Fig. 1From: 3D printing fabrication process for fine control of microneedle shapea The schematic diagram of SLA 3D printing. b The schematic diagram of 3D printing angle setting. c–d The schematic diagrams of original design and printed microneedles according to printing angles. e An image of 3D printing setting at the angle of 45°. f Printed molds (0–30°)Back to article page