A multi-hole resonator enhanced acoustic energy harvester for ultra-high electrical output and machine-learning-assisted intelligent voice sensing

Zhu, Guojian; Yi, Zhou; Si, Zeyu; Cheng, Yih–Shyang; Wu, Fei; Wang, Huan; Pan, Yaozong; Xie, Jun; Li, Chaobo; Chen, Aiying; Wang, Ranran; Sun, Jinru

doi:10.1016/j.nanoen.2023.108237

Cited by 10 publications

(6 citation statements)

References 41 publications

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“…(a) Mapping between the load resistance and output power and (b) open-circuit voltage of the acoustic TENG and MHAR-TENG at a frequency of 50–170 Hz . (c) Mapping relationship between the SPL and output voltage .…”

Section: Combination Of Nanogenerators and Acoustic Devicesmentioning

confidence: 99%

“…Zhao et al 25 investigated a resonator-based TENG (HR-TENG) based on a two-tube Helmholtz resonator that efficiently collects sound energy. As shown in Figure 5a, the HR-TENG consists of a Helmholtz resonator, a metal film 20 (c) Mapping relationship between the SPL and output voltage. 22 (d) The original music signal is compared with the detected signal of a commercial piezoelectric sensor in the fiber grid.…”

Section: Combination Of Nanogenerators and Acoustic Devicesmentioning

confidence: 99%

“…Zhu et al 20 introduced a multihole acoustic resonatorenhanced TENG (MHAR-TENG), which was coupled with a perforated plate resonator and a differential pressure sound receiver. Its open-circuit voltage is 347 V, its short-circuit current is 95 μA, and its power density is 8.9 W/m 2 .…”

Section: Combination Of Nanogenerators and Acoustic Devicesmentioning

confidence: 99%

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Application of Nanogenerators in the Field of Acoustics

Yu,

Shang,

Zheng

et al. 2023

ACS Appl. Electron. Mater.

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The nanogenerator is a device that can effectively convert the extra mechanical energy released by the environment or the human body into electrical energy. The device collects energy from the environment, such as wind, sound, and small mechanical energy, efficiently and with a low threshold. Because of their unique advantages and excellent output performance, nanogenerators have received wide attention in the field of energy harvesting. Coupled with its high flexibility, low power consumption, and the need for external energy storage devices to achieve complete self-powered characteristics, nanogenerators in other fields, such as acoustics, have high research and application value. The nanogenerators can not only greatly improve the flexibility, portability, and efficiency of the acoustic devices but also act as acoustic devices such as microphones and speakers. The structure and working principle of the triboelectric nanogenerators, piezoelectric nanogenerators, and pyroelectric nanogenerators and the successful combination of various nanogenerators with acoustic devices are reviewed. The feasibility of the application of the nanogenerator technology in the field of acoustics and the flexibility of the combination of nanogenerators and acoustic equipment are described, and the advantages of the equipment produced in combination of the two fields are briefly introduced. Finally, the development prospect and challenges of the nanogenerators in the field of acoustics are discussed, and personal suggestions are put forward.

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Section: Combination Of Nanogenerators and Acoustic Devicesmentioning

confidence: 99%

Section: Combination Of Nanogenerators and Acoustic Devicesmentioning

confidence: 99%

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Application of Nanogenerators in the Field of Acoustics

Yu,

Shang,

Zheng

et al. 2023

ACS Appl. Electron. Mater.

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“…How to combine high-efficiency low-frequency sound energy acquisition performance with high-quality sound International Journal of Energy Research sensing capabilities has always been a difficult challenge for TENG. To address this, Zhu et al [128] proposed a triboelectric nanogenerator with a porous acoustic resonator (MHAR-TENG), which couples a porous acoustic resonator and a differential pressure acoustic receiver. The MHAR-TENG, which is depicted in Figure 9(a), comprise a perforated plate, an acoustic TENG, and an acoustic resonant cavity.…”

