A flexible self-powered T-ZnO/PVDF/fabric electronic-skin with multi-functions of tactile-perception, atmosphere-detection and self-clean

He, Haoxuan; Fu, Yongming; Zang, Weili; Wang, Qiang; Xing, Lili; Zhang, Yan; Xue, Xinyu

doi:10.1016/j.nanoen.2016.11.020

Cited by 191 publications

(98 citation statements)

References 62 publications

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“…Reproduced with permission. [142] Copyright 2017, Elsevier Ltd. g) Electrospinning based e-skin fabrication with handheld electrospinning device, bending of e-skin attached hand, and its voltage response. b) Schematic of a capacitive sensor in response to tensile strain (left), normal pressure (middle), and finger approaching/touching (right).…”

Section: Wwwadvmatde Wwwadvancedsciencenewscommentioning

confidence: 99%

“…[137] When compared with resistant strain sensors, the capacitive strain sensors are more suitable for large strain monitoring because of their lower sensitivity. [142] In another work, a piezoelectric nanogenerator with single-electrode configuration was developed by electrospun PVDF nanofibers which enables steady-state external strain sensing (Figure 7g). A variety of piezoelectric nanomaterials including zinc oxide (ZnO) nanowires, polylactic acid, PVDF-TrFE, and PVDF nanofibers have been utilized to exploit wearable strain sensors.…”

Section: Wwwadvmatde Wwwadvancedsciencenewscommentioning

confidence: 99%

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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: Wwwadvmatde Wwwadvancedsciencenewscommentioning

confidence: 99%

Section: Wwwadvmatde Wwwadvancedsciencenewscommentioning

confidence: 99%

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

et al. 2018

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“…[ 31 ] However, ZnO as a n‐type semiconductor has a wide bandgap (≈3.3 eV) and rapid recombination of photon‐generated carriers. [ 32,33 ] Interestingly, wurtzite ZnO draws more attention because of its inherent piezotronic effect and piezo‐phototronic effect, [ 1,2,14,34–36 ] with the internal coupling of piezoelectric, semiconducting, and photonic properties. [ 37 ] When ZnO is subjected to an external mechanical force, a piezotronic potential (piezopotential) can be generated, [ 2 ] which could modulate the migration and separation of internal charge carriers, finally enhancing photocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Piezo‐Photoelectric Catalysis with Oriented Carrier Migration in Asymmetric Au−ZnO Nanorod Array

Xiang

Liu

et al. 2020

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Current photocatalytic semiconductors often have low catalytic performance due to limited light utilization and fast charge carrier recombination. Formation of Schottky junction between semiconductors and plasmonic metals can broaden the light absorption and facilitate the photon‐generated carriers separation. To further amplify the catalytic performance, herein, an asymmetric gold‐zinc oxide (Asy‐Au−ZnO) nanorod array is rationally designed, which realizes the synergy of piezocatalysis and photocatalysis, as well as spatially oriented electron−hole pairs separation, generating a significantly enhanced catalytic performance. In addition to conventional properties from noble metal/semiconductor Schottky junction, the rationally designed heterostructure has several additional advantages: 1) The piezoelectric ZnO under light and mechanical stress can directly generate charge carriers; 2) the Schottky barrier can be reduced by ZnO piezopotential to enhance the injection efficiency of hot electrons from Au nanoparticles to ZnO; 3) the unique asymmetric nanorod array structure can achieve a spatially directed separation and migration of the photon‐generated carriers. When ultrasound and all‐spectrum light irradiation are exerted simultaneously, the Asy‐Au−ZnO reaches the highest catalytic efficiency of 95% in 75 min for dye degradation. It paves a new pathway for designing unique asymmetric nanostructures with the synergy of photocatalysis and piezocatalysis.

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“…Figure S3 shows the comparative voltage output of the PVDF and electrospun PVDF/sodium niobate nanofibrous mat obtained under an applied compressive force of 10 N. The incorporation of sodium niobate in the PVDF matrix results in an output voltage of 25 V, which is higher compared to bare PVDF, thus indicating the enhanced piezoelectric response. The improved energy harvesting properties of the PVDF/sodium niobate is due to the enhancement in dipole alignments of PVDF and the synergetic effect of the piezoelectric ceramics [13,31]. The voltage output of the fabricated device under various compressive forces (10 to 40 N) is shown in Figure 2A-D.…”

Section: Resultsmentioning

confidence: 99%

Free-Standing PVDF/Reduced Graphene Oxide Film for All-Solid-State Flexible Supercapacitors towards Self-Powered Systems

et al. 2020

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The development of polymer-based devices has attracted much attention due to their miniaturization, flexibility, lightweight and sustainable power sources with high efficiency in the field of wearable/portable electronics, and energy system. In this work, we proposed a polyvinylidene fluoride (PVDF)-based composite matrix for both energy harvesting and energy storage applications. The physicochemical characterizations, such as X-ray diffraction, laser Raman, and field-emission scanning electron microscopy (FE-SEM) analyses, were performed for the electrospun PVDF/sodium niobate and PVDF/reduced graphene oxide composite film. The electrospun PVDF/sodium niobate nanofibrous mat has been utilized for the energy harvester which shows an open circuit voltage of 40 V (peak to peak) at an applied compressive force of 40 N. The PVDF/reduced graphene oxide composite film acts as the electrode for the symmetric supercapacitor (SSC) device fabrication and investigated for their supercapacitive properties. Finally, the self-charging system has been assembled using PVDF/sodium niobate (energy harvester), and PVDF/reduced graphene oxide SSC (energy storage) and the self-charging capability is investigated. The proposed self-charging system can create a pathway for the all-polymer based composite high-performance self-charging system.

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A flexible self-powered T-ZnO/PVDF/fabric electronic-skin with multi-functions of tactile-perception, atmosphere-detection and self-clean

Cited by 191 publications

References 62 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

Enhanced Piezo‐Photoelectric Catalysis with Oriented Carrier Migration in Asymmetric Au−ZnO Nanorod Array

Free-Standing PVDF/Reduced Graphene Oxide Film for All-Solid-State Flexible Supercapacitors towards Self-Powered Systems

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