柔性电子:受生物启发的微裂缝和连锁可穿戴压力传感器用于全范围人机接口

在这里插入图片描述

摘要:
先讲一下柔性可穿戴器件的巨大潜力
Flexible wearable pressure sensors have drawn tremendous interest for various applications in wearable healthcare monitoring, disease diagnostics, and human–machine interaction

但是有限制:感知压力范围,在低压下的低感知灵敏度,高压下的机械柔性,复杂的制造过程限制应用
However, the limited sensing range (<10%), low sensing sensitivity at small strains, limited mechanical stability at high strains, and complicated fabrication process restrict the extensive applications of these sensors for ultrasensitive full-range healthcare monitoring

将本论文中制造的结构:
Herein, a flexible wearable pressure sensor is presented with a hierarchically microstructured framework combining microcrack and interlocking, bioinspired by the crack-shaped mechanosensory systems of spiders and the wing-locking sensing systems of beetles

讲器件的性能:0.2-80%的形变,快速响应/恢复,高灵敏度,极低的检测阈值,1000个周期的耐久度
The sensor exhibits wide full-range healthcare monitoring under strain deformations of 0.2–80%, fast response/recovery time (22 ms/20 ms), high sensitivity, the ultrasensitive loading sensing of a feather (25 mg), the potential to predict the health of patients with early-stage Parkinson’s disease with the imitated static tremor, and excellent reproducibility over 10 000 cycles.

此外,能用于E-skins,感知压力分布和接触形状,也能集成到机器人的腿和接到无线发射机上。
The sensor exhibits wide full-range healthcare monitoring under strain deformations of 0.2–80%, fast response/recovery time (22 ms/20 ms), high sensitivity, the ultrasensitive loading sensing of a feather (25 mg), the potential to predict the health of patients with early-stage Parkinson’s disease with the imitated static tremor, and excellent reproducibility over 10 000 cycles.

实验章节

材料:

过硫酸铵[Ammonium persulfate],
浓高氯酸[concentrated perchloric acid]
浓硫酸[concentrated sulfuric acid]
高锰酸钾[potassium permanganate]
肼[ N 2 H 4 H 2 O N_2H_4·H_2O ]
: 北京化工试剂厂

苯胺(distilled before use) : 百灵威化学 J&K Chemical

石墨烯薄片 graphite flakes: Sigma-Aldrich
美国生命科学与高科技集团公司

GO: c采用改进的Hummer 方法[52]
PU:
智能机器人: Alibaba group 阿里巴巴集团

微裂缝的RGO片层包覆的PU泡泡沫

  • 聚氨酯海绵(PU sponge) 2.5 × 2.5 × 1 c m 2.5 \times 2.5 \times 1cm 使用氧气等离子体预先处理5min,增加亲水性(hydrophilicity) 此步骤非必须
  • 将PU海绵浸入到GO溶液中(0.05mg/mL),将GO薄片集成到PU海绵上
  • 接下来残留在PU海绵上的GO片材,干燥
  • 将PU海绵浸入到60mL的水和肼( N 2 H 4 H 2 O N_2H_4 \cdot H_2O ), 120摄氏度, 1h。将GO还原到RGO。
  • 最后在PU海面上获得C-RGO片层

在微裂缝RGO片材上的PANI纳米阵列的准备

典型的过程:
将上一步获得材料浸入到40mL的 1M HClO4中,包含60uL的苯胺单体 (aniline monomer),之后,将99.95mg的APS添加到10mL的1MHClO4溶液中,搅拌知道溶解。将溶液倒入上述预制备的包含苯胺单体的溶液中,在5摄氏度下聚合8,16,24,32h

电子皮肤的制作

注意看一下这个是具体怎么实现的
使用(65 mm × 65 mm × 10 mm)的海绵制作5 × 5的感知阵列。将银胶料滴到上表面形成5 ×5的电极分布,行和列分别用铜导线连接。同样的方法在下表面执行一遍,最后在两边覆盖一层绝缘层PDMS作为封装。

上表面用行,下表面用列?

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转载自blog.csdn.net/dss_dssssd/article/details/85694476
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