Ultra-flexible graphene/nylon/PDMS coaxial fiber-shaped multifunctional sensor
- Authors
- Puneetha, Peddathimula; Mallem, Siva Pratap Reddy; Park, Sung Cheol; Kim, Seoha; Heo, Dong Hun; Kim, Cheol Min; Shim, Jaesool; An, Sung Jin; Lee, Dong-Yeon; Park, Kwi-Il
- Issue Date
- Apr-2023
- Publisher
- TSINGHUA UNIV PRESS
- Keywords
- extremely lightweight; ultra-flexible; piezoresistive; triboelectric sensor; human-machine; whisker
- Citation
- NANO RESEARCH, v.16, no.4, pp 5541 - 5547
- Pages
- 7
- Journal Title
- NANO RESEARCH
- Volume
- 16
- Number
- 4
- Start Page
- 5541
- End Page
- 5547
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/21530
- DOI
- 10.1007/s12274-022-5235-0
- ISSN
- 1998-0124
1998-0000
- Abstract
- The development of flexible and wearable devices is mainly required for tactile sensing; as such devices can adapt to complicated nonuniform surfaces, they can be applied to the human body. Nevertheless, it remains necessary to simultaneously achieve small-scale, portable, and stable developments in such devices. Thus, this work aims at fabricating a novel, lightweight, ultra-flexible, and fiber-shaped coaxial structure with a diameter of 0.51 mm using polydimethylsiloxane/graphene/nylon material, based on piezoresistive and triboelectric principles. The piezoresistive-based robotic-hand-controlled sensor thus realized exhibits a response time of 120 ms and a fast recovery time of 55 ms. Further, the piezoresistive-based sensors effectively feature whisker/joystick-guided behaviors and also sense the human finger contact. Owing to the triboelectric-based self-powered nanogenerator behavior, the resulting sensor can convert mechanical motion into electrical energy, without adversely affecting human organs. Moreover, this triboelectric-based human finger sensor can be operated under different bending modes at specific angles. Notably, this multifunctional sensor is cost-effective and suitable for various applications, including robotic-hand-controlled operations in medical surgery, whisker/joystick motions in lightweight drone technology, and navigation with high-sensitivity components.
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