Research methods of contact electrification: Theoretical simulation and experiment

Zhang, Zhinan; Yin, Nian; Wu, Zishuai; Pan, Shuaihang; Wang, Daoai

doi:10.1016/j.nanoen.2020.105501

Cited by 25 publications

(17 citation statements)

References 112 publications

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“…Although CE was recorded first as early as 2600 years ago during ancient Greek civilization, the mechanism behind CE is still on debate regarding to if CE is due to electron transfer (7,8), ion transfer (9,10), or even materials species transfer (11,12). The research on the mechanism of CE recently enormously evolved with modern technologies (13,14). With some unexplainable even contradictory observations (15)(16)(17)(18)(19), it seems that no one mechanism can explain such a complex phenomenon (20).…”

Section: Introductionmentioning

confidence: 99%

Interface inter-atomic electron-transition induced photon emission in contact-electrification

Liao

et al. 2021

Sci. Adv.

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Contact electrification (CE) (or triboelectrification) is the phenomena where charges are produced through physical contact between two materials. Here we report the atomic featured photon emission spectra during CE between two solid materials. Photon emission provides the evidence that electron transfer takes place at the interface from an atom in one material to another atom in the other material during CE. This process is the contact electrification induced interface photon emission spectroscopy (CEIIPES). It naturally paves a way to a spectroscopy corresponding to the CE at an interface, which might impact our understanding of the interaction between solids, liquids, and gases. The physics presented here could be expanded to Auger electron excitation, x-ray emission, and electron emission in CE for general cases, which remain to be explored. This could lead to a general field that may be termed as contact electrification induced interface spectroscopy (CEIIS).

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Section: Introductionmentioning

confidence: 99%

Interface inter-atomic electron-transition induced photon emission in contact-electrification

Liao

et al. 2021

Sci. Adv.

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“…Until now, it is a pity that simulation and modeling are seldomly used in depicting tribological processes and revealing the improved tribological performance in MMNCs. To fully understand the anti-wear mechanisms in MMNCs, simulation and modeling from atomic scale [104] up to macroscopic phenomena would be useful [162,163].…”

Section: Modeling and Simulationmentioning

confidence: 99%

Metal matrix nanocomposites in tribology: Manufacturing, performance, and mechanisms

et al. 2022

Self Cite

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Metal matrix nanocomposites (MMNCs) become irreplaceable in tribology industries, due to their supreme mechanical properties and satisfactory tribological behavior. However, due to the dual complexity of MMNC systems and tribological process, the anti-friction and anti-wear mechanisms are unclear, and the subsequent tribological performance prediction and design of MMNCs are not easily possible: A critical up-to-date review is needed for MMNCs in tribology. This review systematically summarized the fabrication, manufacturing, and processing techniques for high-quality MMNC bulk and surface coating materials in tribology. Then, important factors determining the tribological performance (mainly anti-friction evaluation by the coefficient of friction (CoF) and anti-wear assessment with wear rate) in MMNCs have been investigated thoroughly, and the correlations have been analyzed to reveal their potential coupling/synergetic roles of tuning tribological behavior of MMNCs. Most importantly, this review combined the classical metal/alloy friction and wear theories and adapted them to give a (semi-)quantitative description of the detailed mechanisms of improved anti-friction and anti-wear performance in MMNCs. To guarantee the universal applications of these mechanisms, their links with the analyzed influencing factors (e.g., loading forces) and characteristic features like tribo-film have been clarified. This approach forms a solid basis for understanding, predicting, and engineering MMNCs’ tribological behavior, instead of pure phenomenology and experimental observation. Later, the pathway to achieve a broader application for MMNCs in tribo-related fields like smart materials, biomedical devices, energy storage, and electronics has been concisely discussed, with the focus on the potential development of modeling, experimental, and theoretical techniques in MMNCs’ tribological processes. In general, this review tries to elucidate the complex tribo-performances of MMNCs in a fundamentally universal yet straightforward way, and the discussion and summary in this review for the tribological performance in MMNCs could become a useful supplementary to and an insightful guidance for the current MMNC tribology study, research, and engineering innovations.

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“…Wang invented TENG in 2012 [72] by using the coupling effect of contact CE and electrostatic induction to convert mechanical energy into electrical energy/electrical signals effectively. Notably, TENG is not limited to nanomaterials.…”

Section: First Principle Theory Of Tengmentioning

confidence: 99%

Advances in Smart Sensing and Medical Electronics by Self-Powered Sensors Based on Triboelectric Nanogenerators

Jiang

Zhu

et al. 2021

Micromachines

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With the rapid progress of artificial intelligence, humans are moving toward the era of the intelligent connection of all things. Therefore, the demand for sensors is drastically increasing with developing intelligent social applications. Traditional sensors must be triggered by an external power source and the energy consumption is high for equipment that is widely distributed and working intermittently, which is not conducive to developing sustainable green and healthy applications. However, self-powered sensors based on triboelectric nanogenerators (TENG) can autonomously harvest energy from the surrounding environment and convert this energy into electrical energy for storage. Sensors can also be self-powered without an external power supply, which is vital for smart cities, smart homes, smart transportation, environmental monitoring, wearable devices, and bio-medicine. This review mainly summarizes the working mechanism of TENG and the research progress of self-powered sensors based on TENG about the Internet of Things (IoT), robotics, human–computer interaction, and intelligent medical fields in recent years.

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Research methods of contact electrification: Theoretical simulation and experiment

Cited by 25 publications

References 112 publications

Interface inter-atomic electron-transition induced photon emission in contact-electrification

Interface inter-atomic electron-transition induced photon emission in contact-electrification

Metal matrix nanocomposites in tribology: Manufacturing, performance, and mechanisms

Advances in Smart Sensing and Medical Electronics by Self-Powered Sensors Based on Triboelectric Nanogenerators

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