Liu, Q., Liu, Y., Shi, J., Liu, Z., Wang, Q. and Guo, C. F. (2021) “High-Porosity Foam-Based Iontronic Pressure Sensor with Superhigh Sensitivity of 9280 kPa−1”, Nano-Micro Letters, 14, p. 21. doi: 10.1007/s40820-021-00770-9.