Flexoelectricity, Triboelectricity, and Free Interfacial Charges

Triboelectricity has been a topic of some confusion for many years, probably because it is very diverse and some of the fundamental science has not been clear. This is now starting to change. A few years ago, the importance of flexoelectricity at asperities is pointed out. That paper exploited the e...

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Vydané v:Small (Weinheim an der Bergstrasse, Germany) Ročník 21; číslo 28; s. e2310546 - n/a
Hlavní autori: Marks, L. D., Olson, K. P.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Germany Wiley Subscription Services, Inc 01.07.2025
John Wiley and Sons Inc
Predmet:
Charge transfer
contact electrification
Contact potentials
displacement field
Electrostatics
flexoelectricity
triboelectricity
triboelectricity
contact electrification
displacement field
flexoelectricity
ISSN:1613-6810, 1613-6829, 1613-6829
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Popis
Shrnutí:Triboelectricity has been a topic of some confusion for many years, probably because it is very diverse and some of the fundamental science has not been clear. This is now starting to change. A few years ago, the importance of flexoelectricity at asperities is pointed out. That paper exploited the established physics of compensation of bound surface or interfacial charges without going into detail. The purpose of this paper is to expand further on this, mapping from the established physics of electrostatics with contact potentials and Maxwell's displacement field to the underlying fundamentals of charge transfer in triboelectricity. Examples from the published literature are used to illustrate this. In the discussion, some of the open questions and challenges to the community are mentioned. What is observed macroscopically for triboelectric charging as shown on the left involves polarization, bound surface charges, and free charges as shown on the right.
Bibliografia:ObjectType-Article-1
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Dedicated on his 60th birthday to the first student who followed the science, not the electron
ISSN:1613-6810
1613-6829
1613-6829
DOI:10.1002/smll.202310546