Roh, H., Yoon, Y. J., Park, J. S., Kang, D., Kwak, S. M., Lee, B. C. and Im, M. (2021) “Fabrication of High-Density Out-of-Plane Microneedle Arrays with Various Heights and Diverse Cross-Sectional Shapes”, Nano-Micro Letters, 14, p. 24. doi: 10.1007/s40820-021-00778-1.