Intrinsically stretchable multi-functional fiber with energy harvesting and strain sensing capability

Ryu, Jeongjae; Kim, Jaegyu; Oh, Jinwon; Lim, Seung-Chan; Sim, Joo Yong; Jeon, Jessie S.; No, Kwangsoo; Park, Steve; Hong, Seungbum

doi:10.1016/j.nanoen.2018.10.071

Cited by 96 publications

(72 citation statements)

References 40 publications

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“…In the similar manner with the 1D energy storage devices, 1D stretchable energy‐harvesting devices such as solar cells, nanogenerators, and fuel cells, are generally realized by coating electrodes and active materials on a single fiber substrate in a coaxial structure or by twisting 1D electrodes coated with two active materials . However, it has been more difficult to fabricate 1D stretchable energy‐harvesting devices compared to 1D stretchable storage devices, although stretchable planar energy harvesting devices have been more extensively developed . For example, because power conversion efficiency, the key factor in the development of photovoltaic devices, of 1D solar cells is generally lower than that of planar solar cells even if the 1D devices are not stretchable, achieving stretchable 1D solar cells with high performance has remained as a great challenge.…”

Section: D Stretchable Electronic Devices and Applicationsmentioning

confidence: 99%

Recent Advances in 1D Stretchable Electrodes and Devices for Textile and Wearable Electronics: Materials, Fabrications, and Applications

et al. 2019

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applications, and smart sportswear. [13][14][15][16][17] In this regard, stretchable and wearable electronic devices in the 1D form, which can be directly integrated into daily clothes without any inconsistency, are greatly promising for future wearable electronics. [18][19][20][21][22][23] In addition, the hierarchical property of the fibrous structures (fiber: a small and short piece of a strand, filament: a long strand, yarn: an intertwined 1D structure of fibers or filaments, and fabric: a flexible substance consisting of a network of yarns) makes 1D electronic devices and systems remarkably suitable for advanced wearable electronics. The 1D assemblies including the 1D electronic devices also have unique characteristics appropriate to wearable electronics such as softness, stretchability, breathability, and high tolerance to damage. [3] Stretchability, in particular, is one of the most important properties for practical wearable applications because smart clothes or textiles including such 1D electronic devices should be covered on soft and curved human body. [24] Furthermore, some parts of clothes are frequently stretched and deformed during natural movements in daily life, thereby increasing the importance of stretchability of 1D electronic devices. Although many of existing clothes have achieved certain stretchability with only rigid yarns through specific textile structures such as woven or knitted structures, the stretchability resulting from such textile structures is insufficient to cover high stretchability desired in specific applications. For example, high stretchability of textiles is highly required for sportswear in order to achieve a form-fitting property, high comfortability, and elasticity during exercise. For such purpose, various stretchable yarns such as spandex have been widely used in textile industry. These properties of textiles are also essential for various sensing applications of wearable and textile electronic, resulting that high stretchability should be achieved for the 1D electronic devices. [25,26] In addition, the high stretchability resulting from the use of stretchable conductive yarns can successfully prevent a bagging issue of smart textiles which degrades stability and reproducibility of the smart textiles. For achieving the 1D stretchable electronic devices and systems, the development of 1D stretchable electrodes such as conductive yarns or filaments with high electrical conductivity and stretchability is basically essential above other things. In this regard, recent advances toward developing various high-performance Research on wearable electronic devices that can be directly integrated into daily textiles or clothes has been explosively grown holding great potential for various practical wearable applications. These wearable electronic devices strongly demand 1D electronic devices that are light-weight, weavable, highly flexible, stretchable, and adaptable to comport to frequent deformations during usage in daily life. To this end, the development of 1D electrodes wit...

