A self-powered multi-functional sensor based on triboelectric nanogenerator for monitoring states of rotating motion

Lin, Senpeng; Zhu, Lei; Qiu, Ye; Jiang, Zhengyang; Wang, Yifei; Zhu, Jun; Wu, Huaping

doi:10.1016/j.nanoen.2021.105857

Cited by 31 publications

(17 citation statements)

References 43 publications

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“…Specifically, bidirectional rotation sensing is required for comprehensive joint rotation monitoring, which has been rarely developed and reported before. [105][106][107] Ratchet is one of the typical mechanical structures, which is characterized by a set of angled teeth in which a pawl engages, allowing the motion in one direction only. The ratchet mechanism can not only perform the contact-separation and lateral sliding procedure during rotation but also process multiple unique advantages such as simple [94] (assuming an 80 kg person was walking at a frequency of 1 Hz per cycle, and the walking speed of ≈4 km h construction, convenient manufacture, operational reliability, unidirectional, and intermittent movement.…”

Section: Structure Design Of the Mc-eh-hl Systemmentioning

confidence: 99%

A Motion Capturing and Energy Harvesting Hybridized Lower‐Limb System for Rehabilitation and Sports Applications

Gao

Zhang

et al. 2021

Advanced Science

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Lower-limb motion monitoring is highly desired in various application scenarios ranging from rehabilitation to sports training. However, there still lacks a cost-effective, energy-saving, and computational complexity-reducing solution for this specific demand. Here, a motion capturing and energy harvesting hybridized lower-limb (MC-EH-HL) system with 3D printing is demonstrated. It enables low-frequency biomechanical energy harvesting with a sliding block-rail piezoelectric generator (S-PEG) and lower-limb motion sensing with a ratchet-based triboelectric nanogenerator (R-TENG). A unique S-PEG is proposed with particularly designed mechanical structures to convert lower-limb 3D motion into 1D linear sliding on the rail. On the one hand, high output power is achieved with the S-PEG working at a very low frequency, which realizes self-sustainable systems for wireless sensing under the Internet of Things framework. On the other hand, the R-TENG gives rise to digitalized triboelectric output, matching the rotation angles to the pulse numbers. Additional physical parameters can be estimated to enrich the sensory dimension. Accordingly, demonstrative rehabilitation, human-machine interfacing in virtual reality, and sports monitoring are presented. This developed hybridized system exhibits an economic and energy-efficient solution to support the need for lower-limb motion tracking in various scenarios, paving the way for self-sustainable multidimensional motion tracking systems in near future.

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Section: Structure Design Of the Mc-eh-hl Systemmentioning

confidence: 99%

A Motion Capturing and Energy Harvesting Hybridized Lower‐Limb System for Rehabilitation and Sports Applications

Gao

Zhang

et al. 2021

Advanced Science

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“…With the rotational motion of the host, the sensors will generate electric pulses. In sensing of rotating speed, the linear relationship between the voltage peak value and the rotating speed could be utilized (Figure 15a) [109]. However, the linear relationship is approximate and not stable.…”

Section: Sensing Technologies In Rotational Motionmentioning

confidence: 99%

Recent Progress in Sensing Technology Based on Triboelectric Nanogenerators in Dynamic Behaviors

Yao

Zhang

Jiang

et al. 2022

Sensors

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Under the trend of the rapid development of the internet of things (IoT), sensing for dynamic behaviors is widely needed in many fields such as traffic management, industrial production, medical treatment, building health monitoring, etc. Due to the feature of power supply independence and excellent working performance under a low-frequency environment, triboelectric nanogenerators (TENGs) as sensors are attracting more and more attention. In this paper, a comprehensive review focusing on the recent advance of TENGs as sensors for dynamic behaviors is conducted. The structure and material are two major factors affecting the performance of sensors. Different structure designs are proposed to make the sensor suitable for different sensing occasions and improve the working performance of the sensors. As for materials, new materials with stronger abilities to gain or lose electrons are fabricated to obtain higher surface charge density. Improving the surface roughness of material by surface engineering techniques is another strategy to improve the output performance of TENG. Based on the advancement of TENG structures and materials, plenty of applications of TENG-based sensors have been developed such as city traffic management, human–computer interaction, health monitoring of infrastructure, etc. It is believed that TENG-based sensors will be gradually commercialized and become the mainstream sensors for dynamic sensing.

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“…Multifunctional sensors that can monitor various stimuli, such as temperature, force/strain, etc., are greatly desirable in smart systems and the Internet of things (IoT). − Conventionally, multifunctional detection was realized by integrating multiple sensors with a single function into one pixel, which generally hindered their practical applications in a lot of aspects, including signal disturbance, complex structural design, large power consumption, and the high cost in fabrication. − Developing a multifunctional sensor based on a single device is scientifically and practically significant. − …”

Section: Introductionmentioning

confidence: 99%

Multifunctional Sensors Based on a Silver Nanowires/PDMS Aerogel Composite

Han

2022

ACS Appl. Electron. Mater.

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A multifunctional sensor that combines force/strain and temperature sensing functions into a single element is much more advantageous in saving space and avoiding technical complexity than integrating multiple sensing elements together. In this work, we realized force/strain and temperature sensing with a lightweight aerogel composite of silver nanowires and poly(dimethylsiloxane) (AgNWs/ PDMS). The AgNWs/PDMS aerogel composite was prepared using a sugar cube as a sacrificial template, and the AgNWs were uniformly distributed on the inner surface of the porous structure. Multifunctional sensors made of the AgNWs/PDMS aerogel composite show sensitive responses to various stimuli in resistivity. When serving as a force/strain sensor, it exhibits an excellent sensitivity (gauge factor ∼32) in the strain range of 60−90%. While working as a temperature sensor, the multifunctional sensor presents a temperature sensitivity of 0.33%/°C. Moreover, the porous aerogel structures can also be used to absorb pollutants such as oil and organic solvents, which will make them revive once their sensing function degrades. The proposed composite shows great potential in multifunctional wearable devices, sensor arrays for the Internet of things, and pollutant cleaning.

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A self-powered multi-functional sensor based on triboelectric nanogenerator for monitoring states of rotating motion

Cited by 31 publications

References 43 publications

A Motion Capturing and Energy Harvesting Hybridized Lower‐Limb System for Rehabilitation and Sports Applications

A Motion Capturing and Energy Harvesting Hybridized Lower‐Limb System for Rehabilitation and Sports Applications

Recent Progress in Sensing Technology Based on Triboelectric Nanogenerators in Dynamic Behaviors

Multifunctional Sensors Based on a Silver Nanowires/PDMS Aerogel Composite

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