Wearable electronic devices have received increasing interests because of their excellent flexibility,stretchability,and human friendliness.As the core components,flexible strain sensors integrated with wide working range,high sensitivity,and environment stability,especially in moisture or corrosive envi-ronments,remain a huge challenge.Herein,synergistic carbon nanotubes(CNTs)/reduced graphene oxide(rGO)dual conductive layer decorated elastic rubber band(RB)was successfully developed and treated with hydrophobic fumed silica(Hf-Si02)for preparing superhydrophobic strain sensor.As expected,stable entangled CNTs layer and ultrasensitive microcracked rGO layer endow the sensor with extremely low detection limit(0.1％),high sensitivity(gauge factor is 685.3 at 482％strain),wide workable strain range(0-482％),fast response/recovery(200 ms/200 ms)and favorable reliability and reproducibility over 1000 cycles.Besides,the constructed Hf-SiO2 coating also makes the sensor exhibit excellent super-hydrophobicity,self-cleaning property,and corrosion-resistance.As a proof of concept,our prepared high-performance strain sensor can realize the full-range monitoring of human motions and physiolog-ical signals even in the water environment,including pulse,vocalization,joint bending,running,and ges-ture recognition.Interestingly,it can also be knitted into a tactile electronic textile for spatial pressure distribution measurement.Thus,this study provides a universal technique for the preparation of high-performance strain sensors with great potential applications in the field of next-generation intelligent wearable electronics.

Hongling Sun;Yibing Bu;Hu Liu;Jingwen Wang;Wenke Yang;Qianming Li;Zhanhu Guo;Chuntai Liu;Changyu Shen

Key Laboratory of Materials Processing and Mold(Zhengzhou University),Ministry of Education,National Engineering Research Center for Advanced Polymer Processing Technology,Zhengzhou University,Zhengzhou 450002,China;National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210023,China;Integrated Composites Laboratory(ICL),Department of Chemical&Biomolecular Engineering,University of Tennessee,Knoxville TN 37996,USA

科学通报（英文版）

[1]Hongling Sun;Yibing Bu;Hu Liu;Jingwen Wang;Wenke Yang;Qianming Li;Zhanhu Guo;Chuntai Liu;Changyu Shen-.Superhydrophobic conductive rubber band with synergistic dual conductive layer for wide-range sensitive strain sensor)[J].科学通报（英文版）,2022(16):1669-1678

fumed,microcracked

Superhydrophobic,conductive,rubber,band,synergistic,dual,layer,wide,range,strain,Wearable,devices,have,received,increasing,interests,because,their,excellent,flexibility,stretchability,human,friendliness,core,components,flexible,sensors,integrated,working,high,sensitivity,environment,stability,especially,moisture,corrosive,ronments,remain,huge,challenge,Herein,carbon,nanotubes,CNTs,reduced,graphene,oxide,rGO,decorated,elastic,RB,was,successfully,developed,treated,silica,Hf,Si02,preparing,superhydrophobic,expected,stable,entangled,ultrasensitive,endow,extremely,low,detection,limit,gauge,workable,fast,response,recovery,ms,favorable,reliability,reproducibility,cycles,Besides,constructed,SiO2,coating,also,makes,exhibit,hydrophobicity,self,cleaning,property,corrosion,resistance,proof,concept,our,prepared,performance,can,realize,monitoring,motions,physiolog,ical,signals,even,water,including,pulse,vocalization,joint,bending,running,ges,recognition,Interestingly,knitted,into,tactile,textile,spatial,pressure,distribution,measurement,Thus,this,study,provides,universal,technique,preparation,great,potential,applications,field,next,generation,intelligent,wearable,electronics

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