The surface charge decay: a theoretical and experimental analysis

Navarro-Rodriguez, Mario; Palacios-Lidon, Elisa; Somoza, Andres M.

Publication:
The surface charge decay: a theoretical and experimental analysis

dc.contributor.author	Navarro-Rodriguez, Mario
dc.contributor.author	Palacios-Lidon, Elisa
dc.contributor.author	Somoza, Andres M.
dc.contributor.department	Física
dc.date.accessioned	2025-01-15T10:08:10Z
dc.date.available	2025-01-15T10:08:10Z
dc.date.issued	2022-11-05
dc.description	© 2022 The Author(s). This manuscript version is made available under the CC-BY-NC 4.0 license http://creativecommons.org/licenses/by-nc/4.0/. This document is the Published version of a Published Work that appeared in final form in Applied Surface Science. To access the final edited and published work see https://doi.org/10.1016/j.apsusc.2022.155437
dc.description.abstract	The ability to retain localized charges at the surface or interface of dielectric materials is a universal property that applies to many different fields such as tribocharging, charge nanopatterning, nanoxerography, etc. Once the surface is charged, its stability and subsequent discharging rate will determine the potential applications of a given system. This decay rate is properly defined by the macroscopic equations which depend on dielectric constants and conductivities of the two media. Here, we derive the equations to model the decay of charge distributions localized at the surface/interface of materials and solve them avoiding additional approximations made so far. Addressing the problem in the Fourier space, we arrive to a compact generic equation which provides a useful tool to determine both the bulk and surface conductivities of a material. Furthermore, we show that Kelvin Probe Force Microscopy (KPFM) is a particularly suited method to exploit this tool. Monitoring the charge decay of previously injected charge patches on silicon dioxide (SiO2), together with an appropriated data analysis, we verify the behavior predicted by our equations. This allows us to characterize the surface and bulk conductivities of layers as well as its dependence with the relative humidity.	es
dc.format	application/pdf	es
dc.format.extent	8	es
dc.identifier.citation	Applied Surface Science 610 (2023) 155437
dc.identifier.doi	https://doi.org/10.1016/j.apsusc.2022.155437
dc.identifier.issn	Print: 0169-4332
dc.identifier.issn	Electronic: 1873-5584
dc.identifier.uri	http://hdl.handle.net/10201/148453
dc.language	eng	es
dc.publisher	Elsevier	es
dc.relation	MCIN/AEI/10.13039/5011000110 33/ through the project PID2019-104272RB-C52, by “ERDF A way of making Europe” and the Fundación Séneca, Spain through the project 20860/PI/18. M.N work was financed by the grant PID2019-104272RB-C52/PRE2020-094503 funded by MCIN/AEI/10.13039/501100011033 and by “ ESF Investing in your future ”.	es
dc.relation.publisherversion	https://www.sciencedirect.com/science/article/pii/S0169433222029658	es
dc.rights	info:eu-repo/semantics/openAccess	es
dc.rights	Atribución-NoComercial 4.0 Internacional	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc/4.0/	*
dc.subject	Surface charge	es
dc.subject	Surface conductivity
dc.subject	Charge decay rate
dc.subject	Surface potential decay
dc.subject	Kelvin Probe Force Microscopy
dc.subject.other	CDU::6 - Ciencias aplicadas	es
dc.title	The surface charge decay: a theoretical and experimental analysis	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es