A compliant electrode developed by plasticized polyvinyl chloride filled with multi-walled carbon nanotubes for sensing and actuating

Dong, Tianyun; Liu, Tao; Pecht, Michael

doi:10.1016/j.sna.2019.07.042

Cited by 11 publications

(6 citation statements)

References 42 publications

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“…To prepare a soft sensor, we used a custom compliant electrode based on our previous work [30]. The electrode used for this paper had a plasticizer:PVC ratio of 3:1 and a conductive carbon nanotube content of 5%.…”

Section: Fabrication Of the Sensormentioning

confidence: 99%

Design of a wireless and fully flexible insole using a highly sensitive pressure sensor for gait event detection

Dong

Guo

et al. 2021

Meas. Sci. Technol.

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Gait event detection is a requirement for clinical diagnosis and control strategies for power exoskeletons and rehabilitation robots. Smart insoles are widely used in gait research as they are easy to wear. However, current sensor insoles still have some problems, such as being easily affected by temperature, low sensor sensitivity and discomfort while wearing. To solve these problems, in this work we developed a fully flexible insole based on a high-sensitivity capacitive sensor. High sensitivity was achieved by preparing the dielectric material with a porous structure and full flexibility was obtained by using customized compliant electrodes. The porous structure was produced by mixing xylitol with silicone rubber and the compliant electrode was manufactured by mixing conductive carbon nanotubes into plasticized polyvinyl chloride. The mechanical and sensing properties of the sensor were studied. The results show that our sensor has high sensitivity, a good dynamic response, a fast response time (about 80 ms), a large pressure detection range (0–500 kPa), good durability (>1000 cycles) and is little influenced by temperature. We integrated the sensors into the self-made flexible silicone insole. A wireless data transmission measurement module was developed for ease of use. Finally, we found that the prepared sensor insole is able to detect gait events.

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Section: Fabrication Of the Sensormentioning

confidence: 99%

Design of a wireless and fully flexible insole using a highly sensitive pressure sensor for gait event detection

Dong

Guo

et al. 2021

Meas. Sci. Technol.

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“…[86] Most of the literature reported on the application of NR in the fabrication of compliant electrodes. [87][88][89] Compliant electrodes are based on two-phase composites which contain conductive materials and the polymer matrix. They have excellent conductivity when stretched, which is mostly used in deformable supercapacitors and flexible batteries.…”

Section: Electrical Properties Of Nr Electrodesmentioning

confidence: 99%

“…They have excellent conductivity when stretched, which is mostly used in deformable supercapacitors and flexible batteries. [87,88] Metal powders have high electrical conductivity, which theoretically could provide better conductivity for the NR-based electrodes. However, metal powders tend to aggregate, hence, poor compatibility with the polymer matrix.…”

Section: Electrical Properties Of Nr Electrodesmentioning

confidence: 99%

Exploring the Potential of Natural Rubber as Electrolytes and Electrodes for Advanced Energy Storage Applications

Kamarulazam,

Manogran,

Goh

et al. 2023

Energy Tech

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Amid the search for alternatives to petrochemical‐based polymers and growing concern for environmental sustainability, natural polymers have gained significant attention. These polymers have potential applications in household appliances to advanced energy systems and offer a way to address the depletion and sustainability challenges associated with synthetic polymers. One such natural source of polymer is natural rubber (NR), which has been developed as a highly performing material in electrodes and electrolytes. Nowadays, researchers are more interested in NR due to its sustainability, affordability, elastomeric properties, and low glass transition temperature. This article presents a comprehensive exploration of NR characteristics, delving into its elasticity, glass transition temperature, and an extensive evaluation of its potential as a hydrogel electrolyte. Furthermore, this investigation showcases NR's capability to mitigate potential long‐term consequences of synthetic materials. Given NR's inherent insulating nature, a meticulous analysis of the interplay between NR composites and their electrical properties within electrodes is prompted. This article provides a review of past research, growth and development, and prospects of NR and its derivatives as in applications including electrochemical energy storage, energy harvesting, wastewater treatment, and slow‐release fertilizers. Moreover, the study briefly underscores the importance of NR while acknowledging its limitations.

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“…Compared to flexible sensors for capturing motion signals, the same functionality is achieved by the sensor with a stable and accurate knit construction in this paper. In most studies, the analysis of sensor electrical signal curve is single [34,35]. In the multi-motion mode, the data will be more confusion and increase the recognition difficulty.…”

Section: Identification Of Knee Joint During Running and Walkingmentioning

confidence: 99%

Flexible knitted sensing device for identifying knee joint motion patterns

Miao

Raji

2019

Smart Mater. Struct.

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A knitted fabric strain sensor made from silver-plated conductive yarn and nylon spandex covered yarn is presented. Ten sensing zones are embedded into the fabricated running tights throughweft knitting technology. Physical activity tests are conducted to establish the linear relationship between the angle of the knee joint and the change in resistance of the sensing zones. A corresponding change in resistance relative knee joint movement is applied to identify three kinds of knee joint dynamics, namely, walking, sitting, and squatting, as well as four kinds of movement modes under the walking state of knee joint, including running, walking, climbing, and descending steps. The middle sensor region of the knee joint also has an obvious influence on the sensing performance of knee joint movement. Four modes of motion are extracted. Maximum resistance, average resistance, variance resistance, and median resistance are the main resistance characteristic values. Two kinds of motion cycles, namely, stand phase and swing phase, are the main time characteristic values. This thesis cites the decision tree algorithm and describes the method of realizing gait recognition.

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A compliant electrode developed by plasticized polyvinyl chloride filled with multi-walled carbon nanotubes for sensing and actuating

Cited by 11 publications

References 42 publications

Design of a wireless and fully flexible insole using a highly sensitive pressure sensor for gait event detection

Design of a wireless and fully flexible insole using a highly sensitive pressure sensor for gait event detection

Exploring the Potential of Natural Rubber as Electrolytes and Electrodes for Advanced Energy Storage Applications

Flexible knitted sensing device for identifying knee joint motion patterns

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