Roh, Hyeonhee, Young Jun Yoon, Jin Soo Park, Dong‑Hyun Kang, Seung Min Kwak, Byung Chul Lee, and Maesoon Im. 2021. “Fabrication of High-Density Out-of-Plane Microneedle Arrays With Various Heights and Diverse Cross-Sectional Shapes”. Nano-Micro Letters 14 (December):24. https://doi.org/10.1007/s40820-021-00778-1.