A new method for mapping the three-dimensional atomic distribution within nanoparticles by atom probe tomography (APT)

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dc.contributor.authorKim, Se-Hoko
dc.contributor.authorKang, Phil Woongko
dc.contributor.authorPark, O Okko
dc.contributor.authorSeol, Jae-Bokko
dc.contributor.authorAhn, Jae-Pyoungko
dc.contributor.authorLee, Ji Yeongko
dc.contributor.authorChoi, Pyuck-Pako
dc.date.accessioned2018-06-16T07:36:25Z-
dc.date.available2018-06-16T07:36:25Z-
dc.date.created2018-04-17-
dc.date.created2018-04-17-
dc.date.created2018-04-17-
dc.date.created2018-04-17-
dc.date.issued2018-07-
dc.identifier.citationULTRAMICROSCOPY, v.190, pp.30 - 38-
dc.identifier.issn0304-3991-
dc.identifier.urihttp://hdl.handle.net/10203/242522-
dc.description.abstractWe present a new method of preparing needle-shaped specimens for atom probe tomography from freestanding Pd and C-supported Pt nanoparticles. The method consists of two steps, namely electrophoresis of nanoparticles on a flat Cu substrate followed by electrodeposition of a Ni film acting as an embedding matrix for the nanoparticles. Atom probe specimen preparation can be subsequently carried out by means of focused-ion-beam milling. Using this approach, we have been able to perform correlative atom probe tomography and transmission electron microscopy analyses on both nanoparticle systems. Reliable mass spectra and three-dimensional atom maps could be obtained for Pd nanoparticle specimens. In contrast, atom probe samples prepared from C- supported Pt nanoparticles showed uneven field evaporation and hence artifacts in the reconstructed atom maps. Our developed method is a viable means of mapping the three-dimensional atomic distribution within nanoparticles and is expected to contribute to an improved understanding of the structure-composition-property relationships of various nanoparticle systems. (C) 2018 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.titleA new method for mapping the three-dimensional atomic distribution within nanoparticles by atom probe tomography (APT)-
dc.typeArticle-
dc.identifier.wosid000432868800004-
dc.identifier.scopusid2-s2.0-85045539853-
dc.type.rimsART-
dc.citation.volume190-
dc.citation.beginningpage30-
dc.citation.endingpage38-
dc.citation.publicationnameULTRAMICROSCOPY-
dc.identifier.doi10.1016/j.ultramic.2018.04.005-
dc.contributor.localauthorPark, O Ok-
dc.contributor.localauthorChoi, Pyuck-Pa-
dc.contributor.nonIdAuthorKim, Se-Ho-
dc.contributor.nonIdAuthorSeol, Jae-Bok-
dc.contributor.nonIdAuthorAhn, Jae-Pyoung-
dc.contributor.nonIdAuthorLee, Ji Yeong-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorAtom probe tomography-
dc.subject.keywordAuthorElectrophoresis-
dc.subject.keywordAuthorElectroplating-
dc.subject.keywordAuthorNanoparticles-
dc.subject.keywordPlusOXIDE NANOPARTICLES-
dc.subject.keywordPlusUNDERPOTENTIAL DEPOSITION-
dc.subject.keywordPlusPALLADIUM NANOPARTICLES-
dc.subject.keywordPlusCATALYTIC-PROPERTIES-
dc.subject.keywordPlusMETAL NANOPARTICLES-
dc.subject.keywordPlusLOCAL MAGNIFICATION-
dc.subject.keywordPlusDOPANT DISTRIBUTION-
dc.subject.keywordPlusPD NANOCRYSTALS-
dc.subject.keywordPlusLATTICE-STRAIN-
dc.subject.keywordPlusDRUG-DELIVERY-
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