Fig. 1From: Perovskite quantum dots modulating upconversion nanomaterials for cancer early detectionsSchematic diagram of the preparation and principle of the novel fluorescent probe MB-UCNP@SiO2 + QDs based on the combination of UCNPs and QDs. A Preparation process of the novel composite material UCNP@SiO2 + QDs. B Detection process of miRNA by the novel fluorescent probe MB-UCNP@SiO2 + QDsBack to article page