Triboelectric Charging Between Polytetrafluoroethylene and Metals

Greason, W.D.; Oltean, I.M.; Kucerovsky, Z.; Ieta, Adrian

doi:10.1109/tia.2004.824439

Cited by 32 publications

(14 citation statements)

References 52 publications

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“…A tribocharging effect was also observed in the regions indicated by the blue circles, which could have been due to charge dispersion and the breaking of chemical bonds caused by the movement of the tip over the film, with consequent transfer of electrons between the materials [20,21]. Electrification due to friction can occur with or without the breaking of bonds, with voltage differences caused by contact or thermoelectric effects [22,23]. On the other hand, from the perspective of mechanoemission, wear is considered as a simple plastic deformation with the breaking of adhesive and chemical bonds [24].…”

Section: Film Analysis Using Raman Spectroscopymentioning

confidence: 99%

Evaluation of Triboelectricity in Diamond-Like Coatings Containing Silver Nanoparticles Using Afm and KPFM

Vieira¹,

Maciel²,

Pessoa³

et al. 2014

ABM Proceedings

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Kelvin probe force microscopy (KPFM) can be used to monitor electrostatic charges on the surfaces of materials. In this paper, we describe the use of KPFM to evaluate the electrostatic effect induced by silver nanoparticles incorporated as clusters in diamond-like carbon (DLC) films, before and after scratching. The results are compared to those obtained for DLC films without silver nanoparticles. Raman spectroscopy was used to identify the DLC signature, and energy dispersive X-ray spectroscopy (EDX) was used to confirm the presence of silver in the film. The morphology of the DLC film containing silver was investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The findings suggest that the incorporation of silver nanoparticles in amorphous materials could offer new options for electrostatic energy storage on the surfaces of these materials.Ag surface were also observed, which could be attributed to charge transfer between separate silver clusters.

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Section: Film Analysis Using Raman Spectroscopymentioning

confidence: 99%

Evaluation of Triboelectricity in Diamond-Like Coatings Containing Silver Nanoparticles Using Afm and KPFM

Vieira¹,

Maciel²,

Pessoa³

et al. 2014

ABM Proceedings

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“…Further, the surface work function of a material is important for charging, especially for triboelectric charging. The polarity and maximum potential between the particles of two materials to be separated are determined by the difference in their surface work functions [37][38][39][40].…”

Section: Chargingmentioning

confidence: 99%

“…While the charge quickly decays on the metal, insulators get charged and can keep the charge on contact with metals [30,40,[129][130][131][132][133][134][135][136]. The triboelectric charging between insulators and metals can be exploited to influence the triboelectric charging step of particle mixtures, for example, by modification of the wall material of the tribocharging device [115,137].…”

Section: Contact Charging Between Insulators and Metalsmentioning

confidence: 99%

Electrostatic Separation

Dötterl

Wachsmuth

Waldmann

et al. 2016

Ullmann's Encyclopedia of Industrial Chemistry

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“…The current study was performed using ab initio density function theory (DFT)/time-dependent density function theory (TDDFT) modeling of charge transfer states of several tribopairs, namely, PTFE was chosen as a main reference for tribopairs since it is known to be negatively charged in most tribocontacts [37][38][39] and has one of the highest work functions. In addition, the Fe 2 O 3 and SiO 2 tribopair was studied since this system is of technological importance.…”

Section: Introductionmentioning

confidence: 99%

Electron Transfer in Electrical Tribocharging Using a Quantum Chemical Approach

Nikitina¹,

Barthel²,

Heinemann³

2009

jist

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Electrical tribocharging is a fundamental physicochemical phenomenon and the basis of electrophotographic development. Despite extensive study, a complete understanding of the mechanism-commonly referred to as electron or ion transferremains unclear. Using a quantum chemical (QCh) approach, we studied the electron charge transfer (ECT) as one possible atomicscale mechanism of tribocharging. We also describe ECT for several systems based on two materials in contact (tribopairs). Methods of density function theory and time-dependent density function theory were applied to QCh modeling using a cluster approach. A series of energetic and charge characteristics at the atomic level were calculated: including the highest-and lowest-occupied molecular orbitals (respectively) and the Fermi levels of complex components in their individual (free) as well as contact states, before and after electron excitation, ECT-excited energy states, charge distribution in the complexes, and the dipole moments of the excited complexes with ECT. Correlations were evaluated between the transferred charges and dipole moments and between transferred charges and Fermi levels. Furthermore, we could show that the QCh analysis offers insight into the ranking of tribocharging agents based on their chemical nature.

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Triboelectric Charging Between Polytetrafluoroethylene and Metals

Cited by 32 publications

References 52 publications

Evaluation of Triboelectricity in Diamond-Like Coatings Containing Silver Nanoparticles Using Afm and KPFM

Evaluation of Triboelectricity in Diamond-Like Coatings Containing Silver Nanoparticles Using Afm and KPFM

Electrostatic Separation

Electron Transfer in Electrical Tribocharging Using a Quantum Chemical Approach

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