A novel flexible piezoresistive sensor using superelastic fabric coated with highly durable SEBS/TPU/CB/CNF nanocomposite for detection of human motions

Chen, Tianjiao; Wu, Guanzheng; Panahi‐Sarmad, Mahyar; Wu, Yongbo; Xu, Runxin; Cao, Shaojie; Xiao, Xueliang

doi:10.1016/j.compscitech.2022.109563

Cited by 63 publications

(25 citation statements)

References 36 publications

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“…A comparison of the sensing performances of the PAPC- x based piezoresistive sensors is shown in Table S1. Such a sensitivity variation is typical for flexible piezoresistive sensors based on porous materials. , Figure c and Table S2 compare the sensing performances of the PAPC-based flexible piezoresistive sensor with other porous-based piezoresistive sensors reported in the previous literature, demonstrating the higher sensitivity and broader sensing range for the PAPC-based sensor simultaneously. ,− …”

Section: Resultsmentioning

confidence: 68%

Porous AgNWs/Poly(vinylidene fluoride) Composite-Based Flexible Piezoresistive Sensor with High Sensitivity and Wide Pressure Ranges

Jing

Zhou

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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Flexible piezoresistive sensors are highly desirable for tactile sensing and wearable electronics. However, the reported flexible piezoresistive sensors have the inherent trade-off effect between high sensitivity and wide pressure ranges. Herein, we report a flexible piezoresistive sensor with a three-dimensional (3D) porous microstructured sensing layer composed of silver nanowires (AgNWs) and a poly(vinylidene fluoride) (PVDF) matrix, exhibiting high sensitivity and wide pressure ranges. Benefiting from the conductive networks of AgNWs and the 3D porous structure of PVDF, the porous AgNWs/PVDF composite (PAPC)-based flexible piezoresistive sensor exhibits high sensitivities of 0.014 and 0.009 kPa–1 in the wide pressure ranges of 0–30 and 30–100 kPa, respectively. In addition, the fabricated sensor also shows a fast response time of 64 ms, a low detection limit of 25 Pa, and long-term durability over 10,000 continuous cycles. The PAPC-based flexible piezoresistive sensor can accurately monitor various human physiological activities (ranging from subtle deformations to vigorous body movements) by quantitatively measuring the tactile sensation on human skin. This work indicates that the proposed sensor can be potentially applicable to mobile healthcare monitoring devices as well as next-generation wearable electronics.

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Section: Resultsmentioning

confidence: 68%

Porous AgNWs/Poly(vinylidene fluoride) Composite-Based Flexible Piezoresistive Sensor with High Sensitivity and Wide Pressure Ranges

Jing

Zhou

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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show abstract

“…Micro/nano arrays are made of twoor three-dimensional micro/nanomaterials. 210 Typical 2D micro and nano arrays are prepared by the coating method, [211][212][213] the assembly method, 214,215 the inkjet printing method, 216,217 and the directional growth method. 218 A common method for constructing 3D micro/nano arrays is epitaxial growth.…”

Section: Other Methodsmentioning

confidence: 99%

Recent progress in flexible pressure sensors based on multiple microstructures: from design to application

Zhao

Zhang

et al. 2023

Nanoscale

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“…Moreover, wearable sensory devices are an innovative technology that has shown potential application in the field of electronic skins, such as as in human health monitoring, soft robotics, and various other human–machine interfaces [ 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. These futuristic smart devices are designed to possess a high sensitivity, high flexibility, stretchability and wide detection range.…”

Section: Introductionmentioning

confidence: 99%

Wearable and Stretchable SEBS/CB Polymer Conductive Strand as a Piezoresistive Strain Sensor

et al. 2023

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A wearable and stretchable strain sensor with a gauge factor above 23 was prepared using a simple and effective technique. Conducting nanocomposite strands were prepared from styrene-b-(ethylene-co-butylene)-b-styrene triblock copolymer (SEBS) and carbon black (CB) through a solvent-processing method that uses a syringe pump. This novel nanocomposite preparation technique is a straightforward and cost-effective process and is reported in the literature for the first time. The work included two stages: the flexible nanocomposite preparation stage and the piezoresistive sensor stage. Depending on its molecular structure, the thermoelastic polymer SEBS is highly resilient to stress and strain. The main aim of this work is to fabricate a highly flexible and piezoresistive nanocomposite fibre/strand. Among the prepared composites, a composite corresponding to a composition just above the percolation threshold was selected to prepare the strain sensor, which exhibited good flexibility and conductivity and a large piezoresistive effect that was linearly dependent on the applied strain. The prepared nanocomposite sensor was stitched onto a sports T-shirt. Commercially available knee and elbow sleeves were also purchased, and the nanocomposite SEBS/CB strands were sewn separately on the two sleeves. The results showed a high sensitivity of the sensing element in the case of breathing activity (normal breathing, a 35% change, and deep breathing at 135%, respectively). In the case of knee and elbow movements, simultaneous measurements were performed and found that the sensor was able to detect movement cycles during walking.

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A novel flexible piezoresistive sensor using superelastic fabric coated with highly durable SEBS/TPU/CB/CNF nanocomposite for detection of human motions

Cited by 63 publications

References 36 publications

Porous AgNWs/Poly(vinylidene fluoride) Composite-Based Flexible Piezoresistive Sensor with High Sensitivity and Wide Pressure Ranges

Porous AgNWs/Poly(vinylidene fluoride) Composite-Based Flexible Piezoresistive Sensor with High Sensitivity and Wide Pressure Ranges

Recent progress in flexible pressure sensors based on multiple microstructures: from design to application

Wearable and Stretchable SEBS/CB Polymer Conductive Strand as a Piezoresistive Strain Sensor

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