Polyaniline-coated cotton knitted fabric for body motion monitoring

Zhou, Xinru; Hu, Chengye; Xin, Lin; Han, Xiaopeng; Zhao, Xiaoman; Hong, Jing

doi:10.1016/j.sna.2021.112591

Cited by 39 publications

(22 citation statements)

References 18 publications

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“…Conductive textiles have conductive fibers or yarns that use metal [ 263 , 264 , 265 , 266 , 267 ] or carbon [ 268 , 269 , 270 ] as fiber–type materials. In addition, conductive polymers such as polyaniline can be used as wiring in textiles [ 261 , 262 , 263 , 264 , 265 , 266 , 267 , 268 , 269 , 270 , 271 , 272 , 273 , 274 ]. The above conductive materials can provide electrical conductivity [ 275 , 276 ], tensile strength [ 277 , 278 ], and mechanical and thermal stability [ 279 ] to the conductive textile.…”

Section: Structural Designs For Flexible Sensory Systemsmentioning

confidence: 99%

Flexible Sensory Systems: Structural Approaches

et al. 2022

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Biology is characterized by smooth, elastic, and nonplanar surfaces; as a consequence, soft electronics that enable interfacing with nonplanar surfaces allow applications that could not be achieved with the rigid and integrated circuits that exist today. Here, we review the latest examples of technologies and methods that can replace elasticity through a structural approach; these approaches can modify mechanical properties, thereby improving performance, while maintaining the existing material integrity. Furthermore, an overview of the recent progress in wave/wrinkle, stretchable interconnect, origami/kirigami, crack, nano/micro, and textile structures is provided. Finally, potential applications and expected developments in soft electronics are discussed.

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Section: Structural Designs For Flexible Sensory Systemsmentioning

confidence: 99%

Flexible Sensory Systems: Structural Approaches

et al. 2022

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“…Its length, cross-sectional area, and resistance are L 1 , S 1 , and R 1 after the in-plane stretching, as shown in Equation (6). Therefore, the theoretical model of the equivalent resistance ratio of the in-plane strain can be deduced from Equation (7). The calculation resistance ratio R /R is assumed to be y 1 , where the relationship between y 1 and strain ε is:…”

Section: Calculation Of the Macro-micro Equivalent Resistance Model B...mentioning

confidence: 99%

“…The application of wearable strain sensors in detecting body motion posture, exercise rehabilitation, and healthcare makes our life much convenient [ 1 , 2 , 3 , 4 ]. Knitting fabrics, due to their multifunctional characteristics in terms of elasticity, flexibility, and deformability, are suitable to be employed in wearable garments as body monitoring sensors for movement [ 5 , 6 , 7 ]. Compared to woven and non-woven fabrics, knitting fabrics have unique properties [ 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Equivalent Resistance Model of Knitted Strain Sensor under In-Plane and Three-Dimensional Surfaces Elongation

Tian

et al. 2022

Polymers

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The dynamic equivalent resistance is a major index that determines the sensing performance of knitted strain sensors, and has the characteristics of in-plane and three-dimensional curved strain sensing. Therefore, in addition to establishing the in-plane equivalent resistance, it is necessary to establish a three-dimensional equivalent resistance model to fully explain the surface sensing performance. This project establishes two equivalent resistance models of knitted strain sensors under in-plane deformation and one equivalent resistance model of three-dimensional curved surface strain. Based on the length of resistance and the geometric topological structure, an in-plane strain macro–micro equivalent resistance model and a topological equivalent resistance model are established, respectively. In addition, a three-dimensional curved surface equivalent resistance model is created based on the volume resistance. By comparing the theoretical model with the experimental data, the results prove that the proposed in-plane and three-dimensional models can be utilized to calculate the resistance change of knitted strain sensors. Length resistance, coil transfer, and curved surface deformation depth are the main factors that affect the equivalent resistance of knitted strain sensors.

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“…Similarly, PANI/cotton conductive knitted fabric fabricated via in situ polymerization of aniline was excellent in terms of higher linearity, and provided a maximum sensitivity of 30. Still, the cyclic sensing range for cotton-knitted fabrics is less than 10%; i.e., on exceeding the 10% strain range, the structural relaxation and PANI conductive layer disruptions severely harmed the sensing repeatable characters [232]. Following this, pristine PANI and PANI/TiO 2 hybrids formed on the polyester knitted fabrics.…”

Section: Nanofiber Sensorsmentioning

confidence: 99%

Recent Progress in Conducting Polymer Composite/Nanofiber-Based Strain and Pressure Sensors

et al. 2021

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The Conducting of polymers belongs to the class of polymers exhibiting excellence in electrical performances because of their intrinsic delocalized π- electrons and their tunability ranges from semi-conductive to metallic conductive regime. Conducting polymers and their composites serve greater functionality in the application of strain and pressure sensors, especially in yielding a better figure of merits, such as improved sensitivity, sensing range, durability, and mechanical robustness. The electrospinning process allows the formation of micro to nano-dimensional fibers with solution-processing attributes and offers an exciting aspect ratio by forming ultra-long fibrous structures. This review comprehensively covers the fundamentals of conducting polymers, sensor fabrication, working modes, and recent trends in achieving the sensitivity, wide-sensing range, reduced hysteresis, and durability of thin film, porous, and nanofibrous sensors. Furthermore, nanofiber and textile-based sensory device importance and its growth towards futuristic wearable electronics in a technological era was systematically reviewed to overcome the existing challenges.

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Polyaniline-coated cotton knitted fabric for body motion monitoring

Cited by 39 publications

References 18 publications

Flexible Sensory Systems: Structural Approaches

Flexible Sensory Systems: Structural Approaches

Dynamic Equivalent Resistance Model of Knitted Strain Sensor under In-Plane and Three-Dimensional Surfaces Elongation

Recent Progress in Conducting Polymer Composite/Nanofiber-Based Strain and Pressure Sensors

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