Ferroelectrically augmented contact electrification enables efficient acoustic energy transfer through liquid and solid media

Kim, Hyun Soo; Hur, Sunghoon; Lee, Dong Gyu; Shin, Jong‐Shik; Qiao, Huimin; Mun, Seunguk; Lee, Hoon-Taek; Moon, Wonkyu; Kim, Yunseok; Baik, Jeong Min; Kang, Chong‐Yun; Jung, Jong Hoon; Song, Hyunwoo

doi:10.1039/d1ee02623b

Cited by 33 publications

(8 citation statements)

References 41 publications

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“…Recently, ultrasound has been revisited as a promising way to deliver power safely into implanted medical devices. TENGs proved to play a crucial role in converting externally applied ultrasound into internal electricity inside the body, eliminating the need for replacement batteries that entail additional surgery (Figure c). − Sound is another green energy source for harvesting that exists everywhere. Various concepts of TENGs for sound energy harvesting have been reported, including an acoustic core–shell resonance harvester for the application of artificial cochleae based on the piezo-triboelectric effect (Figure d), a dual-tube Helmholtz resonator-based TENG, an integrated TENG with an electrospun polymer tube, and a 3D-printed acoustic TENG for a self-powered edge sensing system .…”

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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“…Nonbioresorbable implantable TENGs (I-TENGs) and B-TENGs can be categorized according to the frequency of the mechanical motion involved (Figure C). Low-frequency mechanical energy refers to biomechanical energy (e.g., body motion, organ movement, and vascular dynamics), ,,, and high-frequency mechanical energy corresponds to audible sounds and ultrasounds. ,,,,,, Regardless of the frequency range, the working mechanisms of TENGs are the same, that is, based on the coupling of the triboelectric effect and electrostatic induction. However, the detailed mechanical dynamics of the triboelectric layers, device configurations, and output characteristics differ.…”

Section: Working Principles and Materials For B-tengsmentioning

confidence: 99%

Advances in Bioresorbable Triboelectric Nanogenerators

Kang,

Lee,

Hyun

et al. 2023

Chem. Rev.

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With the growing demand for next-generation health care, the integration of electronic components into implantable medical devices (IMDs) has become a vital factor in achieving sophisticated healthcare functionalities such as electrophysiological monitoring and electroceuticals worldwide. However, these devices confront technological challenges concerning a noninvasive power supply and biosafe device removal. Addressing these challenges is crucial to ensure continuous operation and patient comfort and minimize the physical and economic burden on the patient and the healthcare system. This Review highlights the promising capabilities of bioresorbable triboelectric nanogenerators (B-TENGs) as temporary self-clearing power sources and self-powered IMDs. First, we present an overview of and progress in bioresorbable triboelectric energy harvesting devices, focusing on their working principles, materials development, and biodegradation mechanisms. Next, we examine the current state of on-demand transient implants and their biomedical applications. Finally, we address the current challenges and future perspectives of B-TENGs, aimed at expanding their technological scope and developing innovative solutions. This Review discusses advancements in materials science, chemistry, and microfabrication that can advance the scope of energy solutions available for IMDs. These innovations can potentially change the current health paradigm, contribute to enhanced longevity, and reshape the healthcare landscape soon.

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“…However, in practical applications, the microprocessor used by the controller generally cannot directly generate sine signals but can generate triangular signals and pulse signals, so it is necessary to add a sine signal generation circuit. In order to simplify the circuit, this paper proposes using the triangular signal or the pulse signal as the excitation signal of the inductance coil [34][35][36][37], analyzes the demodulation principle of the sine signal, triangle signal, and pulse signal, establishes the simulation circuit model, and compares the three excitation signals. First, the bridge circuit outputs the AC voltage signal to the differential circuit and performs a difference calculation on the voltage at the public terminal of the coil and the voltage at the public terminal of resistors R1 and R2.…”

Section: Comparison Of Three Excitation Signalsmentioning

confidence: 99%

Effect of Excitation Signal on Double-Coil Inductive Displacement Transducer

Yang

et al. 2023

Sensors

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A double-coil inductive displacement transducer is a non-contact element for measuring displacement and is widely used in large power equipment systems such as construction machinery and agricultural machinery equipment. The type of coil excitation signal has an impact on the performance of the transducer, but there is little research on this. Therefore, the influence of the coil excitation signal on transducer performance is investigated. The working principle and characteristics of the double-coil inductive displacement transducer are analyzed, and the circuit simulation model of the transducer is established. From the aspects of phase shift, linearity, and sensitivity, the effects of a sine signal, a triangle signal, and a pulse signal on the transducer are compared and analyzed. The results show that the average phase shift, linearity, and sensitivity of the sine signal were 11.53°, 1.61%, and 0.372 V/mm, respectively; the average phase shift, linearity and sensitivity of the triangular signal were 1.38°, 1.56%, and 0.300 V/mm, respectively; and the average phase shift, linearity, and sensitivity of the pulse signal were 0.73°, 1.95%, and 0.621 V/mm, respectively. It can be seen that the phase shift of a triangle signal and a pulse signal is smaller than that of a sine signal, which can result in better signal phase-locked processing. The linearity of the triangle signal is better than the sine signal, and the sensitivity of the pulse signal is better than that of the sine signal.

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Ferroelectrically augmented contact electrification enables efficient acoustic energy transfer through liquid and solid media

Abstract: As demands for portable electronic devices grow, wireless energy transfer (WET) has started to become readily available. Until now, studies on WET have been mainly based on the electromagnetic (EM)...

Cited by 33 publications

References 41 publications

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

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

Advances in Bioresorbable Triboelectric Nanogenerators

Effect of Excitation Signal on Double-Coil Inductive Displacement Transducer

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