Actuator and generator based on moisture-responsive PEDOT: PSS/PVDF composite film

Gong, Wei; Xia, Hong; Sun, Xiang‐Chao; Lv, Chao; Li, Shun‐Xin; Han, Bing; Guo, Qi; Shi, Quan; Wang, Yingshuai; Sun, Hong‐Bo

doi:10.1016/j.snb.2017.08.125

Cited by 57 publications

(35 citation statements)

References 38 publications

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“…Piezoelectric generators have received massive interest in energy harvesting technology due to their unique ability to capture the ambient vibrations to generate electric signals 20. The unique energy transduction of piezoelectric materials enables their applications in fields of energy harvesting, actuators,21 sensors,22 structural health monitoring, and use in biomedical devices 23. Numerous approaches have been used to fabricate piezoelectric generators, such as coating,24 spinning,25 depositing,26 and printing 27…”

Section: Introductionmentioning

confidence: 99%

Wearable Electronic Textiles from Nanostructured Piezoelectric Fibers

Mokhtari

Spinks

Fay

et al. 2020

Adv Materials Technologies

131

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to produce a new generation of smart garments.Such affordable smart garments could fulfil diverse applications, ranging from work wear in specific industries to the almost infinite scenarios of personal use including energy harvesting/storage, force/pressure measurement, porosity or color variation, and sensors (movement, temperature, chemicals). [1][2][3][4][5][6][7] However, performance, scalability, and cost problems have restricted the deployment of currently available smart textiles. To build smart textiles on an industrial scale, method of manufacturing and material selection are two important requirements. The approach of new energy materials and novel fabrication methods are essential to develop wearable technologies. Wearable energy generating devices that can be seamlessly integrated into garments are a critical component of the wearable electronics genre. Currently flexible fiber energy harvesters have attracted significant attention due to their ability to be integrated into fabrics, or stitched into existing textiles. Large-scale production of energy harvester fibers using conventional manufacturing processes, however, is still a challenge.Energy harvesting from environmental mechanical sources such as body movements including finger imparting, [8] pushing, [9] stretching, [10] bending, [11] twisting, [12] air flow, [13] transportation movement, [14] and sound waves [15] has attracted widespread attention to promote flexible self-powered devices. [16] The best common mechanical energy harvesting methods are based on piezoelectric materials. [17] Piezoelectric materials can be classified in three categories: piezoelectric ceramics, piezoelectric polymers, and piezoelectric composites. [18] Unlike the energy harvesters utilizing solar or thermal energy, performance of piezoelectric generators is generally not limited by environmental factors. [19] Piezoelectric generators have received massive interest in energy harvesting technology due to their unique ability to capture the ambient vibrations to generate electric signals. [20] The unique energy transduction of piezoelectric materials enables their applications in fields of energy harvesting, actuators, [21] sensors, [22] structural health monitoring, and use in biomedical devices. [23] Numerous approaches have been used to fabricate piezoelectric generators, such as coating, [24] spinning, [25] depositing, [26] and printing. [27] Wearable energy harvesting is of practical interest for many years and for diverse applications, including development of self-powered wireless sensors within garments for human health monitoring. Herein, a novel approach is reported to create wearable energy generators and sensors using nanostructured hybrid piezoelectric fibers and exploiting the enormous variety of textile architectures. It is found that high performance hybrid piezofiber is obtained using a barium titanate (BT) nanoparticle and poly(vinylidene fluoride) (PVDF) with a mass ratio of 1:10. These fibers are knitted to form a wearable energy generator that pr...

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Section: Introductionmentioning

confidence: 99%

Wearable Electronic Textiles from Nanostructured Piezoelectric Fibers

Mokhtari

Spinks

Fay

et al. 2020

Adv Materials Technologies

131

View full text Add to dashboard Cite

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“…Poly(vinylidene fluoride) (PVDF) is a promising organic material due to its excellent thermal and chemical stabilities, durability and biocompatibility . It is known that the outstanding crystal structure derived from the conformation of fluorine and hydrogen, which are periodically bonded to the PVDF chain, confers various capacitive responses, enabling electronic applications of PVDF in devices such as actuators, power generators and sensors …”

Section: Introductionmentioning

confidence: 99%

Fabrication of capacitive yarn torsion sensors based on an electrospinning coating method

Choi

Moon

Kim

et al. 2019

Polymer International

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A yarn‐based capacitive torsion sensor was produced using a simple electrospinning coating method. It was expected that nonwoven nanofiber mats, as a coating layer, would exhibit excellent performance owing to their high surface area and porous three‐dimensional nonwoven structure, which is more deformable than that of films. The electrospinning process was investigated by image analysis to generate a suitable structure of the nanofiber coating layer. The thickness of the layer was controlled by varying the electrospinning coating time (10, 20 and 30 min). Yarn sensors with coating layers of different thicknesses were manufactured by twisting two coated fibers, while simultaneously measuring the capacitance. The best sensitivity was observed with the 10 min coated yarn, due to the largest valid twist level range. It is proposed that the distance between the electrodes and the dielectric constant of the material play an important and complex role in the capacitive response of the twisted yarn, caused by the porous three‐dimensional nonwoven structure of the coated layer and the molecular mobility of the polymer. This simple coating method is expected to be useful in a wide range of applications, such as wearable devices, by facilitating convenient fabrication and repair of the flexible sensors. Moreover, high performance of the sensor could be realized due to the structural advantage of the sensing layer. © 2019 Society of Chemical Industry

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“…PEDOT:PSS is another material that has been used as a conductive coating in fabricating CP actuators. The fabrication of PEDOT:PSS actuators has been reported in combination with multi wall carbon nanotube, polyurethane/ionic liquid and Polyvinylidene fluoride [62][63][64]. CP actuators have been shown to exhibit both bending and linear movement.…”

Section: Actuating Mechanismmentioning

confidence: 99%

Actuator Materials: Review on Recent Advances and Future Outlook for Smart Textiles

Kongahage

Foroughi

2019

Fibers

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Smart textiles based on actuator materials are of practical interest, but few types have been commercially exploited. The challenge for researchers has been to bring the concept out of the laboratory by working out how to build these smart materials on an industrial scale and permanently incorporate them into textiles. Smart textiles are considered as the next frontline for electronics. Recent developments in advance technologies have led to the appearance of wearable electronics by fabricating, miniaturizing and embedding flexible conductive materials into textiles. The combination of textiles and smart materials have contributed to the development of new capabilities in fabrics with the potential to change how athletes, patients, soldiers, first responders, and everyday consumers interact with their clothes and other textile products. Actuating textiles in particular, have the potential to provide a breakthrough to the area of smart textiles in many ways. The incorporation of actuating materials in to textiles is a striking approach as a small change in material anisotropy properties can be converted into significant performance enhancements, due to the densely interconnected structures. Herein, the most recent advances in smart materials based on actuating textiles are reviewed. The use of novel emerging twisted synthetic yarns, conducting polymers, hybrid carbon nanotube and spandex yarn actuators, as well as most of the cutting–edge polymeric actuators which are deployed as smart textiles are discussed.

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Actuator and generator based on moisture-responsive PEDOT: PSS/PVDF composite film

Cited by 57 publications

References 38 publications

Wearable Electronic Textiles from Nanostructured Piezoelectric Fibers

Wearable Electronic Textiles from Nanostructured Piezoelectric Fibers

Fabrication of capacitive yarn torsion sensors based on an electrospinning coating method

Actuator Materials: Review on Recent Advances and Future Outlook for Smart Textiles

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