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Dynamic response study of Ti3C2-MXene films to shockwave and impact forces

机译：Ti3C2-MxENE薄膜在冲击波和冲击力的动态响应研究

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MXenes (Titanium Carbide, Ti _(3) C _(2) -MXene) are two-dimensional nanomaterials that are known for their conductivity, film-forming ability, and elasticity. Though literature reports the possibility of usage of Ti _(3) C _(2) -MXenes for sensor development, the material properties and response need be studied in detail for designing sensors to measure dynamic variables like force, displacement, etc. , in a dynamic environment. Ti _(3) C _(2) -MXenes due to their good electro-mechanical properties can be used for manufacturing sensing elements for engineering and biomedical applications. This paper focuses on an investigation of the dynamic response properties of Ti _(3) C _(2) -MXenes subjected to shockwave and impact forces. A supersonic shockwave (Mach number: 1.68, peak overpressure: 234.3 kPa) produced in a shock tube acts as an external force on the Ti _(3) C _(2) -MXene film placed inside the shock tube. In the experiment performed, the response time of the Ti _(3) C _(2) -MXene film sample has been observed to be in the range of few microseconds (～7 μs) for the high-velocity shock. In a separate experiment, Ti _(3) C _(2) -MXene film samples are subjected to low-velocity impact forces through a ball drop test. The results from the ball drop test provide a response time in the range of few milliseconds (average ～1.5 ms). In this novel demonstration, the Ti _(3) C _(2) -MXene film sample responds well for both low-velocity mechanical impact as well as high-velocity shockwave impact. Further, the repeatability of the dynamic response of the Ti _(3) C _(2) -MXene film sample is discussed along with its significant piezoresistive behavior. This work provides the basis for sensor development to measure the dynamic phenomena of pressure changes, acoustic emissions, structural vibrations, etc.
机译：MXENES（碳化钛，Ti _（3）C _（2）-m-烯）是其导电，成膜能力和弹性的二维纳米材料。尽管文献报告了使用Ti _（3）C _（2）-mxEnes的可能性，但对于传感器开发，需要详细研究材料性质和响应，以便设计传感器以测量力，位移等的动态变量。动态环境。 Ti _（3）C _（2）-MxENS由于其良好的电力机械性能而可用于制造工程和生物医学应用的传感元件。本文侧重于对受冲击波和冲击力进行冲击力和冲击力的Ti _（3）C _（2）-mxenes的动态响应性能的研究。超声波冲击波（Mach编号：1.68，峰值过度压力：234.3kPa）在击向管中产生的作为外力作为放置在冲击管内的Ti _（3）C _（2）-mxene薄膜上。在进行的实验中，已经观察到Ti _（3）C _（2）-mxe膜样品的响应时间为高速冲击的几微秒（〜7μs）的范围。在单独的实验中，Ti _（3）C _（2）-mxene薄膜样品通过球滴测试进行低速冲击力。来自滚珠滴测试的结果提供了几毫秒（平均约为1.5毫秒）的响应时间。在这种新颖的演示中，Ti _（3）C _（2）-mxene薄膜样品对低速机械冲击以及高速冲击波的影响良好。此外，与其显着的压阻性行为一起讨论了Ti _（3）C _（2）-mxe膜样品的动态响应的可重复性。这项工作为传感器开发提供了衡量压力变化，声排放，结构振动等动态现象的基础。

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