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Section: D Stretchable Electronic Devices and Applicationsmentioning

confidence: 99%

Recent Advances in 1D Stretchable Electrodes and Devices for Textile and Wearable Electronics: Materials, Fabrications, and Applications

et al. 2019

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“…As shown in the linear response of the sensitivity of DP‐MC, the multiconductive MWCNT layer made a dense conductive percolation network, which led to a stable signal response in the cycle test. As shown in Figure d, a single stretching–releasing cycle with DP‐MC showed approximately 6% hysteresis, which is lower than that of a previously reported fiber‐type strain sensor …”

Section: Resultsmentioning

confidence: 56%

Preparation and Characterization of Hybrid Structured MWCNT/UHMWPE Fiber Sensors for Strain Sensing and Load Bearing of Composite Structures

Park

Kim

2019

Adv Materials Technologies

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In this study, a hybrid (soft and strong) coaxial structured fiber sensor that has high load carrying capacity and high sensing performance for measuring mechanical strain is prepared by using a dry‐jet wet spinning system and simple dip‐coating method. The strong core of the fiber sensor is made of ultrahigh molecular weight polyethylene that has highly oriented molecular structure due to a hot‐stretching process to increase the tensile strength. The soft sheath of the fiber sensor is an electrically conductive layer composed of a multilayer structure with varying concentrations of multiwalled carbon nanotubes and polyurethane layers to enhance the sensing performance. A scanning electron microscope is used to investigate the surface morphology of the fiber sensors. Single filament tensile tests are performed to measure the mechanical properties of the fiber sensors. The signal‐to‐noise ratio, strain sensitivity, repeatability, and degree of hysteresis of the fiber sensors are measured during static and dynamic tensile tests to determine the sensing performance. Experimental results confirm that the hybrid structured fiber sensor shows significantly enhanced mechanical properties due to the control of the hot‐stretching process and significantly enhances sensing performances due to the control of the structural configuration of the conductive layers.

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“…Silver precursors have been reduced into silver nanoparticles on poly(styrene-blockbutadienstyrene) coated poly(p-phenyleneterephthalamide) fiber. [133] The sensor consisted of a piezoelectric P(VDF-TrFE)/PDMS composite layer sandwiched between stretchable piezoresistive electrodes composed of multi walled carbon nanotubes (MWCNT) and PEDOT:PSS. The textile-based matrix-type pressure sensor was applied as a human-machine interface to control machines.…”

Section: Conductive Materials Coated Fibersmentioning

confidence: 99%

“…The textile-based matrix-type pressure sensor was applied as a human-machine interface to control machines. [133] Among the most commonly used conductive materials, carbon-based nanomaterials, especially nano-and microstructured graphene, have attracted great attention as multifunctional advanced material for a range of applications since they possess ultra-high electrical conductivity, good electrothermal performance, and long-term chemical stability. The high electrical conductivity of this fabric was attributed to the improvement of uniformity, thickness, connectivity, and the emergence of PEDOT microcrystals on the multi-ply coatings.…”

Section: Conductive Materials Coated Fibersmentioning

confidence: 99%

Flexible Multifunctional Sensors for Wearable and Robotic Applications

Xie

Hisano

Zhu

et al. 2019

Adv Materials Technologies

248

172

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This review provides an overview of the current state‐of‐the‐art of the emerging field of flexible multifunctional sensors for wearable and robotic applications. In these application sectors, there is a demand for high sensitivity, accuracy, reproducibility, mechanical flexibility, and low cost. The ability to empower robots and future electronic skin (e‐skin) with high resolution, high sensitivity, and rapid response sensing capabilities is of interest to a broad range of applications including wearable healthcare devices, biomedical prosthesis, and human–machine interacting robots such as service robots for the elderly and electronic skin to provide a range of diagnostic and monitoring capabilities. A range of sensory mechanisms is examined including piezoelectric, pyroelectric, piezoresistive, and there is particular emphasis on hybrid sensors that provide multifunctional sensing capability. As an alternative to the physical sensors described above, optical sensors have the potential to be used as a robot or e‐skin; this includes sensory color changes using photonic crystals, liquid crystals, and mechanochromic effects. Potential future areas of research are discussed and the challenge for these exciting materials is to enhance their integration into wearables and robotic applications.

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Intrinsically stretchable multi-functional fiber with energy harvesting and strain sensing capability

Cited by 96 publications

References 40 publications

Recent Advances in 1D Stretchable Electrodes and Devices for Textile and Wearable Electronics: Materials, Fabrications, and Applications

Recent Advances in 1D Stretchable Electrodes and Devices for Textile and Wearable Electronics: Materials, Fabrications, and Applications

Preparation and Characterization of Hybrid Structured MWCNT/UHMWPE Fiber Sensors for Strain Sensing and Load Bearing of Composite Structures

Flexible Multifunctional Sensors for Wearable and Robotic Applications

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