μm. Adapted with permission from ref. 72 Copyright 2017 Optical Society of America72. c Simulated ‘negative’ contrast images of cross-section profiles of the saturated UCL emission of a lanthanide ion-doped UCNP used in NIRES nanoscopy at different excitation intensity. Scale bar: 500 nm. Reproduced with permission from ref. 73, CC BY 4.0. Copyright 2018 Springer Nature Limited73. d NIRES nanoscopy imaging and corresponding intensity profiles of lanthanide ion-doped UCNPs with different doping. Scale bar: 500 nm. Adapted with permission from ref. 73, CC BY 4.0. Copyright 2018 Springer Nature Limited73. e Schematic of the super-resolution NSIM setup using lanthanide ion-doped UCNPs. Reproduced with permission from ref. 76. Copyright 2020 American Chemical Society76. f UCL emission imaging of lanthanide ion-doped UCNPs with 80 μm thick brain tissues under sinusoidal structured excitation and line profile of Fourier spectrum on a logarithmic scale of the diagonal cross-section profiles. Adapted with permission from ref. 76. Copyright 2020 American Chemical Society76. g Wide-field and super-resolution NSIM imaging of lanthanide ion-doped UCNPs. Scale bar: 2 μm. Reproduced with permission from ref. 76. Copyright 2020 American Chemical Society76. h Comparison imaging results of the green framed area in (g), and corresponding intensity profiles of lanthanide ion-doped UCNPs. Scale bar: 1 μm. Reproduced with permission from ref. 76. Copyright 2020 American Chemical Society76
