Wearable high-performance pressure sensors based on three-dimensional electrospun conductive nanofibers

Kweon, O. Young; Lee, Sang Jin; Oh, Joon Hak

doi:10.1038/s41427-018-0041-6

Cited by 166 publications

(122 citation statements)

References 42 publications

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“…Fiber-based pressure sensors made via coatings methods are not as prominent as those used for strain sensing; however, some efforts have been made in this field [24,26,136]. While coating of entire fabrics to create pressure sensors has been explored [159][160][161][162][163][164][165], this discussion is limited to fiber and yarn based sensors. Pressure based fiber sensors generally work in capacitive modes [24,26,118,119,127], while few studies have explored resistive [114,117] sensing for pressure detection.…”

Section: Coatings For Fiber-based Pressure Sensorsmentioning

confidence: 99%

Electrically Conductive Coatings for Fiber-Based E-Textiles

Chatterjee

Tabor

Ghosh

2019

Fibers

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With the advent of wearable electronic devices in our daily lives, there is a need for soft, flexible, and conformable devices that can provide electronic capabilities without sacrificing comfort. Electronic textiles (e-textiles) combine electronic capabilities of devices such as sensors, actuators, energy harvesting and storage devices, and communication devices with the comfort and conformability of conventional textiles. An important method to fabricate such devices is by coating conventionally used fibers and yarns with electrically conductive materials to create flexible capacitors, resistors, transistors, batteries, and circuits. Textiles constitute an obvious choice for deployment of such flexible electronic components due to their inherent conformability, strength, and stability. Coating a layer of electrically conducting material onto the textile can impart electronic capabilities to the base material in a facile manner. Such a coating can be done at any of the hierarchical levels of the textile structure, i.e., at the fiber, yarn, or fabric level. This review focuses on various electrically conducting materials and methods used for coating e-textile devices, as well as the different configurations that can be obtained from such coatings, creating a smart textile-based system.

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Section: Coatings For Fiber-based Pressure Sensorsmentioning

confidence: 99%

Electrically Conductive Coatings for Fiber-Based E-Textiles

Chatterjee

Tabor

Ghosh

2019

Fibers

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“…Apart from studies based on single material, approaches taking advantage of hybrids or composites are widely explored. [110][111][112][113] For example, a heterostructure composed of metallic artificial atoms of Au colloidal nanocrystal (NC) and insulating artificial atoms of CdSe NCs was introduced for strain sensing. [110] Except for enhanced sensitivity, the synthesis of NCs can be conducted via all-solution wet chemical methods, which exhibits their advantage in wearable strain sensing applications with low cost.…”

Section: Physical Sensingmentioning

confidence: 99%

“…A pressure sensing example focuses on the combination of poly (vinylidene fluoride-co-hexafluoropropene) (PVDF-HFP) and PEDOT. [112] PVDF is a common piezoelectric material used in piezoresistive pressure sensors. By using 3D electrospinning and vapor deposition polymerization techniques, a sponge-like 3D mat composed of PVDF-HFP/PEDOT core/shell nanofibers was generated.…”

Section: Physical Sensingmentioning

confidence: 99%

Flexible Hybrid Sensors for Health Monitoring: Materials and Mechanisms to Render Wearability

et al. 2019

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201902133.Wearable electronics have revolutionized the way physiological parameters are sensed, detected, and monitored. In recent years, advances in flexible and stretchable hybrid electronics have created emergent properties that enhance the compliance of devices to our skin. With their unobtrusive attributes, skin conformable sensors enable applications toward real-time disease diagnosis and continuous healthcare monitoring. Herein, critical perspectives of flexible hybrid electronics toward the future of digital health monitoring are provided, emphasizing its role in physiological sensing. In particular, the strategies within the sensor composition to render flexibility and stretchability while maintaining excellent sensing performance are considered. Next, novel approaches to the functionalization of the sensor for physical or biochemical stimuli are extensively covered. Subsequently, wearable sensors measuring physical parameters such as strain, pressure, temperature, as well as biological changes in metabolites and electrolytes are reported. Finally, their implications toward early disease detection and monitoring are discussed, concluding with a future perspective into the challenges and opportunities in emerging wearable sensor designs for the next few years. Wearable SensorsRecent progress in flexible and stretchable electronic systems has ignited exciting applications in consumer electronics, human computer interactions, augmented reality devices, and electronic skins. [1][2][3] Among these, a significant interest lies in health monitoring, [4][5][6] where vital functions may be measured continuously. Continuous health monitoring is far more superior than conventional healthcare workflow as the conventional approach can only offer snapshots of the physiological condition Figure 3. Material substrates for flexible and stretchable electronics, highlighting the advantages of choices for each material type. a) Common polymeric materials by order of glass transition temperatures. Reproduced with permission. [29] Copyright 2015, Elsevier. b) Schematic representation of crosslinked elastomeric substrates possessing configuration entropy. Reproduced with permission. [22]

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“…Wearable and flexible sensors have received significant attention recently due to their friendly compatible with human body, wearability, and stable monitoring capabilities in human activities, personal health monitoring, artificial e‐skins, and so forth. In recent years, the strain sensors with various dimensions, such as one‐dimensional (1D) fibers or yarns, two‐dimensional films or sheets, and three‐dimensional architectures have been widely utilized to detect not only the large deformation of human activities, such as walking, running, bending the knees, elbows, and fingers, but also the subtle deformation, such as breathing, blood pressure, and pulse wave, etc. Aside from the improvement of the wide elongation range and high sensitivity of strain sensors, the interfacial integration with clothes substrate is essential for their wider adoption and wearable comfortable.…”

Section: Introductionmentioning

confidence: 99%

Stretchable and Designable Textile Pattern Strain Sensors Based on Graphene Decorated Conductive Nylon Filaments

Tian

Zhao

et al. 2019

Macro Materials & Eng

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Flexible sensors with stretchable and wearable characteristics have boosted wide interest in human motion detection and physiological signal monitoring. However, the majority of current sensors suffer from the lack of seamlessly integrated with clothes substrates, hindering their applications as “real” wearable devices. Herein, a facile low‐cost and scalable continuous capillary dip coating route is employed to deposit graphene inks onto nylon filaments to obtain graphene decorated nylon conductive filaments. The filaments exhibit noticeable promotion in electrical conductivity with remarkable laundry durability, and the electrical conductivity of our filaments could be up to 6.43 and 2.78 S m−1 before and after washing 10 times, respectively. Two kinds of conventional textile formation techniques, sewing and knitting, are utilized to form various textile pattern strain sensors from the conductive filaments as the building blocks, such as the linear‐type, knitted‐loop‐type, snail‐coil‐type sewed sensors and the tubular knitted fabric sensors respectively. The textile sensors with different patterns exhibited various sensing response, the knitted‐loop‐type sensor could reach the maximum strain 45.69% while the linear‐type one arrives at 13.64%. In addition, the above strain sensors exhibit high sensitivity and repeatability when monitoring the limb movement and human breathing.

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Wearable high-performance pressure sensors based on three-dimensional electrospun conductive nanofibers

Cited by 166 publications

References 42 publications

Electrically Conductive Coatings for Fiber-Based E-Textiles

Electrically Conductive Coatings for Fiber-Based E-Textiles

Flexible Hybrid Sensors for Health Monitoring: Materials and Mechanisms to Render Wearability

Stretchable and Designable Textile Pattern Strain Sensors Based on Graphene Decorated Conductive Nylon Filaments

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