Nano-fiber based self-powered flexible vibration sensor for rail fasteners tightness safety detection

Meng, Yan; Yang, Jiayi; Liu, Shuangshuang; Xu, Wei; Chen, Guobin; Niu, Zihao; Wang, Meiqi; Deng, Tao; Qin, Yong; Han, Mengdi; Li, Xiuhan

doi:10.1016/j.nanoen.2022.107667

Cited by 17 publications

(13 citation statements)

References 38 publications

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“…Structural vibration, a type of mechanical motion, exists everywhere in our daily life from vehicles, railways, buildings, and bridges as well as in industrial environments, offering ubiquitous sources for harvesting . A variety of TENG devices for structural vibration harvesting and applications have been demonstrated, including a free-fixed TENG for train wheel energy harvesting and monitoring (Figure e), a multiple-mode TENG for harvesting the freight train carriage joints and self-powered freight train monitoring, and a self-powered vibration TENG based on electrospinning nanofibers for rail fasteners tightness safety detection . On the other hand, human motion energy is also an indispensable energy source for wearable and biomedical harvesting applications. − Human gesture sensing and real-time clinical human vital sign monitoring have been successfully realized via various kinds of TENGs, including a waterproof fabric-based multifunctional TENG (Figure f) , and a hierarchically designed high-performance stretchable TENG using ferroelectric barium-titanate-coupled 2D MXene (Ti 3 C 2 T x ) nanosheets, to name a few.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

et al. 2023

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Serious climate changes and energy-related environmental problems are currently critical issues in the world. In order to reduce carbon emissions and save our environment, renewable energy harvesting technologies will serve as a key solution in the near future. Among them, triboelectric nanogenerators (TENGs), which is one of the most promising mechanical energy harvesters by means of contact electrification phenomenon, are explosively developing due to abundant wasting mechanical energy sources and a number of superior advantages in a wide availability and selection of materials, relatively simple device configurations, and low-cost processing. Significant experimental and theoretical efforts have been achieved toward understanding fundamental behaviors and a wide range of demonstrations since its report in 2012. As a result, considerable technological advancement has been exhibited and it advances the timeline of achievement in the proposed roadmap. Now, the technology has reached the stage of prototype development with verification of performance beyond the lab scale environment toward its commercialization. In this review, distinguished authors in the world worked together to summarize the state of the art in theory, materials, devices, systems, circuits, and applications in TENG fields. The great research achievements of researchers in this field around the world over the past decade are expected to play a major role in coming to fruition of unexpectedly accelerated technological advances over the next decade.

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Section: Introductionmentioning

confidence: 99%

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

et al. 2023

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“…Triboelectric materials, such as polytetrafluoroethylene (PTFE), paper, polyethylene terephthalate (PET), fluorinated ethylene propylene (FEP), PDMS, polylactic acid (PLA), polyacrylonitrile (PAN), polyamide 6 (PA6), Al, silicon, SiO 2 , PVDF, and rubber in the form of films and nanofibers, have been developed for the construction of advanced acoustic sensors. [4,19,22,25,32,[90][91][92][93][94][95][96][97][98][99][100][101] Electrical insulating materials are suitable for serving as electronegative triboelectric materials in TENGs. Among them, PTFE is widely used as an electronegative triboelectric material in TENGs because PTFE has a strong ability to attract electrons.…”

Section: Triboelectric Mechanismmentioning

confidence: 99%

“…Therefore, Meng et al have utilized a flexible self-powered triboelectric electrostatic nanofibers-based vibration sensor to establish a real-time and efficient safety detection system for the tightness of rail fasteners, as shown in Figure 10a. [25] The sensor could be placed inside the rail to accurately identify the tightness of rail fasteners based on vibration characteristics, thus offering a valuable method for real-time monitoring of railway safety. However, the sensor's sensitivity, durability and reliability, installation and maintenance, and signal processing and analysis, may be affected by the railway environment and system.…”

