Stretchable, breathable, and highly sensitive capacitive and self-powered electronic skin based on core–shell nanofibers

Uzabakiriho, Pierre Claver; Wang, Meng; Ma, Chao; Zhao, Gang

doi:10.1039/d2nr00444e

Cited by 30 publications

(13 citation statements)

References 59 publications

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“…Here, we suggested a versatile technique to assemble an ultrahighly stretchable yarn that consists of the TPU yarn, LM deposited to the surface of the TPU yarn, and nanofibers as the protective layer of the LM by simple electrospinning. It was found in our previous studies that liquid metal can be fully patterned onto a TPU nanofiber film. , The obtained TPU/LM/NFs yarn has shown an excellent large strain range (≈548%) and a high strength (≈40 MPa). The TPU/LM/NFs yarn could be utilized as highly stretchable and deformable conductors to charge a mobile phone or for data transfer.…”

Section: Introductionmentioning

confidence: 75%

“…Second, the LM was printed on the obtained stretchable nanoyarn; based on our previous study, it was confirmed that the LM can well adhere to the TPU surface. 31,34,35 Figure 1a(ii) shows the LM successfully printed on the TPU nanoyarn. Finally, TPU/LM was covered by TPU nanofibers not only to protect the LM but also to strengthen it, which was adhered to the layer of the LM/TPU by making a thin layer of TPU/LM/NFs as shown in Figure 1a(iii).…”

Section: Resultsmentioning

confidence: 99%

“…It was found in our previous studies that liquid metal can be fully patterned onto a TPU nanofiber film. 31,34 The obtained TPU/ LM/NFs yarn has shown an excellent large strain range (≈548%) and a high strength (≈40 MPa). The TPU/LM/NFs yarn could be utilized as highly stretchable and deformable conductors to charge a mobile phone or for data transfer.…”

Section: Introductionmentioning

confidence: 98%

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High-Strength and Extensible Electrospun Yarn for Wearable Electronics

Uzabakiriho

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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Stretchable conductive yarns have received significant consideration in the direction of wearable and flexible electronics. Wearable electronic structures need strong materials to assure stability, durability, and an extensive range of strain to develop their applications. Therefore, manufacturing high-performance yarn-based devices with ultrarobustness and great stretchability with a simple, cost-effective, and scalable method remains a great challenge for wearable electronics. Here, a highly stretchable yarn with high performance is fabricated, which comprises a core TPU nanoyarn, successively decorated with a liquid metal (LM) layer, and a protective outer nanofiber layer. The ultrarobust (40 MPa) and high-strain (548%) conducting yarn presents potential applications in assembling strain sensors. Moreover, such a unique conductive yarn can be used as a highly deformable, stretchable conductor to charge a mobile phone or for data transfer, a sensor to monitor human activities, and as an effective control for a hand robot as well as for smart thermal management textile application. This research gives promising applications in the field of flexible and wearable electronics.

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Section: Introductionmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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High-Strength and Extensible Electrospun Yarn for Wearable Electronics

Uzabakiriho

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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“…In addition to the aforementioned, other hierarchal structures have also been adopted for triboelectric materials, which fall into three main categories: beaded fibers, [51] hollow fibers, [54] and special 3D structures. [65,170] Beaded fibers are hierarchical fibers between microparticles and fibers. This hierarchical structure increases the surface area and surface roughness of materials, which has considerable potential for applications in high-performance and waterproof self-powered TENGs.…”

Section: Characteristics and Properties Of Hierarchically Structured ...mentioning

confidence: 99%

Rational Design of Advanced Triboelectric Materials for Energy Harvesting and Emerging Applications

Duan

Peng

et al. 2022

Small Methods

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The properties of materials play a significant role in triboelectric nanogenerators (TENGs). Advanced triboelectric materials for TENGs have attracted tremendous attention because of their superior advantages (e.g., high specific surface area, high porosity, and customizable macrostructure). These advanced materials can be extensively applied in numerous fields, including energy harvester, wearable electronics, filtration, and self‐powered sensors. Hence, designing triboelectric materials as advanced functional materials is important for the development of TENGs. Herein, the structural modification methods based on electrospinning to improve the triboelectric properties and the latest research progress in this kind of TENGs are systematically summarized. Preparation methods and design trends of nanofibers, microspheres, hierarchical structures, and doping nanomaterials are highlighted. The factors influencing the formation and properties of triboelectric materials are considered. Furthermore, the latest progress on the applications of TENGs is systematically elaborated. Finally, the challenges in the development of triboelectric materials are discussed, thereby guiding researchers in the large‐scale application of TENGs.

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“…96,97 Core−shell TPU/ILs/PVDF-HFP nanofibers were prepared by coaxial electrospinning with the core solution of TPU and I L s ( 1 -e t h y l -3 -m e t h y l i m i d a z o l i u m b i s - (trifluoromethylsulfonyl)imide) and the shell solution of PVDF-HFP. 98 The flexible capacitive sensor fabricated by the core−shell fibers had a high sensitivity (0.718 kPa −1 ), an ultralow detection limit (7 Pa), and a good stability under a low linear pressure range (0−1.2 kPa). However, the skin compliance and permeability of the capacitance sensor based on ILs mentioned above are limited.…”

mentioning

confidence: 99%

Recent Advances in Physical Sensors Based on Electrospinning Technology

Cao

Chai

Tan

et al. 2023

ACS Materials Lett.

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In the past decades, the rapid development of the Internet of Things (IoT) technology and artificial intelligence (AI) has driven the research boom of physical sensors. Material selection, structure design, and performance research for physical sensors have attracted extensive attention from worldwide researchers in the field of advanced manufacturing. Significant technological progress has been made in the area of physical sensors for applications in various fields such as electronic skin, biomedicine, and tissue engineering. There are many methods (e.g., electrospinning, screen printing, or rotary coating) to prepare physical sensors. Among them, nanofibers or nanofiber membranes prepared by electrospinning have the advantages of a nanosize effect, high specific surface area, and high porosity over other reported materials used for physical sensors. In this review, the working principles of various physical sensors including pressure sensors, strain sensors, temperature sensors, and humidity sensors are first introduced; recent research progress of electrospun nanofiber-based physical sensors is then summarized. Finally, future research trends and associated challenges of large-scale adoption of electrospun physical sensors are proposed.

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Stretchable, breathable, and highly sensitive capacitive and self-powered electronic skin based on core–shell nanofibers

Abstract: Fiber-based nanostructures are greatly desired for the improvement of wearable/flexible electronics which are stretchable, conformable, ﬂexible, long-term. Herein, an ultra-stretchable, breathable, and high sensitive flexible capacitive tactile sensor and triboelectric...

Cited by 30 publications

References 59 publications

High-Strength and Extensible Electrospun Yarn for Wearable Electronics

High-Strength and Extensible Electrospun Yarn for Wearable Electronics

Rational Design of Advanced Triboelectric Materials for Energy Harvesting and Emerging Applications

Recent Advances in Physical Sensors Based on Electrospinning Technology

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