Existing pressure sensors struggle to balance high sensitivity and a wide pressure range. This paper introduces a novel pressure sensor using a ternary nanocomposite Fe₂O₃/C@SnO₂. The sea urchin-like Fe₂O₃ structure enhances signal transduction and protects against mechanical damage, while acetylene carbon black improves conductivity. The synergistic effects of Fe₂O₃/C, Fe₂O₃/SnO₂ and SnO₂@C structures expand the pressure response range. The sensor demonstrates high sensitivity (680 kPa⁻¹), fast response (10 ms), broad range (up to 150 kPa), and good reproducibility (over 3500 cycles under 110 kPa), showing promise for wearable electronics and health monitoring.

Xiu-man Wang, Lu-qi Tao, Min Yuan, Ze-ping Wang, Jiabing Yu, Dingli Xie, Feng Luo, Xianping Chen, ChingPing Wong