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 N2H4⋅H2O]
: 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 2.5×2.5×1cm使用氧气等离子体预先处理5min，增加亲水性(hydrophilicity)此步骤非必需将PU海绵浸入到GO溶液中(0.05mg/mL),将GO薄片集成到PU海绵上接下来去掉残留在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 N2H4⋅H2O), 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，搅拌直到溶解。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？
introduction
还是老话，柔性可穿戴压力传感器在。。。。领域有很多潜在应用：
Flexible wearable pressure sensors have attracted considerable attention for their substantial applications in various wearable electronic sensing,[1–7] healthcare monitoring,[8–13] disease diagnostics,[14] human–machine interaction,[15–17] and smart robot prosthesis devices.[18]
最近有好的器件出现，基于电容感应，压电检测，摩擦点感知和压阻感知：
Recently, various wearable pressure sensors with excellent sensitivity, robust flexibility, and good reproducibility have been well developed from typical pressure-sensitive transistors[ 19–22] and have capacitive sensing,[23,24] piezoelectric monitoring,[25,26] triboelectric sensing,[27,28] and piezoresistive sensing mechanisms.[29,30]
其中，压阻由于集成简单，灵敏度高，将机械振动转化为电阻变化仪器极大研究兴趣
Among them, piezoresistive pressure sensors have drawn tremendous research interest for their simple device assembly and excellent sensing sensitivities and for their ability to monitor mechanical variations by transferring the mechanical load of nanostructured conducting material layers into a change in resistance.[31]
接下来讲传统压力传感器的缺点：
However, traditional piezoresistive sensors made of metallic materials, semiconductive materials, or elastomeric substrates coated with nanomaterial (e.g., carbon nanotubes and graphene) layers usually demonstrate narrow monitoring ranges (<10%), lower sensing sensitivity at small strains from the steady sensing material connections, and limited mechanical stability at high strains.
不能满足全范围医疗检测的要求：复杂变形，微小振动
Traditional piezoresistive electronic sensors cannot meet the requirements of full-range healthcare monitoring devices, such as elaborate deformations (e.g., breathing, pulse throbbing, and phonation) and substantial movements (e.g., arm bending, coughing, and joint movements).
因此，需要这样的器件：高灵敏度，大的伸缩性，宽的感知范围，快速响应和恢复，可兼容的
Therefore, wearable pressure sensors with high sensitivity, large stretchability, broad sensing range, fast response/recovery, and reliable compatibility are highly desirable to imitate the multimodal sensing characteristics of human skin with full-range healthcare monitoring.[33–35]
下一段：
有两个要求： 低压的高灵敏度和高压的可恢复性
Wearable pressure sensors for full-range healthcare monitoring require the ultrasensitive sensing of subtle variations in the strain of material nanostructures and the reversibly and stably nanostructured connections of sensing large-strain deformations in materials
接下里讲了灵感来源。。：
蜘蛛：裂纹状的振动敏感器官
Spiders have been regarded as the most sensitive animals to environmental vibrations due to their crack-shaped vibration-sensitive slit organ embedded in the exoskeleton.[36]
基于这种灵感，已经研制出了一些裂纹状的压力传感器，
Inspired by the mechanosensory systems in spiders, researchers have established various crack-shaped wearable pressure sensors, which benefit from the reversible
crack connection.[37–40]
缺点：大多数该结构在高的压力下导电通路会损坏，所以在大压力变形下应用会受限。
However, most crack-shaped pressure sensors exhibit a limited monitoring range due to easily damaged conducting pathways, and their applications in real-time detections of large-strain deformations are inhibited
另一种结构：在流动条件下的可逆交联结构 hair-to-hair
Meanwhile, the interesting biological mechanosensing systems of reversibly interlocked hairs under a flow condition can be found in nature, such as those in cochlear hair cells,[41] integrin receptors of adhered cells,[42] and the endoplasmic reticulum.[43]
受这种结构启发和甲壳虫的翅膀机构，制造压力传感器
Inspired by the reversible hair-to-hair interlocking[44] and the wing-locking system of beetles, Suh and co-workers presented a flexible and highly sensitive pressure sensor using reversible, mechanically interlocked nanofiber arrays, demonstrating sensitive sensing performance in a small strain range of ≤5%.[45,46]
但是，复杂的制造过程和有限的压力感知范围也限制了进一步应用
However, the complicated device fabrication processes and the limited sensing strain range restricted the extensive application of wearable pressure sensors for ultrasensitive full-range healthcare monitoring.
最后，总结：
Therefore, the challenges of large-scale, compatible, and cost-effective assembly of wearable pressure sensors still need to be addressed for full-range healthcare monitoring
下一段：讲述本器件了
RGO-PU: 浸入到GO溶液中，然后原位还原将原位氧化的导电聚合物 聚苯胺沉积到RGO-PU上。
几个令人印象深刻的应用：
模拟静态震颤来预测早期帕金森症
压力分布感知阵列
贴合到机器人的腿上
配合无线传输器来检测人体活动
结果和讨论
先使用氧气等离子体预处理，接下来浸入到GO溶液中(Figure S2),
在水合肼溶液中原位还原GO为RGO。
由于GGO的不完全还原产生的残留的小比例含氧官能团提供锚点连接氨阳离子，PANI聚合形成层级结构
将G-RGO包覆的PU浸入到高氯酸和0.01 m苯胺单体的混合液中，其中
摩尔体积比：[aniline]/[ammonium persulfate(APS)] = 1.5:1
在不同的时间下聚合(Figure S3),
不同的聚合时间8,16,24,32h会得到不同大小的苯胺。(Figure S4)
拉曼光谱的分析： 先分别在单个材料上做拉曼分析， 之后再在复合材料上做拉曼分析，、看峰值会不会有相同的。 这是最简答的用法了吧
Figure S9： 将银胶料涂在两表面，连接到铜线上，之后铜线连接到电流仪上。？
Figure 2k中，0-10%形变下，电流的下降由于微裂缝的增加，导电电阻增大Figure 2h
Figure S11： 实时监测人体移动和对于施加压力的实时响应。
Figure S14
早期心脏疾病的检测：
the objective monitoring of static tremor signs is vitally important for early-stage disease monitoring and diagnosing and for treatments that efficiently block neurodegeneration
对静态震颤体征的客观监测对于早期疾病监测、诊断和有效阻断神经退行性变的治疗具有重要意义
Knocking on the electronic sensor with the corresponding featured frequency can potentially be employed to detect the characteristic static tremor of early-stage Parkinson’s disease
Figure 3g-i： 模拟帕金森早期的静态震颤频率，检测信号
Figure S20： A schematic of the measurement setup of pressure-sensitive sensing
performance is shown in Figure S20
