High Sensitivity, Wide Range Pressure Sensor Based on Layer-by-Layer Self-Assembled MXene/Carbon Black@Polyurethane Sponge for Human Motion Monitoring and Intelligent Vehicle Control

Xia, Hui; Zhang, Dongzhi; Wang, Dongyue; Tang, Mingcong; Zhang, Hao; Chen, Xiaoya; Mao, Ruiyuan; Ma, Yanhua; Cai, Haolin

doi:10.1109/jsen.2022.3211646

Cited by 12 publications

(4 citation statements)

References 53 publications

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“…The first stage is the preparation of the MXene nanosheet solution. The preparation approach is based on the etching method we employed before 40 . The specific procedure is as follows.…”

Section: Methodsmentioning

confidence: 99%

MXene/PPy@PDMS sponge-based flexible pressure sensor for human posture recognition with the assistance of a convolutional neural network in deep learning

Xia,

Wang,

Zhang

et al. 2023

Microsyst Nanoeng

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The combination of flexible sensors and deep learning has attracted much attention as an efficient method for the recognition of human postures. In this paper, an in situ polymerized MXene/polypyrrole (PPy) composite is dip-coated on a polydimethylsiloxane (PDMS) sponge to fabricate an MXene/PPy@PDMS (MPP) piezoresistive sensor. The sponge sensor achieves ultrahigh sensitivity (6.8925 kPa−1) at 0–15 kPa, a short response/recovery time (100/110 ms), excellent stability (5000 cycles) and wash resistance. The synergistic effect of PPy and MXene improves the performance of the composite materials and facilitates the transfer of electrons, making the MPP sponge at least five times more sensitive than sponges based on each of the individual single materials. The large-area conductive network allows the MPP sensor to maintain excellent electrical performance over a large-scale pressure range. The MPP sensor can detect a variety of human body activity signals, such as radial artery pulse and different joint movements. The detection and analysis of human motion data, which is assisted by convolutional neural network (CNN) deep learning algorithms, enable the recognition and judgment of 16 types of human postures. The MXene/PPy flexible pressure sensor based on a PDMS sponge has broad application prospects in human motion detection, intelligent sensing and wearable devices.

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“…The first stage is the preparation of the MXene nanosheet solution. The preparation approach is based on the etching method we employed before 40 . The specific procedure is as follows.…”

Section: Methodsmentioning

confidence: 99%

MXene/PPy@PDMS sponge-based flexible pressure sensor for human posture recognition with the assistance of a convolutional neural network in deep learning

Xia,

Wang,

Zhang

et al. 2023

Microsyst Nanoeng

Self Cite

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“…The data analysis enables airbag deployment adjustments and optimal seating positions. Pressure sensors also monitor tire pressure, improving vehicle control for safety and fuel efficiency [ 122 ]. In industrial settings, flexible and stretchable pressure sensors enable the real-time monitoring of machinery, equipment, and manufacturing processes.…”

Section: State-of-the-art Applications Of Flexible and Stretchable Pr...mentioning

confidence: 99%

Flexible and Stretchable Pressure Sensors: From Basic Principles to State-of-the-Art Applications

Seesaard,

Wongchoosuk

2023

Micromachines

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Flexible and stretchable electronics have emerged as highly promising technologies for the next generation of electronic devices. These advancements offer numerous advantages, such as flexibility, biocompatibility, bio-integrated circuits, and light weight, enabling new possibilities in diverse applications, including e-textiles, smart lenses, healthcare technologies, smart manufacturing, consumer electronics, and smart wearable devices. In recent years, significant attention has been devoted to flexible and stretchable pressure sensors due to their potential integration with medical and healthcare devices for monitoring human activity and biological signals, such as heartbeat, respiratory rate, blood pressure, blood oxygen saturation, and muscle activity. This review comprehensively covers all aspects of recent developments in flexible and stretchable pressure sensors. It encompasses fundamental principles, force/pressure-sensitive materials, fabrication techniques for low-cost and high-performance pressure sensors, investigations of sensing mechanisms (piezoresistivity, capacitance, piezoelectricity), and state-of-the-art applications.

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“…[21,22] The flexible matrix and the conductive material are usually the most fundamental components of flexible piezoresistive pressure sensors, and the former performs a critical function in improving the sensitivity, ductility, and repeatability performance of the sensors. Researchers typically adopted polymeric materials such as polyimide (PI), [23] polydimethylsiloxane (PDMS), [24,25] and polyurethane (PU) [26] as flexible matrix for flexible pressure sensors, and the conductive materials combined with them to form the sensitive layer with force-sensitive functions are generally poly (3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS), [27,22] carbon nanotubes (CNTs), [28] reduced graphene oxide (rGO), [29] and 2D transition metal-carbon nitride (MXene), [30,31] etc. When an external pressure is applied, the conductive materials in the sensitive layer are brought closer together and come into contact, leading to a drastic change in the resistivity of the sensitive layer.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive and Breathability Flexible Piezoresistive Pressure Sensor Based on Xylon

Qin,

Gao,

Zhou

2024

Adv Materials Technologies

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In recent years, the prevalence of cervical spondylosis has been increasing, which is associated with unhealthy posture in daily life, flexible pressure sensors are beneficial in preventing cervical spine disorders. This work is dedicated to developing a flexible, high‐performance, and breathable device to monitor the health of the neck. Here, a flexible pressure sensor with a “sandwich” structure is presented, which incorporates patterned xylon fabric as the substrate and MXene as the sensitive layer. Furthermore, the application of silver nanowires (AgNWs) as the electrode material improves the piezoresistive performance. Combined with an internal elastic encapsulation method (IEEM), the sensor exhibits high sensitivity (1417.9 kPa−1 under pressure below 100 kPa) and a fast response time (30.77 ms). Compared with traditional flexible pressure sensors, the breathability of devices with an all‐fiber structure is nearly seven times higher, which better satisfies the monitoring requirements of long‐term wear. Finally, a wireless system is established by integrating a Bluetooth module and a terminal app. It enables monitoring and sensing of various physiological signals of the neck, as well as identification and alerting of long‐term poor posture such as prolonged neck flexion, showing a potential candidate for the applications of the next‐generation wearable device.

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High Sensitivity, Wide Range Pressure Sensor Based on Layer-by-Layer Self-Assembled MXene/Carbon Black@Polyurethane Sponge for Human Motion Monitoring and Intelligent Vehicle Control

Cited by 12 publications

References 53 publications

MXene/PPy@PDMS sponge-based flexible pressure sensor for human posture recognition with the assistance of a convolutional neural network in deep learning

MXene/PPy@PDMS sponge-based flexible pressure sensor for human posture recognition with the assistance of a convolutional neural network in deep learning

Flexible and Stretchable Pressure Sensors: From Basic Principles to State-of-the-Art Applications

Highly Sensitive and Breathability Flexible Piezoresistive Pressure Sensor Based on Xylon

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