Section: Structural Health Monitoringmentioning

confidence: 99%

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Insights into Materials, Physics, and Applications in Flexible and Wearable Acoustic Sensing Technology

Lin,

Duan,

Liu

et al. 2023

Advanced Materials

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Sound plays a crucial role in the perception of the world. It allows to communicate, learn, and detect potential dangers, diagnose diseases, and much more. However, traditional acoustic sensors are limited in their form factors, being rigid and cumbersome, which restricts their potential applications. Recently, acoustic sensors have made significant advancements, transitioning from rudimentary forms to wearable devices and smart everyday clothing that can conform to soft, curved, and deformable surfaces or surroundings. In this review, the latest scientific and technological breakthroughs with insightful analysis in materials, physics, design principles, fabrication strategies, functions, and applications of flexible and wearable acoustic sensing technology are comprehensively explored. The new generation of acoustic sensors that can recognize voice, interact with machines, control robots, enable marine positioning and localization, monitor structural health, diagnose human vital signs in deep tissues, and perform organ imaging is highlighted. These innovations offer unique solutions to significant challenges in fields such as healthcare, biomedicine, wearables, robotics, and metaverse. Finally, the existing challenges and future opportunities in the field are addressed, providing strategies to advance acoustic sensing technologies for intriguing real‐world applications and inspire new research directions.

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“…With the rapid development of artificial intelligence and fifth-generation mobile communication technology, human–machine interaction (HMI) plays a crucial role in bridging humans with machines and popularizing the internet of things. − Typically, tactile sensing is a key step in converting tactile actions into electrical signals for machines. , Various traditional sensors were studied for smart sensing, such as capacitive, , resistive, − and optical sensors, , which endure the problem of supplying external energy. Notably, the triboelectric sensor (TES) based on the coupling of triboelectric and electrostatic effects is designed to detect movement under a low-pressure range in the self-powered mode. − Due to the merits of unique self-powering, small size, high sensitivity, fast response, and low detection limits, the TES not only is conducive to solving the problem of replacing the power supply but also shows crucial potential in portable sensing for establishing HMI systems. − …”

Section: Introductionmentioning

confidence: 99%

Performance-Enhanced Flexible Self-Powered Tactile Sensor Arrays Based on Lotus Root-Derived Porous Carbon for Real-Time Human–Machine Interaction of the Robotic Snake

Tu,

Fang,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Flexible tactile sensors play an important role in the development of wearable electronics and human−machine interaction (HMI) systems. However, poor sensing abilities, an indispensable external energy supply, and limited material selection have significantly constrained their advancement. Herein, a self-powered flexible triboelectric sensor (TES) is proposed by integrating lotus-root-derived porous carbon (PC) into polydimethylsiloxane (PDMS). Owing to the superior charge capturing capability of PC, the PDMS/PC (PPC)-based TES exhibits an open-circuit voltage (V oc ) of 22.8 V when it is periodically patted by skin at the pressure of 2 N and the frequency of 1 Hz, which is 5 times higher than that of a pristine PDMS-based TES. Furthermore, the as-prepared self-powered TES exhibits a high sensitivity of 3.24 V kPa −1 below 15 kPa for detecting human motion signals, such as finger clicks, joint bends, etc. Last but not the least, after the assembly of a PPC-based TES array and construction of an HMI system, the robotic snake can be controlled remotely by recognizing finger touching signals. This work shows broad potential applications for the self-powered TES in the fields of intelligent robotics, flexible electronics, disaster relief, and intelligence spying.

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Nano-fiber based self-powered flexible vibration sensor for rail fasteners tightness safety detection

Cited by 17 publications

References 38 publications

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

Insights into Materials, Physics, and Applications in Flexible and Wearable Acoustic Sensing Technology

Performance-Enhanced Flexible Self-Powered Tactile Sensor Arrays Based on Lotus Root-Derived Porous Carbon for Real-Time Human–Machine Interaction of the Robotic Snake

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