Stretchable strain sensors play an increasingly important role in artificial intelligent devices.However,high-performanee strain sensors havebeen slowly developed owing to the harsh requirement of self-powered functio...Stretchable strain sensors play an increasingly important role in artificial intelligent devices.However,high-performanee strain sensors havebeen slowly developed owing to the harsh requirement of self-powered function,long cycle life and high resolution.Here,we report aself-powered stretchable graphene-ecoflex composite strain sensor based on photo-thermoelectric(PTE)effect induced electricity.Thedevice exhibits a high strain sensitivity of-0.056 In(nA)/%with strains ranged from 0%to 20%under 980 nm light illumination,where thestrain sensitivity can be found to in crease with in creasi ng light inte nsity.The strain sensor maintains outstanding dyn amic stability un derperiodic strains ranged from 0 to 100%in 100 cycles.The sensing resolution can be as high as 0.5%with both the response and recovery timeof less than 0.6 s.It can precisely monitor human joint motions and stretchable strains by implanting the device in pork.展开更多
基金This work was supported by the National Key R&D Program of China(No.2016YFA0202701)the National Natural Science Foundation of China(No.51472055)+4 种基金External Cooperation Program of BIC,Chinese Academy of Sciences(No.121411KYS820150028)the 2015 Annual Beijing Talents Fund(No.2015000021223ZK32)Qingdao National Laboratory for Marine Science and Technology(No.2017ASKJ01)the University of Chinese Academy of Sciences(No.Y8540XX2D2)the"thousands talents"program for the pioneer researcher and his innovation team,China.
文摘Stretchable strain sensors play an increasingly important role in artificial intelligent devices.However,high-performanee strain sensors havebeen slowly developed owing to the harsh requirement of self-powered function,long cycle life and high resolution.Here,we report aself-powered stretchable graphene-ecoflex composite strain sensor based on photo-thermoelectric(PTE)effect induced electricity.Thedevice exhibits a high strain sensitivity of-0.056 In(nA)/%with strains ranged from 0%to 20%under 980 nm light illumination,where thestrain sensitivity can be found to in crease with in creasi ng light inte nsity.The strain sensor maintains outstanding dyn amic stability un derperiodic strains ranged from 0 to 100%in 100 cycles.The sensing resolution can be as high as 0.5%with both the response and recovery timeof less than 0.6 s.It can precisely monitor human joint motions and stretchable strains by implanting the device in pork.
