Stretchable and Sensitive Strain Sensors Based on CB/MWCNTs–TPU for Human Motion Capture and Health Monitoring

Xia, Jin-lan; He, Lili; Lu, Zhilai; Liu, Linpeng; Song, Jingming; Chen, Siyu; Wang, Qingshan; Hammad, Farid A.; Tian, Yanling

doi:10.1021/acsanm.3c01447

Cited by 6 publications

(1 citation statement)

References 44 publications

(57 reference statements)

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“…Therefore, it is still a big challenge to obtain a strain sensor that is simple to prepare, low cost, high sensitivity, and high stability. At the same time, human skin is the largest perception network on the human body [9], and traditional human-machine interaction devices often only focus on its interaction effect, while ignoring the comfort and realism of human experience [10][11][12][13][14][15]. With the development of flexible electronic technology, the preparation of sensitive units of sensors has gradually become refined and patterned, which has opened a new journey to explore high-performance flexible strain sensors for humanmachine interaction [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive strain sensors based on dispensing technology for human–machine interaction

Chen,

Huang,

Zhang

et al. 2023

Flex. Print. Electron.

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Flexible strain sensors have stable and sensitive sensing performance under deformation conditions such as pressing, bending, and stretching. However, the preparation process of high-performance strain sensors is still very complex, which also limits the application and production of sensors. At the same time, most sensors are unstable and inefficient, so they cannot meet people’s expectations for high sensitivity and stability. In order to solve the above problems, this paper proposes a resistive strain sensor based on dispensing technology, with carbon black and polyurethane mixture as printing ink. Then, a sensor-sensitive layer with a right-angle serpentine structure is printed directly by air pressure extrusion. The sensor can detect changes at 0.1% strain and withstand 2400 tensile cycles while maintaining a sensitivity of 28.07 in the range of 0%–40%. In addition, the sensor can accurately and stably reflect the changes in different joints of the human body. At the same time, the data glove based on the strain sensor shows great application potential in the fields of gesture recognition and human–machine interaction.

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Section: Introductionmentioning

confidence: 99%

Highly sensitive strain sensors based on dispensing technology for human–machine interaction

Chen,

Huang,

Zhang

et al. 2023

Flex. Print. Electron.

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Strain sensor based on polyurethane/carbon nanotube elastic conductive spiral yarn with high strain range and sensitivity

Nie,

Chen,

Tang

et al. 2024

Polymer Composites

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Wearable flexible electronic strain sensor devices have gained significant attention in recent years due to their potential for detecting human motion in various scenarios. However, the development of strain sensors with high sensitivity across a wide range of strains remains a major challenge. We present herein a novel strain sensor based on a graded structure thermoplastic polyurethane (TPU)/carbon nanotube (CNT) composite yarn with significantly enhanced mechanical performance imparted by the designed structure. The twisted CNTs/TPU spiral yarn demonstrated a fracture elongation of up to 1066% while maintaining charge conductivity under high‐strain conditions. Moreover, it exhibited sensitive changes in resistance versus tensile strain, excellent repeatability, and stability. As a strain sensor, it achieved a gauge factor (GF) of 67.2 within a strain range below 50%, reaching 51.7 in a strain range exceeding 150%. With a fast response time of 0.12 s, it enabled accurate identification of movements in different body parts. These findings highlight the broad application potential of the designed spiral yarn strain sensor in areas such as human motion monitoring and human–computer interaction.Highlights Prepares a flexible strain sensor with graded‐structure (CNT‐fiber‐yarn). Shows high sensitivity and a wide strain response range Reveals the conductive model of strain sensor.

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Versatile ionogels with tailoring performance for strain sensors, temperature alarm and self-powered wearable devices

Zhou,

Bai,

Niu

et al. 2024

Chemical Engineering Journal

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Stretchable and Sensitive Strain Sensors Based on CB/MWCNTs–TPU for Human Motion Capture and Health Monitoring

Cited by 6 publications

References 44 publications

Highly sensitive strain sensors based on dispensing technology for human–machine interaction

Highly sensitive strain sensors based on dispensing technology for human–machine interaction

Strain sensor based on polyurethane/carbon nanotube elastic conductive spiral yarn with high strain range and sensitivity

Versatile ionogels with tailoring performance for strain sensors, temperature alarm and self-powered wearable devices

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