Anti-freezing dual-network hydrogels with high-strength, self-adhesive and strain-sensitive for flexible sensors

Zeng, Ling-Yi; Wang, Xinchun; Yu, Wen; Chen, Hongmei; Ni, Hai‐Liang; Yu, Wenhao; Bai, Yue-Feng; Zhao, Ke‐Qing; Hu, Ping

doi:10.1016/j.carbpol.2022.120229

Cited by 61 publications

(21 citation statements)

References 56 publications

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“…To quantify and verify the adhesion of hydrogels, the lap shear experiment was conducted to obtain the bonding strength by sandwiching hydrogels between substrates (Figure 3d). 41 The adhesion curves between hydrogel and different substrates are shown in Figure 3e, where the adhesion strength is the maximum load of interface failure. As shown in Figure 3f, the adhesion strengths of the PGMS hydrogel on wood, acrylic plate, and paper are 17.1, 12.0, and 15.4 kPa, respectively.…”

Section: Mechanical Properties Of the Pgms Hydrogelmentioning

confidence: 99%

Self-Adhesive, Anti-Freezing MXene-Based Hydrogel Strain Sensor for Motion Monitoring and Handwriting Recognition with Deep Learning

Ma,

Zhang,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Flexible strain sensors based on self-adhesive, high-tensile, super-sensitive conductive hydrogels have promising application in human–computer interaction and motion monitoring. Traditional strain sensors have difficulty in balancing mechanical strength, detection function, and sensitivity, which brings challenges to their practical applications. In this work, the double network hydrogel composed of polyacrylamide (PAM) and sodium alginate (SA) was prepared, and MXene and sucrose were used as conductive materials and network reinforcing materials, respectively. Sucrose can effectively enhance the mechanical performance of the hydrogels and improve the ability to withstand harsh conditions. The hydrogel strain sensor has excellent tensile properties (strain >2500%), high sensitivity with a gauge factor of 3.76 at 1400% strain, reliable repeatability, self-adhesion, and anti-freezing ability. Highly sensitive hydrogels can be assembled into motion detection sensors that can distinguish between various strong or subtle movements of the human body, such as joint flexion and throat vibration. In addition, the sensor can be applied in handwriting recognition of English letters by using the fully convolutional network (FCN) algorithm and achieved the high accuracy of 98.1% for handwriting recognition. The as-prepared hydrogel strain sensor has broad prospect in motion detection and human–machine interaction, which provides great potential application of flexible wearable devices.

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Section: Mechanical Properties Of the Pgms Hydrogelmentioning

confidence: 99%

Self-Adhesive, Anti-Freezing MXene-Based Hydrogel Strain Sensor for Motion Monitoring and Handwriting Recognition with Deep Learning

Ma,

Zhang,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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“…The GF value of LM hydrogel-1.0 is about 3.42 in the strain range of 0–500%, and the GF value reaches 7.21 after the strain exceeds 500%, as shown in Fig. 4c, which is superior to most of reported hydrogel sensors 30,41,47–66 (Fig. 4f).…”

Section: Resultsmentioning

confidence: 79%

Self-healing liquid metal hydrogel for human–computer interaction and infrared camouflage

Jiang

et al. 2023

Mater. Horiz.

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“…The adhesion of hydrogel plays a key role in improving the accuracy of monitoring results. Zeng et al [11] fabricated a multifunctional dual-network hydrogel consisted of chitosan, polyacrylic acid (PAA), aluminum trichloride (AlCl3) and glycerol. A part of polar groups of chitosan form a large number of hydrogen bond interactions with acrylic acid (AA).…”

Section: Adhesive Hydrogel Sensormentioning

confidence: 99%

Research progress of flexible hydrogel sensor

2023

ACSS

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With the advent of the intelligent era, the development of wearable devices has gradually attracted people's attention, and the demand for flexible sensors with the advantages of lightweight and portability has also increased significantly. The flexible sensors prepared by traditional methods have some disadvantages, such as limited ductility, poor durability, insufficient biocompatibility, weak mechanical properties, and complex manufacturing process. Compared with traditional materials, hydrogels have excellent flexibility, extensibility, fracture toughness, conductivity and biocompatibility, making them an ideal choice for flexible wearable sensors. The development of flexible hydrogel sensor is reviewed in this paper.

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Anti-freezing dual-network hydrogels with high-strength, self-adhesive and strain-sensitive for flexible sensors

Cited by 61 publications

References 56 publications

Self-Adhesive, Anti-Freezing MXene-Based Hydrogel Strain Sensor for Motion Monitoring and Handwriting Recognition with Deep Learning

Self-Adhesive, Anti-Freezing MXene-Based Hydrogel Strain Sensor for Motion Monitoring and Handwriting Recognition with Deep Learning

Self-healing liquid metal hydrogel for human–computer interaction and infrared camouflage

Research progress of flexible hydrogel sensor

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