Electrospun PEDOT:PSS–PVA nanofiber based ultrahigh-strain sensors with controllable electrical conductivity

Liu, Nishuang; Fang, Guojia; Wan, Jiawei; Zhou, Hai; Long, Hao; Zhao, Xingzhong

doi:10.1039/c1jm14491j

Cited by 187 publications

(141 citation statements)

References 24 publications

(37 reference statements)

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“…[100][101][102][103][104] Lou et al [100] have electrospun poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) nanofibers and encapsulated them with reduced graphene oxide (rGO) to form a rapid responsive pressure sensor. To date, there are typically three approaches to fabricate electrospun functional nanofibers for the realization of sensitive wearable sensors: (i) directly electrospin conductive polymers into functional nanofibers, [105,106] such as PEDOT:PSS, [107] poly aniline (PANI), [108] (ii) directly electrospin nanofibers by doping poly mer spinning solutions with graphene oxide, carbon, CNTs, or Cu, Ag nanoparticles, or (iii) electrospin nonconductive polymers into nanofibers first and then coat them with conductive materials by electron beam evaporation, [109] electroless deposition, electrochemical polymerization, in situ polymerization, [92,110] and so on. Strain sensor based on CNT and shape memory polymers has reported an impressive strain rate over 700% [103] strain and vacuum filtration based graphene nanopaper prepared by Yan and team [104] has shown strain rate over 100%.…”

Section: Materials Structures and Methods In Wearable Sensorsmentioning

confidence: 99%

Significance of Nanomaterials in Wearables: A Review on Wearable Actuators and Sensors

et al. 2018

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Powered by market hype, trends among youth, and enormous funds, wearable technology has propelled itself as one of the most discussed topics in the field during past few years. A number of different companies representing all throughout the world have already entered into the market with hundreds of different products like smart watches, fitness trackers, smart garments, and even different smart medical attachments.Together with the evolution of digital health care, the wearable electronics field has evolved rapidly during the past few years and is expected to be expanded even further within the first few years of the next decade. As the next stage of wearables is predicted to move toward integrated wearables, nanomaterials and nanocomposites are in the spotlight of the search for novel concepts for integration. In addition, the conversion of current devices and attachment-based wearables into integrated technology may involve a significant size reduction while retaining their functional capabilities. Nanomaterialbased wearable sensors have already marked their presence with a significant distinction while nanomaterial-based wearable actuators are still at their embryonic stage. This review looks into the contribution of nanomaterials and nanocomposites to wearable technology with a focus on wearable sensors and actuators.

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Section: Materials Structures and Methods In Wearable Sensorsmentioning

confidence: 99%

Significance of Nanomaterials in Wearables: A Review on Wearable Actuators and Sensors

et al. 2018

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“…These devices exhibited detectable responses at 20% strain and high mechanical robustness through elastic deformation. Liu et al [ 149 ] introduced a new type of stretchable strain sensor based on electrospun PEDOT:PSS-poly(vinyl alcohol) (PVA) nanofi bers. This type of strain sensor has excellent stability, fast response, and a high GF of up to about 396.…”

Section: Reviewmentioning

confidence: 99%

“…In addition, strain sensors in human-motion detection need to satisfy the following requirements: high stretchability, fl exibility, high sensitivity, high durability, fast response/recovery speeds, and conformability. [ 122 ] Therefore, various types of fl exible and stretchable strain sensing materials such as P(VDF-TrFE), [ 77,123 ] ZnO NWs, [124][125][126][127][128][129] ZnSnO 3 NWs, [ 130 ] CNTs, [ 31,119,131,132 ] CNT composites, [ 28,133 ] graphene, [ 36,[134][135][136][137][138][139] R-GO, [ 121,[140][141][142] R-GO composites, [ 10,34,143 ] Ag NWs, [ 33 ] polymeric nanofi bers, [ 30 ] carbon black (CB), [ 11,144 ] organic semiconductors, [ 32,145,146 ] metal NPs, [ 122 ] Si NWs, [ 147 ] GaInSn, [ 148 ] and conductive polymers [149][150][151][152]…”

Section: Flexible and Stretchable Strain Sensormentioning

confidence: 99%

Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human‐Activity Monitoringand Personal Healthcare

2016

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Flexible and stretchable physical sensors that can measure and quantify electrical signals generated by human activities are attracting a great deal of attention as they have unique characteristics, such as ultrathinness, low modulus, light weight, high flexibility, and stretchability. These flexible and stretchable physical sensors conformally attached on the surface of organs or skin can provide a new opportunity for human-activity monitoring and personal healthcare. Consequently, in recent years there has been considerable research effort devoted to the development of flexible and stretchable physical sensors to fulfill the requirements of future technology, and much progress has been achieved. Here, the most recent developments of flexible and stretchable physical sensors are described, including temperature, pressure, and strain sensors, and flexible and stretchable sensor-integrated platforms. The latest successful examples of flexible and stretchable physical sensors for the detection of temperature, pressure, and strain, as well as their novel structures, technological innovations, and challenges, are reviewed first. In the next section, recent progress regarding sensor-integrated wearable platforms is overviewed in detail. Some of the latest achievements regarding self-powered sensor-integrated wearable platform technologies are also reviewed. Further research direction and challenges are also proposed to develop a fully sensor-integrated wearable platform for monitoring human activity and personal healthcare in the near future.

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“…[1][2][3][4][5][6] In particular, electrically conductive polymer nanofibers have been suggested to be promising candidates as chemiresistive sensor materials. [7][8][9] The unique combination of high specific surface area, mechanical flexibility, room temperature operation, low cost of fabrication, and large range of conductivity change makes these materials particularly attractive as nanoscale resistance-based sensors.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Polyaniline Fibers as Highly Sensitive Room Temperature Chemiresistive Sensors for Ammonia and Nitrogen Dioxide Gases

Zhang

Kim

Chen

et al. 2014

Adv Funct Materials

187

105

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Electrospun polyaniline (PAni) fibers doped with different levels of (+)‐camphor‐10‐sulfonic acid (HCSA) are fabricated and evaluated as chemiresistive gas sensors. The experimental results, based on both sensitivity and response time, show that doped PAni fibers are excellent ammonia sensors and that undoped PAni fibers are excellent nitrogen dioxide sensors. The fibers exhibit changes in measured resistances up to 60‐fold for ammonia sensing, and more than five orders of magnitude for nitrogen dioxide sensing, with characteristic response times on the order of one minute in both cases. A time‐dependent reaction‐diffusion model is used to extract physical parameters from fitting experimental sensor data. The model is then used to illustrate the selection of optimal material design parameters for gas sensing by nanofibers.

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Electrospun PEDOT:PSS–PVA nanofiber based ultrahigh-strain sensors with controllable electrical conductivity

Cited by 187 publications

References 24 publications

Significance of Nanomaterials in Wearables: A Review on Wearable Actuators and Sensors

Significance of Nanomaterials in Wearables: A Review on Wearable Actuators and Sensors

Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human‐Activity Monitoringand Personal Healthcare

Electrospun Polyaniline Fibers as Highly Sensitive Room Temperature Chemiresistive Sensors for Ammonia and Nitrogen Dioxide Gases

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