Cetin Oyku, Cicek Melih Ogeday, Cugunlular Murathan, Bolukbasi Tufan, Khan Yaqoob, Unalan Husnu Emrah
Department of Metallurgical and Materials Engineering, Middle East Technical University (METU), Ankara, 06800, Turkiye.
NanoElectronics Group, MESA+Institute for Nanotechnology and BRAINS Center for Brain-Inspired Nano Systems University of Twente, Enschede, 7500AE, Netherlands.
Small. 2024 Nov;20(45):e2403202. doi: 10.1002/smll.202403202. Epub 2024 Jul 29.
Iontronic pressure sensors hold significant potential to emerge as vital components in the field of flexible and wearable electronics, addressing a variety of applications spanning wearable technology, health monitoring systems, and human-machine interactions. This study introduces a novel iontronic pressure sensor structure based on a seamlessly deposited TiCT MXene layer onto highly porous melamine foam as parallel plate electrodes and an ionically conductive electrolyte of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide/thermoplastic polyurethane coupled with carbon cloth as current collecting layers for improved sensitivity and high mechanical stability of more than 7000 cycles. MXene-deposited melamine foam-based iontronic pressure sensors (MIPS) showed a high sensitivity of 5.067 kPa in the range of 45-60 kPa and a fast response/recovery time of 28/18 ms, respectively. The high sensitivity, high mechanical stability, and fast response/recovery time of the designed sensor make them highly promising candidates for real-time body motion monitoring. Moreover, sensors are employed as a smart numpad for integration into advanced ATM security systems utilizing machine learning algorithms. This research marks a significant advance in iontronic pressure sensor technology, offering promising avenues for application in wearable electronics and security systems.
离子电子压力传感器在柔性和可穿戴电子领域作为关键组件具有巨大潜力，可应用于可穿戴技术、健康监测系统和人机交互等多种领域。本研究介绍了一种新型离子电子压力传感器结构，该结构基于在高度多孔的三聚氰胺泡沫上无缝沉积TiCT MXene层作为平行板电极，以及1-乙基-3-甲基咪唑双（三氟甲基磺酰）亚胺/热塑性聚氨酯与碳布耦合作为集流层的离子导电电解质，以提高灵敏度和超过7000次循环的高机械稳定性。基于MXene沉积的三聚氰胺泡沫的离子电子压力传感器（MIPS）在45-60 kPa范围内显示出5.067 kPa的高灵敏度，响应/恢复时间分别为28/18 ms。所设计传感器的高灵敏度、高机械稳定性和快速响应/恢复时间使其成为实时人体运动监测的极具潜力的候选者。此外，传感器被用作智能数字键盘，用于集成到利用机器学习算法的先进自动取款机安全系统中。这项研究标志着离子电子压力传感器技术的重大进展，为可穿戴电子设备和安全系统的应用提供了有前景的途径。
