A flexible pressure sensor based on an MXene–textile network structure

Li, Tongkuai; Chen, Longlong; Yang, Xiang; Zhang, Zhihan; Zhao, Tingting; Li, Xifeng

doi:10.1039/c8tc04893b

Cited by 195 publications

(148 citation statements)

References 44 publications

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“…Additionally, various nanomaterials can be conformally decorated on the surface of the fabric via simple solution processing without compromising the structure of the fabric. The aforementioned advantages of fabrics have led to the development of fabric‐based tactile sensors, and they typically exhibit high sensitivity and fast response . However, previously reported fabric‐based sensors still have the limitations of conventional tactile sensors that utilize a change in contact resistance (Figure S1, Supporting Information).…”

Section: Introductionmentioning

confidence: 99%

Multi‐Layered, Hierarchical Fabric‐Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range

Pyo

Lee

Kim

et al. 2019

Adv Funct Materials

136

133

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Resistive tactile sensors based on changes in contact area have been extensively explored for a variety of applications due to their outstanding pressure sensitivity compared to conventional tactile sensors. However, the development of tactile sensors with high sensitivity in a wide pressure range still remains a major challenge due to the trade‐off between sensitivity and linear detection range. Here, a tactile sensor comprising stacked carbon nanotubes and Ni‐fabrics is presented. The hierarchical structure of the fabrics facilitates a significant increase in contact area between them under pressure. Additionally, a multi‐layered structure that can provide more contact area and distribute stress to each layer further improves the sensitivity and linearity. Given these advantages, the sensor presents high sensitivity (26.13 kPa−1) over a wide pressure range (0.2–982 kPa), which is a significant enhancement compared with the results obtained in previous studies. The sensor also exhibits outstanding performances in terms of response time, repeatability, reproducibility, and flexibility. Furthermore, meaningful applications of the sensor, including wrist‐pulse‐signal analysis, flexible keyboards, and tactile interface, are successfully demonstrated. Based on the facile and scalable fabrication technique, the conceptually simple but powerful approach provides a promising strategy to realize next‐generation electronics.

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Section: Introductionmentioning

confidence: 99%

Multi‐Layered, Hierarchical Fabric‐Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range

Pyo

Lee

Kim

et al. 2019

Adv Funct Materials

136

133

View full text Add to dashboard Cite

show abstract

“…Similarly the broad peak at the diffraction angle between 15–17° represented the semi‐crystalline peak of the PAN corresponds to the (110) plane due to the hexagonal packing of rod like chains present in both NCs and the nanofibrous mat . The pentagram represents the characteristics of Fe 3 O 4 showing diffraction peaks that can be indexed to (311), (400), (422), (511), and (440) planes observed at 2θ =35.5, 43.1, 53.4, 57 and 62.6° respectively, which are in accordance with the JCPDS code of 00–089−0691 ,. The planes that are attributed to the silver are (111), (200) and (220) located at 2θ=38.1, 44.27 and 64.42° respectively with the JCPDS reference code (00‐04‐0783).…”

Section: Resultsmentioning

confidence: 96%

Hierarchical Architecture of Electrospun Hybrid PAN/Ag‐rGO/Fe₃O₄ Composite Nanofibrous Mat for Antibacterial Applications

2019

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Fabrication procedures are crucial for the design and development of composite nanofibrous materials in order to obtain effective antibacterial properties. In this work, solvent homogenization and blend electrospinning are the methodology followed for the synthesis of filler nanomaterials. Earlier the hydrothermally synthesized filler rGO/Fe nanocomposites (NCs) was incorporated through the hierarchical combination onto the PAN/Ag blend to obtain PAN/Ag-rGO/Fe 3 O 4 composite polymeric melt. Further the homogenous solution was fed into the electrospinning setup which utilizes the electrostatic forces to form one-dimensional (1D) nanofibers and on further deposition leads to the formation of nanofibrous mat. The obtained nanofibrous mat was characterized by various ana-lytical techniques in order to study its innate material properties and behaviour. The quality and composition of the nanofibrous mat along with its nanocomposite counterparts were investigated by XPS and Raman spectroscopic analysis for comparison. Apart from the conventional antibacterial assays that are followed in several studies, the present work also demonstrated the antibacterial efficacy of the nanomaterial through estimation of live/dead bacteria by the flow cytometry method. These quantitative assessments gives information associated with the antibacterial effect of the nanomaterials which will establish the practicality and feasibility for the development of such nano-fillers functionalized nanofibrous filter for water purification.

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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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A flexible pressure sensor based on an MXene–textile network structure

Abstract: High-performance pressure sensors have attracted considerable attention recently due to their promising applications in touch displays, wearable electronics, human–machine interfaces, and real-time physiological signal perception.

Cited by 195 publications

References 44 publications

Multi‐Layered, Hierarchical Fabric‐Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range

Multi‐Layered, Hierarchical Fabric‐Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range

Hierarchical Architecture of Electrospun Hybrid PAN/Ag‐rGO/Fe₃O₄ Composite Nanofibrous Mat for Antibacterial Applications

Synergistic Resistance Modulation toward Ultrahighly Sensitive Piezoresistive Pressure Sensors

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A flexible pressure sensor based on an MXene–textile network structure

Abstract: High-performance pressure sensors have attracted considerable attention recently due to their promising applications in touch displays, wearable electronics, human–machine interfaces, and real-time physiological signal perception.

Cited by 195 publications

References 44 publications

Multi‐Layered, Hierarchical Fabric‐Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range

Multi‐Layered, Hierarchical Fabric‐Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range

Hierarchical Architecture of Electrospun Hybrid PAN/Ag‐rGO/Fe3O4 Composite Nanofibrous Mat for Antibacterial Applications

Synergistic Resistance Modulation toward Ultrahighly Sensitive Piezoresistive Pressure Sensors

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Hierarchical Architecture of Electrospun Hybrid PAN/Ag‐rGO/Fe₃O₄ Composite Nanofibrous Mat for Antibacterial Applications