Fig. 2From: Restorative biodegradable two-layered hybrid microneedles for melanoma photothermal/chemo co-therapy and wound healingA Photograph of A1 HA MN, A2 Cur NDs/HA MN, A3 IR820/HA MN, and A4 Cur NDs/IR820/HA MN. B The bright-field micrographs of HA MN (B1–B3). C SEM images of Cur NDs/IR820/HA MN. D SEM image of Cur NDs. E Size distribution of Cur NDs. F SEM image of the SA/Ge/HA backing layer scaffoldBack to article page