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Nano Convergence
Fig. 2 | Nano Convergence

Fig. 2

From: Upconverting-photon quenching-mediated perforation influx as an intracellular delivery method using posAuNP@UCNPs nanocomposites for osteoarthritis treatment

Fig. 2

Morphological and physical properties of posAuNP@UCNPs with different UCNP ratios. A TEM images showing the morphological properties of posAuNPs at different UCNP ratios. The ratio of UCNP to posAuNP was varied from 0 to 10 to analyze the effect of the ratio on the morphology and properties of the particles. Scale bar, 40 nm. B Schematic diagram illustrating the excitation and upconversion emission of UCNPs and the plasmonic absorption of AuNPs. This illustrates how the 545 nm upconverting photons emitted by UCNP can be absorbed by AuNP, leading to photoluminescence quenching. C Photoluminescence intensity of posAuNP@UCNPs hybrids as a function of posAuNP ratio. D FEM simulations showing the E-field distribution of posAuNP@UCNPs hybrids as a function of UCNP ratio at wavelengths of 980 nm and 545 nm

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