Chang Xiaoming
Physical Education College, Harbin Normal University, Harbin, 150001, Heilongjiang Province, China.
Discov Nano. 2023 Mar 1;18(1):28. doi: 10.1186/s11671-023-03788-7.
The flexible pressure sensor is expected to be applied in the new generation of sports wearable electronic devices. Developing flexible pressure sensors with a wide linear range and great sensitivity, however, remains a significant barrier. In this work, we propose a hybrid conductive elastomeric film oxide-based material with a concave-shape micro-patterned array (P-HCF) on the surface that sustainably shows the necessary sensing qualities. To enhance sensing range and sensitivity, one-dimensional carbon fibers and two-dimensional MXene are incorporated into the polydimethylsiloxane matrix to form a three-dimensional conductive network. Micro-patterns with a curved shape in P-HCFs can be able to linear sensitivity across the sensing range by controlling the pressure distribution inside the material. Besides, the sensitivity of P-HCF pressure sensor can reach 31.92 kPa, and meanwhile, the linear band of P-HCF pressure sensor can arrive at 24 Pa-720 kPa, which makes it a good choice for sports monitoring. The designed pressure sensor can be used to monitor the foot pressure during running. By analyzing the gait information during running, it can provide data support and strategy improvement for running. This new dual working mode pressure P-HCF sensor will provide a new way for the development of intelligent sports.
柔性压力传感器有望应用于新一代运动可穿戴电子设备中。然而，开发具有宽线性范围和高灵敏度的柔性压力传感器仍然是一个重大障碍。在这项工作中，我们提出了一种基于混合导电弹性体薄膜氧化物的材料，其表面具有凹形微图案阵列（P-HCF），可持续地展现出所需的传感特性。为了提高传感范围和灵敏度，将一维碳纤维和二维MXene纳入聚二甲基硅氧烷基体中，以形成三维导电网络。P-HCF中的弯曲微图案能够通过控制材料内部的压力分布，在整个传感范围内实现线性灵敏度。此外，P-HCF压力传感器的灵敏度可达31.92 kPa，同时，P-HCF压力传感器的线性范围可达24 Pa - 720 kPa，这使其成为运动监测的理想选择。所设计的压力传感器可用于监测跑步过程中的足部压力。通过分析跑步过程中的步态信息，可为跑步提供数据支持和策略改进。这种新型双工作模式的P-HCF压力传感器将为智能运动的发展提供新途径。
