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Article: Atomic-scale ion transistor with ultrahigh diffusivity

TitleAtomic-scale ion transistor with ultrahigh diffusivity
Authors
Issue Date2021
PublisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
Citation
Science, 2021, v. 372 n. 6541, p. 501-503 How to Cite?
AbstractBiological ion channels rapidly and selectively gate ion transport through atomic-scale filters to maintain vital life functions. We report an atomic-scale ion transistor exhibiting ultrafast and highly selective ion transport controlled by electrical gating in graphene channels around 3 angstroms in height, made from a single flake of reduced graphene oxide. The ion diffusion coefficient reaches two orders of magnitude higher than the coefficient in bulk water. Atomic-scale ion transport shows a threshold behavior due to the critical energy barrier for hydrated ion insertion. Our in situ optical measurements suggest that ultrafast ion transport likely originates from highly dense packing of ions and their concerted movement inside the graphene channels.
Persistent Identifierhttp://hdl.handle.net/10722/308099
ISSN
2023 Impact Factor: 44.7
2023 SCImago Journal Rankings: 11.902
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXue, Y-
dc.contributor.authorXia, Y-
dc.contributor.authorYang, S-
dc.contributor.authorAlsaid, Y-
dc.contributor.authorFong, KY-
dc.contributor.authorWang, Y-
dc.contributor.authorZhang, X-
dc.date.accessioned2021-11-12T13:42:30Z-
dc.date.available2021-11-12T13:42:30Z-
dc.date.issued2021-
dc.identifier.citationScience, 2021, v. 372 n. 6541, p. 501-503-
dc.identifier.issn0036-8075-
dc.identifier.urihttp://hdl.handle.net/10722/308099-
dc.description.abstractBiological ion channels rapidly and selectively gate ion transport through atomic-scale filters to maintain vital life functions. We report an atomic-scale ion transistor exhibiting ultrafast and highly selective ion transport controlled by electrical gating in graphene channels around 3 angstroms in height, made from a single flake of reduced graphene oxide. The ion diffusion coefficient reaches two orders of magnitude higher than the coefficient in bulk water. Atomic-scale ion transport shows a threshold behavior due to the critical energy barrier for hydrated ion insertion. Our in situ optical measurements suggest that ultrafast ion transport likely originates from highly dense packing of ions and their concerted movement inside the graphene channels.-
dc.languageeng-
dc.publisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org-
dc.relation.ispartofScience-
dc.rightsScience. Copyright © American Association for the Advancement of Science.-
dc.rightsThis is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in [Science Journal Title] on [Volume number and date], DOI: [insert DOI number].-
dc.titleAtomic-scale ion transistor with ultrahigh diffusivity-
dc.typeArticle-
dc.identifier.emailZhang, X: president@hku.hk-
dc.identifier.authorityZhang, X=rp02411-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1126/science.abb5144-
dc.identifier.pmid33926952-
dc.identifier.scopuseid_2-s2.0-85105126017-
dc.identifier.hkuros329930-
dc.identifier.volume372-
dc.identifier.issue6541-
dc.identifier.spage501-
dc.identifier.epage503-
dc.identifier.isiWOS:000645554100044-
dc.publisher.placeUnited States-

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