Ultralow-Cost, Highly Sensitive, and Flexible Pressure Sensors Based on Carbon Black and Airlaid Paper for Wearable Electronics

Han, Zhiyuan; Li, Hangfei; Xiao, Jianliang; Song, Honglie; Li, Bo; Cai, Shisheng; Chen, Ying; Ma, Yinji; Feng, Xue

doi:10.1021/acsami.9b12929

Cited by 134 publications

(88 citation statements)

References 68 publications

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“…Cellulose paper can be compressed on a small scale owing to its fibrous structure. Different types of papers can be used to improve compressibility [20]. In this study, the presence of PVA in the electrode material promotes compressibility significantly via its stretchable nature.…”

Section: Tactile Sensormentioning

confidence: 96%

“…CB has found a place in various applications of consumer products, such as pigments, plastics, sensors [16], and supercapacitors [18]. CB was used for flexible and wearable electronics due to its electrical and mechanical properties, as well as cost-effectiveness [16,[19][20][21][22][23]. Graphene also is used for strain and electrochemical sensing.…”

Section: Introductionmentioning

confidence: 99%

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A Flexible and Low-Cost Tactile Sensor Produced by Screen Printing of Carbon Black/PVA Composite on Cellulose Paper

Sekertekin

Bozyel

Gökcen

2020

Sensors

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This study presents the design and fabrication of a flexible tactile sensor printed on a cellulose paper substrate using a carbon black (CB) – filled polyvinyl alcohol (PVA) polymer matrix as ink material. In the design, electrodes are obtained by screen printing of CB/PVA composite on dielectric cellulose paper. The screen-printing method is preferred for fabrication because of its simplicity and low manufacturing cost. The tactile sensor is formed by overlapping two ink-printed sheets. Electrical properties are investigated under compressive and tensile strains. The results indicate that the tactile sensor configuration and materials can be used for piezoresistive, capacitive, and also impedance sensors. The same tactile sensor structure is also examined using a commercial carbon-based ink for performance comparison. The comparative study indicates that CB/PVA ink screen-printed on paper demonstrates superior sensitivity for capacitive sensing with low hysteresis, as well as low response and recovery times. The piezoresistive-sensing properties of CB/PVA on cellulose paper show a gauge factor (GF) of 10.68, which is also very promising when conventional metal strain gauges are considered. CB/PVA screen-printed on cellulose paper features impedance-sensing properties and is also sensitive to the measurement frequency. Therefore, the response type of the sensor can be altered with the frequency.

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Section: Tactile Sensormentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

A Flexible and Low-Cost Tactile Sensor Produced by Screen Printing of Carbon Black/PVA Composite on Cellulose Paper

Sekertekin

Bozyel

Gökcen

2020

Sensors

View full text Add to dashboard Cite

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“…Recently, Han et al reported an ultralow-cost flexible pressure sensor based on carbon black (CB) and airlaid paper (AP). 170 Compared with well-studied sensing materials, such as graphene, rGO (reduced graphene oxide), and Au/Ag nanowires, conductive CB and AP are ultra-cheap raw materials. The sensing materials are just prepared through drop casting CB solutions onto APs (Fig.…”

Section: Strain and Pressurementioning

confidence: 99%

Flexible inorganic bioelectronics

Chen¹,

et al. 2020

Self Cite

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Flexible inorganic bioelectronics represent a newly emerging and rapid developing research area. With its great power in enhancing the acquisition, management and utilization of health information, it is expected that these flexible and stretchable devices could underlie the new solutions to human health problems. Recent advances in this area including materials, devices, integrated systems and their biomedical applications indicate that through conformal and seamless contact with human body, the measurement becomes continuous and convenient with yields of higher quality data. This review covers recent progresses in flexible inorganic bio-electronics for human physiological parameters' monitoring in a wearable and continuous way. Strategies including materials, structures and device design are introduced with highlights toward the ability to solve remaining challenges in the measurement process. Advances in measuring bioelectrical signals, i.e., the electrophysiological signals (including EEG, ECoG, ECG, and EMG), biophysical signals (including body temperature, strain, pressure, and acoustic signals) and biochemical signals (including sweat, glucose, and interstitial fluid) have been summarized. In the end, given the application property of this topic, the future research directions are outlooked.

