A Flexible Strain Sensor Based on the Porous Structure of a Carbon Black/Carbon Nanotube Conducting Network for Human Motion Detection

Zhang, Peng; Chen, Yu‐Cheng; Li, Yuxia; Zhang, Yao; Zhang, Jian; Huang, Liangsong

doi:10.3390/s20041154

Cited by 64 publications

(33 citation statements)

References 38 publications

(43 reference statements)

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“…Different GF values reflect the different sensitivity of the sensors under applied strains. Among the reported works, both two or more GF values exist in one sensor within the limited strains, [ 65 , 66 , 67 ] but also one GF value with the increased strain in a sensor [ 68 , 69 ]. And these are tightly associated with the materials and mechanisms of the sensors system.…”

Section: Critical Parameters Of Strain Sensorsmentioning

confidence: 99%

Materials, Electrical Performance, Mechanisms, Applications, and Manufacturing Approaches for Flexible Strain Sensors

Han

Chen

et al. 2021

Nanomaterials

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With the recent great progress made in flexible and wearable electronic materials, the upcoming next generation of skin-mountable and implantable smart devices holds extensive potential applications for the lifestyle modifying, including personalized health monitoring, human-machine interfaces, soft robots, and implantable biomedical devices. As a core member within the wearable electronics family, flexible strain sensors play an essential role in the structure design and functional optimization. To further enhance the stretchability, flexibility, sensitivity, and electricity performances of the flexible strain sensors, enormous efforts have been done covering the materials design, manufacturing approaches and various applications. Thus, this review summarizes the latest advances in flexible strain sensors over recent years from the material, application, and manufacturing strategies. Firstly, the critical parameters measuring the performances of flexible strain sensors and materials development contains different flexible substrates, new nano- and hybrid- materials are introduced. Then, the developed working mechanisms, theoretical analysis, and computational simulation are presented. Next, based on different material design, diverse applications including human motion detection and health monitoring, soft robotics and human-machine interface, implantable devices, and biomedical applications are highlighted. Finally, synthesis consideration of the massive production industry of flexible strain sensors in the future; different fabrication approaches that are fully expected are classified and discussed.

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Section: Critical Parameters Of Strain Sensorsmentioning

confidence: 99%

Materials, Electrical Performance, Mechanisms, Applications, and Manufacturing Approaches for Flexible Strain Sensors

Han

Chen

et al. 2021

Nanomaterials

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“…Graphite is often used to form pencil—paper electrode, drawing patterns on the substrate by pencil painting [ 103 ]. CNT is a carbon material with extraordinary conductivity and mechanical strength [ 104 , 105 ]. Although a single CNT has a high sensitivity to strain, it is constructed and used on a larger scale.…”

Section: Materials and Fabrication Strategiesmentioning

confidence: 99%

Recent Progress in Wearable Biosensors: From Healthcare Monitoring to Sports Analytics

Feng

Huang

et al. 2020

Biosensors

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Recent advances in lab-on-a-chip technology establish solid foundations for wearable biosensors. These newly emerging wearable biosensors are capable of non-invasive, continuous monitoring by miniaturization of electronics and integration with microfluidics. The advent of flexible electronics, biochemical sensors, soft microfluidics, and pain-free microneedles have created new generations of wearable biosensors that explore brand-new avenues to interface with the human epidermis for monitoring physiological status. However, these devices are relatively underexplored for sports monitoring and analytics, which may be largely facilitated by the recent emergence of wearable biosensors characterized by real-time, non-invasive, and non-irritating sensing capacities. Here, we present a systematic review of wearable biosensing technologies with a focus on materials and fabrication strategies, sampling modalities, sensing modalities, as well as key analytes and wearable biosensing platforms for healthcare and sports monitoring with an emphasis on sweat and interstitial fluid biosensing. This review concludes with a summary of unresolved challenges and opportunities for future researchers interested in these technologies. With an in-depth understanding of the state-of-the-art wearable biosensing technologies, wearable biosensors for sports analytics would have a significant impact on the rapidly growing field—microfluidics for biosensing.

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“…The manufacturing processes of some studies are complex [26,28,31], and they are not easily translated to mass-production or industrial applications. In an overview comparison, our sensors (with GF = 71.5) have higher sensitivity than other studies [3,17,[23][24][25][26][27][28][29][30][31][32] at 20% of the tension. As shown in Figure 8, the GFs of reference researches are lowest at 0.46 [17] and highest at 60.3 [26], respectively.…”

Section: Shape Of the Sensorsmentioning

confidence: 69%

Highly Sensitive E-Textile Strain Sensors Enhanced by Geometrical Treatment for Human Monitoring

Vu¹,

Kim²

2020

Sensors

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Electronic textiles, also known as smart textiles or smart fabrics, are one of the best form factors that enable electronics to be embedded in them, presenting physical flexibility and sizes that cannot be achieved with other existing electronic manufacturing techniques. As part of smart textiles, e-sensors for human movement monitoring have attracted tremendous interest from researchers in recent years. Although there have been outstanding developments, smart e-textile sensors still present significant challenges in sensitivity, accuracy, durability, and manufacturing efficiency. This study proposes a two-step approach (from structure layers and shape) to actively enhance the performance of e-textile strain sensors and improve manufacturing ability for the industry. Indeed, the fabricated strain sensors based on the silver paste/single-walled carbon nanotube (SWCNT) layers and buffer cutting lines have fast response time, low hysteresis, and are six times more sensitive than SWCNT sensors alone. The e-textile sensors are integrated on a glove for monitoring the angle of finger motions. Interestingly, by attaching the sensor to the skin of the neck, the pharynx motions when speaking, coughing, and swallowing exhibited obvious and consistent signals. This research highlights the effect of the shapes and structures of e-textile strain sensors in the operation of a wearable e-textile system. This work also is intended as a starting point that will shape the standardization of strain fabric sensors in different applications.

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A Flexible Strain Sensor Based on the Porous Structure of a Carbon Black/Carbon Nanotube Conducting Network for Human Motion Detection

Cited by 64 publications

References 38 publications

Materials, Electrical Performance, Mechanisms, Applications, and Manufacturing Approaches for Flexible Strain Sensors

Materials, Electrical Performance, Mechanisms, Applications, and Manufacturing Approaches for Flexible Strain Sensors

Recent Progress in Wearable Biosensors: From Healthcare Monitoring to Sports Analytics

Highly Sensitive E-Textile Strain Sensors Enhanced by Geometrical Treatment for Human Monitoring

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