Srivatsa Shreyas, Sieber Paul, Hofer Céline, Robert André, Raorane Siddhesh, Marciszko-Wiąckowska Marianna, Grabowski Krzysztof, Nayak M M, Chatzi Eleni, Uhl Tadeusz
Space Technology Centre, AGH University of Science and Technology, 30-059 Krakow, Poland.
Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30-059 Krakow, Poland.
Sensors (Basel). 2023 Oct 14;23(20):8463. doi: 10.3390/s23208463.
MXenes are a new family of two-dimensional (2D) nanomaterials. They are inorganic compounds of metal carbides/nitrides/carbonitrides. Titanium carbide MXene (Ti3C2-MXene) was the first 2D nanomaterial reported in the MXene family in 2011. Owing to the good physical properties of Ti3C2-MXenes (e.g., conductivity, hydrophilicity, film-forming ability, elasticity) various applications in wearable sensors, energy harvesters, supercapacitors, electronic devices, etc., have been demonstrated. This paper presents the development of a piezoresistive Ti3C2-MXene sensor followed by experimental investigations of its dynamic response behavior when subjected to structural impacts. For the experimental investigations, an inclined ball impact test setup is constructed. Stainless steel balls of different masses and radii are used to apply repeatable impacts on a vertical cantilever plate. The Ti3C2-MXene sensor is attached to this cantilever plate along with a commercial piezoceramic sensor, and their responses for the structural impacts are compared. It is observed from the experiments that the average response times of the Ti3C2-MXene sensor and piezoceramic sensor are 1.28±0.24μs and 31.19±24.61μs, respectively. The fast response time of the Ti3C2-MXene sensor makes it a promising candidate for monitoring structural impacts.
MXenes是二维（2D）纳米材料的一个新家族。它们是金属碳化物/氮化物/碳氮化物的无机化合物。碳化钛MXene（Ti3C2-MXene）是2011年MXene家族中报道的第一种二维纳米材料。由于Ti3C2-MXenes具有良好的物理性能（如导电性、亲水性、成膜能力、弹性），已在可穿戴传感器、能量收集器、超级电容器、电子设备等方面得到了各种应用。本文介绍了一种压阻式Ti3C2-MXene传感器的开发，并对其在受到结构冲击时的动态响应行为进行了实验研究。为了进行实验研究，构建了一个倾斜球冲击试验装置。使用不同质量和半径的不锈钢球对垂直悬臂板施加可重复的冲击。将Ti3C2-MXene传感器与商用压电陶瓷传感器一起附着在该悬臂板上，并比较它们对结构冲击的响应。从实验中观察到，Ti3C2-MXene传感器和压电陶瓷传感器的平均响应时间分别为1.28±0.24μs和31.19±24.61μs。Ti3C2-MXene传感器的快速响应时间使其成为监测结构冲击的有前途的候选者。
