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Weave-pattern-dependent fabric piezoelectric pressure sensors based on polyvinylidene fluoride nanofibers electrospun with 50 nozzles
npj Flexible Electronics ( IF 14.6 ) Pub Date : 2022-08-05 , DOI: 10.1038/s41528-022-00203-6
Da Bin Kim , Ju Han , Sun Min Sung , Min Seong Kim , Bo Kyoung Choi , Sung Jun Park , Hyae Rim Hong , Hong Je Choi , Byeong Kon Kim , Chung Hee Park , Jong Hoo Paik , Joon-Seok Lee , Yong Soo Cho

Wearable pressure sensors having versatile device structures have been extensively investigated to achieve high sensitivity under mechanical stimuli. Here, we introduce piezoelectric pressure sensors based on fabrics woven using polyvinylidene fluoride (PVDF) weft and polyethylene terephthalate (PET) warp yarns with different weave structures: 1/1 (plain), 2/2, and 3/3 weft rib patterns. The dependence of the pressure-sensing performance on the weave pattern is demonstrated with an actual large-scale fabric up to the ~2 m scale. An optimized pressure sensor with a 2/2 weft rib pattern produced a high sensitivity of 83 mV N−1, which was 245% higher than that of the 1/1 pattern. The detection performance of the optimal fabric was extensively evaluated with a variety of ambient input sources, such as pressing, bending, twisting, and crumpling, as well as various human motions. Further, a large all-fabric pressure sensor with arrayed touch pixel units demonstrated highly sensitive and stable sensing performance.



中文翻译:

基于具有 50 个喷嘴的电纺聚偏二氟乙烯纳米纤维的编织图案相关织物压电压力传感器

具有多功能设备结构的可穿戴压力传感器已被广泛研究,以在机械刺激下实现高灵敏度。在这里,我们介绍了基于使用聚偏二氟乙烯 (PVDF) 纬纱和聚对苯二甲酸乙二醇酯 (PET) 经纱编织的织物的压电压力传感器,这些织物具有不同的编织结构:1/1(平纹)、2/2 和 3/3 纬纱罗纹图案。压力传感性能对编织图案的依赖性通过高达~2 m 尺度的实际大型织物得到证明。具有 2/2 纬肋图案的优化压力传感器产生 83 mV N -1的高灵敏度,比 1/1 模式高 245%。最佳织物的检测性能通过各种环境输入源进行了广泛评估,例如压制、弯曲、扭曲和起皱,以及各种人体运动。此外,具有阵列触摸像素单元的大型全织物压力传感器展示了高灵敏度和稳定的传感性能。

更新日期:2022-08-05
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