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“…Tactile sensation is one of the most significant functions of electronic skin, which mainly relies on pressure sensor to realize. [ 11–15 ] Among the different kinds of pressure sensors, piezoresistive pressure sensor demonstrates great application potential because of its fast response speed, simple structure, economical fabrication process and great stability. [ 16–20 ] Improvement of sensitivity of pressure sensors is critical for the high precision and ultrasensitive pressure detection, [ 21–25 ] which is however a challenging task because the key effect of device configuration on the sensitivity is always neglected.…”

Section: Figurementioning

confidence: 99%

Synergistic Resistance Modulation toward Ultrahighly Sensitive Piezoresistive Pressure Sensors

Yuan

Wang

et al. 2020

Adv Materials Technologies

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In recent years, with the rapid development of prosthesis, [1,2] health monitoring, [3][4][5][6][7] and robot, [8][9][10] electronic skin has drawn huge research enthusiasm. Tactile sensation is one of the most significant functions of electronic skin, which mainly relies on pressure sensor to realize. [11][12][13][14][15] Among the different kinds of pressure sensors, piezoresistive pressure sensor demonstrates great application potential because of its fast response speed, simple structure, economical fabrication process and great stability. [16][17][18][19][20] Improvement of sensitivity of pressure sensors is critical for the high precision and ultrasensitive pressure detection, [21][22][23][24][25] which is however a challenging task because the key effect of device configuration on the sensitivity is always neglected.Until now, the commonly used strategy to improve sensitivity focuses on the development of different kinds of microstructure of active materials, but this strategy is still not effective enough to achieve ultrahigh sensitivity. [26][27][28] For example, Fang et al. replicated the lotus leaf surface onto the polydimethylsiloxane (PDMS) substrate to produce a structured layer and then sprayed graphene films as active electrodes, [29] which yields a sensitivity of 1.2 kPa −1 . Jong-jin Park et al. reported a sensor with sensitivity of 10.32 kPa −1 by introducing a pyramidical electrode consisting of a conductive polymer (PEDOT:PSS) and an aqueous polyurethane dispersion (PUD) elastomer blend. [30] Bao et al. prepared a new piezoresistive sensor with sensitivity up to 41.9 kPa −1 by preparing interconnected polypyrrole (PPY) hollow sphere structure through a multiphase synthesis technique. [31] These researches have significantly advanced the development of piezoresistive sensors, but still could not achieve ultrahigh sensitivity to meet the requirement of high precision and ultrasensitive detection. This is because the surface microstructure of active materials is not the only key factor for the improvement of sensitivity.To overcome the current obstacle and get ultrathigh sensitivity, it would be necessary to understand the basic working principle of piezoresistive pressure sensor, and further get the feasible solution. The basic electrical characteristics of piezoresistive sensor is similar, and the total resistance (R total ) of the device consists of two parts: the body resistance (R b ) Improvement of sensitivity of electrical piezoresistive sensors is critical for high-precision and ultrasensitive detection, which mainly depends on the modulation ability of total resistance of sensor under applied pressure. However, in most of the reported sensor devices, the contact resistance and body resistance (the key parts of total resistance of sensor) generally cannot be modulated simultaneously, which results in the limited sensitivity. In this work, an ultrahighly sensitive piezoresistive pressure sensor with an exquisitely designed structure is demonstrated, providing an uncomparable advantage of ...

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Ultralow-Cost, Highly Sensitive, and Flexible Pressure Sensors Based on Carbon Black and Airlaid Paper for Wearable Electronics

Cited by 134 publications

References 68 publications

A Flexible and Low-Cost Tactile Sensor Produced by Screen Printing of Carbon Black/PVA Composite on Cellulose Paper

A Flexible and Low-Cost Tactile Sensor Produced by Screen Printing of Carbon Black/PVA Composite on Cellulose Paper

Flexible inorganic bioelectronics

Synergistic Resistance Modulation toward Ultrahighly Sensitive Piezoresistive Pressure Sensors

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