Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 29 checked references that resolve
resolves10.1038/nnano.2014.29Engineering bright sub-10-nm upconverting nanocrystals for single-molecule imaging
resolves10.1021/la904596xMesoporous Silica Encapsulating Upconversion Luminescence Rare-Earth Fluoride Nanorods for Secondary Excitation
resolves10.1016/j.biomaterials.2010.01.040Dual-modality in vivo imaging using rare-earth nanocrystals with near-infrared to near-infrared (NIR-to-NIR) upconversion luminescence and magnetic resonance properties
resolves10.1021/nn402601dNd<sup>3+</sup>-Sensitized Upconversion Nanophosphors: Efficient<i>In Vivo</i>Bioimaging Probes with Minimized Heating Effect
resolves10.1016/j.addr.2006.07.004Two-photon microscopes and in vivo multiphoton tomographs — Powerful diagnostic tools for tissue engineering and drug delivery
resolves10.3390/s120302414Upconversion Nanomaterials: Synthesis, Mechanism, and Applications in Sensing
resolves10.1002/lpor.201200052Upconverting nanoparticles for pre‐clinical diffuse optical imaging, microscopy and sensing: Current trends and future challenges
resolves10.1021/cr020357gUpconversion and Anti-Stokes Processes with f and d Ions in Solids
resolves10.1073/pnas.0904792106Non-blinking and photostable upconverted luminescence from single lanthanide-doped nanocrystals
resolves10.1021/ac901960dHigh Contrast Upconversion Luminescence Targeted Imaging in Vivo Using Peptide-Labeled Nanophosphors
resolves10.1006/abio.1998.2965Detection of Cell and Tissue Surface Antigens Using Up-Converting Phosphors: A New Reporter Technology
resolves10.1039/C4NR05954AWater dispersible upconverting nanoparticles: effects of surface modification on their luminescence and colloidal stability
resolves10.1039/c0nr00253dAbsolute quantum yield measurements of colloidal NaYF4: Er3+, Yb3+ upconverting nanoparticles
resolves10.1021/jp107900zHigh Up-Conversion Efficiency of YVO<sub>4</sub>:Yb,Er Nanoparticles in Water down to the Single-Particle Level
resolves10.1021/cm051971mOptical Spectroscopy and Visible Upconversion Studies of YVO<sub>4</sub>:Er<sup>3+</sup> Nanocrystals Synthesized by a Hydrothermal Process
resolves10.1007/s10853-011-6035-1NIR-excited NIR and visible luminescent properties of amphipathic YVO4: Er3+/Yb3+ nanoparticles
resolves10.1021/jp907176xNew Insights into Size Effects in Luminescent Oxide Nanocrystals
resolves10.1016/0167-5877(93)90051-TA review of the red imported fire ant (Solenopsis invicta Buren) and its impacts on plant, animal, and human health
resolves10.1186/s12951-016-0175-zObservation of yttrium oxide nanoparticles in cabbage (Brassica oleracea) through dual energy K-edge subtraction imaging
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