Journal of Bionic Engineering ›› 2025, Vol. 22 ›› Issue (5): 2550-2560.doi: 10.1007/s42235-025-00757-x
Biomimetic Engineering High-Sensitivity Flexible Pressure Sensors with Ultra-Wide Pressure Detection Range via Synergistic Interlocked Structures and Multi-scale Micro-dome Interfaces
Junqiu Zhang1,4; Jiachao Wu1; Lili Liu1; Tao Sun1; Xiangbo Gu1; Zijian Shi1; Xueyang Li1; Xueping Zhang1; Yu Chen1; Jiqi Gao1; Kejun Wang2; Bin Zhu3; Wenze Sun1; Yutao Mei1; Yubo Yan1; Yan Li1; Zhijing Wu1; Zhiwu Han1,4; Luquan Ren1
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1 Key Laboratory of Bionic Engineering, Ministry ofEducation, Jilin University, Changchun130022, People’s Republic of China
2 Jiangsu Provincial Key Laboratory of Advanced Robotics,Soochow University, Suzhou215123, People’s Republic of China 3 Dept Mech Engn Sci, Bioinspired Mat Grp, University ofSurrey, Guildford, Surrey GU2 7XH, England
4 Liaoning Academy Materials, Shenyang110167, People’s Republic of China
Biomimetic Engineering High-Sensitivity Flexible Pressure Sensors with Ultra-Wide Pressure Detection Range via Synergistic Interlocked Structures and Multi-scale Micro-dome Interfaces
Junqiu Zhang1,4; Jiachao Wu1; Lili Liu1; Tao Sun1; Xiangbo Gu1; Zijian Shi1; Xueyang Li1; Xueping Zhang1; Yu Chen1; Jiqi Gao1; Kejun Wang2; Bin Zhu3; Wenze Sun1; Yutao Mei1; Yubo Yan1; Yan Li1; Zhijing Wu1; Zhiwu Han1,4; Luquan Ren1#br#
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1 Key Laboratory of Bionic Engineering, Ministry ofEducation, Jilin University, Changchun130022, People’s Republic of China
2 Jiangsu Provincial Key Laboratory of Advanced Robotics,Soochow University, Suzhou215123, People’s Republic of China 3 Dept Mech Engn Sci, Bioinspired Mat Grp, University ofSurrey, Guildford, Surrey GU2 7XH, England
4 Liaoning Academy Materials, Shenyang110167, People’s Republic of China
摘要： Flexible pressure sensors have excellent prospects in applications of human-machine interfaces, artificial intelligence and human health monitoring due to their bendable and lightweight characteristics compared to rigid pressure sensors. However, arising from the limited compressibility of soft materials and the hardening of microstructures at the device interface, there is always a trade-off between high sensitivity and broad sensing range for most flexible pressure sensors, which results in a gradual saturation response and limits their practical applications. Herein, inspired by the distinct pressure perception function of crocodile receptors, a highly sensitive and wide-range flexible pressure sensor with multiscale microdomes and interlocked architecture is developed via a facile PS-decorated molding method. Combined with interlocked architecture, the multiscale dome-shaped structured interface enhances the compressibility of the material through structural complementarity, increases the contact area between functional materials, which compensates for the stiffness induced by the deformation of dense microscale columns. This effectively mitigates structural hardening across a wide pressure range, leading to the overall high performance of the sensor. As a result, the obtained sensor exhibits a low detection limit of 5 Pa, a high sensitivity of 6.14 kPa??1, a wide measurement range up to 231 kPa, short response/recovery time of 56 ms/69 ms, outstanding stability over 10,000 cycles. Considering these excellent properties, the sensor shows promising potential in health monitoring, human-computer interaction, wearable electronics. This study presents a strategy for the fabrication of flexible pressure sensors exhibiting high sensitivity and a wide pressure response range.