Li Xiying, Zhang Jia Ming, Duan Huiling
State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, BIC-EAST, College of Engineering, Peking University, Beijing 100871, China.
College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China.
ACS Appl Mater Interfaces. 2025 Feb 19;17(7):11268-11277. doi: 10.1021/acsami.4c19022. Epub 2025 Feb 9.
The development of pressure sensors with enhanced sensitivity, expanded working range, and versatile yet decoupling detection capabilities is critical for advancing robotics and medical applications. This work presents a novel pressure sensor design utilizing the distinct responses of dual-sized microspheres to external pressure that achieves a high sensitivity of 20 kPa and an expanded pressure range of 0.1-70 kPa, enabling continuous and precise pressure detection. Functional material coatings further enhance the performance of the sensor, demonstrated here with a PEDOT:PSS layer for temperature sensing with a sensitivity of 4 × 10 K, while effectively decoupling temperature and pressure signals. The resulting bimodal sensor features a rapid pressure response (200 ms), low hysteresis, and exceptional durability, maintaining reliable performance over 3000 cycles. With its simple fabrication process and robust sensing capabilities, the sensor is validated through diverse applications, including gesture recognition, tactile perception in soft robotics, and handwriting detection using sensor arrays. This sensor design with dual-sized microspheres demonstrates significant potential for next-generation electronic skin, perceptive robotics, and intelligent wearable electronics, offering a versatile and practical approach to multifunctional sensing.
开发具有更高灵敏度、更宽工作范围以及多功能且解耦检测能力的压力传感器对于推动机器人技术和医疗应用至关重要。这项工作提出了一种新颖的压力传感器设计，该设计利用双尺寸微球对外部压力的不同响应，实现了20 kPa的高灵敏度和0.1 - 70 kPa的扩展压力范围，能够进行连续且精确的压力检测。功能材料涂层进一步提升了传感器的性能，在此展示了用于温度传感的PEDOT:PSS层，其灵敏度为4×10 K，同时有效地解耦了温度和压力信号。由此产生的双峰传感器具有快速的压力响应（200毫秒）、低滞后和出色的耐久性，在3000次循环中保持可靠性能。凭借其简单的制造工艺和强大的传感能力，该传感器通过多种应用得到验证，包括手势识别、软机器人中的触觉感知以及使用传感器阵列的笔迹检测。这种采用双尺寸微球的传感器设计在下一代电子皮肤、感知机器人和智能可穿戴电子设备方面展现出巨大潜力，为多功能传感提供了一种通用且实用的方法。
