Cargando…
Nanoparticle Near-Surface Electric Field
Theoretical studies show that surface reconstruction in some crystals involves splitting the surface atomic layer into two—upper and lower—sublayers consisting of atoms with only positive or only negative effective electric charges, respectively. In a macroscopic crystal with an almost infinite surf...
Autor principal: | |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4735090/ https://www.ncbi.nlm.nih.gov/pubmed/26831686 http://dx.doi.org/10.1186/s11671-016-1258-3 |
_version_ | 1782413015078928384 |
---|---|
author | Chkhartishvili, Levan |
author_facet | Chkhartishvili, Levan |
author_sort | Chkhartishvili, Levan |
collection | PubMed |
description | Theoretical studies show that surface reconstruction in some crystals involves splitting the surface atomic layer into two—upper and lower—sublayers consisting of atoms with only positive or only negative effective electric charges, respectively. In a macroscopic crystal with an almost infinite surface, the electric field induced by such a surface-dipole is practically totally concentrated between the sublayers. However, when the material is powdered and its particles are of sufficiently small sizes, an electric field of a significant magnitude can be induced outside the sublayers as well. We have calculated the distribution of the electric field and its potential induced at the surface of a disc-shaped particle. The suggested novel nanoscale effect explains the increase in physical reactivity of nanopowders with decreasing particle sizes. |
format | Online Article Text |
id | pubmed-4735090 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-47350902016-02-12 Nanoparticle Near-Surface Electric Field Chkhartishvili, Levan Nanoscale Res Lett Nano Express Theoretical studies show that surface reconstruction in some crystals involves splitting the surface atomic layer into two—upper and lower—sublayers consisting of atoms with only positive or only negative effective electric charges, respectively. In a macroscopic crystal with an almost infinite surface, the electric field induced by such a surface-dipole is practically totally concentrated between the sublayers. However, when the material is powdered and its particles are of sufficiently small sizes, an electric field of a significant magnitude can be induced outside the sublayers as well. We have calculated the distribution of the electric field and its potential induced at the surface of a disc-shaped particle. The suggested novel nanoscale effect explains the increase in physical reactivity of nanopowders with decreasing particle sizes. Springer US 2016-02-01 /pmc/articles/PMC4735090/ /pubmed/26831686 http://dx.doi.org/10.1186/s11671-016-1258-3 Text en © Chkhartishvili. 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Nano Express Chkhartishvili, Levan Nanoparticle Near-Surface Electric Field |
title | Nanoparticle Near-Surface Electric Field |
title_full | Nanoparticle Near-Surface Electric Field |
title_fullStr | Nanoparticle Near-Surface Electric Field |
title_full_unstemmed | Nanoparticle Near-Surface Electric Field |
title_short | Nanoparticle Near-Surface Electric Field |
title_sort | nanoparticle near-surface electric field |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4735090/ https://www.ncbi.nlm.nih.gov/pubmed/26831686 http://dx.doi.org/10.1186/s11671-016-1258-3 |
work_keys_str_mv | AT chkhartishvililevan nanoparticlenearsurfaceelectricfield |