Ultrasensitive, Fast-Responsive, Directional Airflow Sensing by Bioinspired Suspended Graphene Fibers,Nano Letters

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Ultrasensitive, Fast-Responsive, Directional Airflow Sensing by Bioinspired Suspended Graphene Fibers
Nano Letters ( IF 9.6 ) Pub Date : 2023-01-09 , DOI: 10.1021/acs.nanolett.2c04228
Libei Huang ₁ , Yong Liu ₁ , Geng Li ₁ , Yun Song ₁ , Jianjun Su ₁ , Le Cheng ₁ , Weihua Guo ₁ , Ganggang Zhao ₂ , Hanchen Shen ₃ , Zheng Yan _{2,

4} , Ben Zhong Tang ₅ , Ruquan Ye _{1,

6}

Affiliation

The development of high-performance miniaturized and flexible airflow sensors is essential to meet the need of emerging applications. Graphene-based airflow sensors are hampered by the sluggish response and recovery speed and low sensitivity. Here we employ laser-induced graphene (LIG) with poststructural biomimicry for fabricating high-performance, flexible airflow sensors, including cotton-like porous LIG, caterpillar fluff-like vertical LIG fiber, and Lepidoptera scale-like suspended LIG fiber (SLIGF) structures. The structural engineering changes the deformation behavior of LIGs under stress, among which the synchronous propagation of the scale-like structure of SLIGF is the most conducive to airflow sensing. The SLIGF achieves the shortest average response time of 0.5 s, the highest sensitivity of 0.11 s/m, and a record-low detection threshold of 0.0023 m/s, benchmarked against the state-of-the-art airflow sensors. Furthermore, we showcase the SLIGF airflow sensors in weather forecasting, health, and communications applications. Our study will help develop next-generation waterflow, sound, and motion sensors.

中文翻译：

Bioinspired 悬浮石墨烯纤维的超灵敏、快速响应、定向气流传感

开发高性能小型化和灵活的气流传感器对于满足新兴应用的需求至关重要。基于石墨烯的气流传感器受到响应和恢复速度缓慢以及灵敏度低的阻碍。在这里，我们采用具有后结构仿生学的激光诱导石墨烯 (LIG) 来制造高性能、灵活的气流传感器，包括类棉花多孔 LIG、类毛毛虫垂直 LIG 纤维和类鳞翅目鳞片悬浮 LIG 纤维 (SLIGF) 结构. 结构工程改变了LIG在应力下的变形行为，其中SLIGF鳞片状结构的同步传播最有利于气流传感。SLIGF实现了0.5秒的最短平均响应时间，0.11秒/米的最高灵敏度，和创纪录的低检测阈值 0.0023 m/s，以最先进的气流传感器为基准。此外，我们还展示了天气预报、健康和通信应用中的 SLIGF 气流传感器。我们的研究将有助于开发下一代水流、声音和运动传感器。

更新日期：2023-01-09

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