Section: Aeh Based On Tengmentioning

confidence: 99%

Research Progress of Acoustic Energy Harvesters Based on Nanogenerators

Huang,

Du,

Xiang

et al. 2023

International Journal of Energy Research

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In the wake of the rapid development of the Internet of Things (IoT) and artificial intelligence (AI) technology, a huge amount of wireless sensing nodes (WSNs) is urgently in demand in all aspects of daily production and living, such as smart cities, smart transportation, and intelligent monitoring. However, it has become one of the crucial challenges in the development of IoT technology to fulfill the requirements of energy consumption for enormous amounts of WSNs. Therefore, it not only possesses great potential to realize in situ power supply of WSNs by harvesting environmental energy but also can address the problems of durability, maintenance, and cost that exist in battery power supply. In particular, acoustic energy is ubiquitous in the environment but not efficiently utilized. Meanwhile, piezoelectric nanogenerators (PENG) and triboelectric nanogenerators (TENG) are capable of accomplishing efficient conversion of broadband, high entropy, and weak energy as the new energy conversion technology. Therefore, the basic principle of acoustic energy harvester based on nanogenerators (NGs) is firstly discussed. Then, the advances of acoustic energy harvesters based on NGs in the viewpoint of acoustic energy resonator structures are systematically reviewed for the first time. This review not only covers the working mechanism, structural design, and application scenarios of acoustic energy harvesters but also explores the advances in ultrasonic energy harvesting based on NGs. Finally, existing challenges and prospects for future development are systematically discussed, which will facilitate the development of acoustic energy harvesting based on NGs.

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“…Self‐powered sensors have significant advantages because they do not require frequent battery replacements or maintenance. [ 15 , 16 , 17 , 18 ] To achieve self‐powered dual‐mode sensing, researchers have integrated piezoelectric/triboelectric sensors with capacitance/resistance sensors. [ 19 , 20 , 21 , 22 ] However, the integrated sensors are generally complex to manufacture, and the interaction between different types of sensors may lead to interference in signal transmission, thus affecting the accuracy of the measured data.…”

Section: Introductionmentioning

confidence: 99%

Self‐Powered Biomimetic Pressure Sensor Based on Mn–Ag Electrochemical Reaction for Monitoring Rehabilitation Training of Athletes

Yang,

Wang,

et al. 2024

Advanced Science

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Self‐powered pressure detection using smart wearable devices is the subject of intense research attention, which is intended to address the critical need for prolonged and uninterrupted operations. Current piezoelectric and triboelectric sensors well respond to dynamic stimuli while overlooking static stimuli. This study proposes a dual‐response potentiometric pressure sensor that responds to both dynamic and static stimuli. The proposed sensor utilizes interdigital electrodes with MnO2/carbon/polyvinyl alcohol (PVA) as the cathode and conductive silver paste as the anode. The electrolyte layer incorporates a mixed hydrogel of PVA and phosphoric acid. The optimized interdigital electrodes and sandpaper‐like microstructured surface of the hydrogel electrolyte contribute to enhanced performance by facilitating an increased contact area between the electrolyte and electrodes. The sensor features an open‐circuit voltage of 0.927 V, a short‐circuit current of 6 µA, a higher sensitivity of 14 mV/kPa, and outstanding cycling performance (>5000 cycles). It can accurately recognize letter writing and enable capacitor charging and LED lighting. Additionally, a data acquisition and display system employing the proposed sensor, which facilitates the monitoring of athletes’ rehabilitation training, and machine learning algorithms that effectively guide rehabilitation actions are presented. This study offers novel solutions for the future development of smart wearable devices.

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A multi-hole resonator enhanced acoustic energy harvester for ultra-high electrical output and machine-learning-assisted intelligent voice sensing

Cited by 10 publications

References 41 publications

Application of Nanogenerators in the Field of Acoustics

Application of Nanogenerators in the Field of Acoustics

Research Progress of Acoustic Energy Harvesters Based on Nanogenerators

Self‐Powered Biomimetic Pressure Sensor Based on Mn–Ag Electrochemical Reaction for Monitoring Rehabilitation Training of Athletes

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