In situ electron tomography for the thermally activated solid reaction of anaerobic nanoparticles

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dc.contributor.authorIhara, Shiroen
dc.contributor.authorYoshinaga, Mizumoen
dc.contributor.authorMiyazaki, Hiroyaen
dc.contributor.authorWada, Kotaen
dc.contributor.authorHata, Satoshien
dc.contributor.authorSaito, Hikaruen
dc.contributor.authorMurayama, Mitsuhiroen
dc.date.accessioned2023-06-21T15:12:48Zen
dc.date.available2023-06-21T15:12:48Zen
dc.date.issued2023-06en
dc.description.abstractThe nanoscale characterization of thermally activated solid reactions plays a pivotal role in products manufactured by nanotechnology. Recently, in situ observation in transmission electron microscopy combined with electron tomography, namely four-dimensional observation for heat treatment of nanomaterials, has attracted great interest. However, because most nanomaterials are highly reactive, i.e., oxidation during transfer and electron beam irradiation would likely cause fatal artefacts; it is challenging to perform the artifact-free four-dimensional observation. Herein, we demonstrate our development of a novel in situ three-dimensional electron microscopy technique for thermally activated solid-state reaction processes in nanoparticles (NPs). The sintering behaviour of Cu NPs was successfully visualized and analyzed in four-dimensional space-time. An advanced image processing protocol and a newly designed state-of-the-art MEMS-based heating holder enable the implementation of considerably low electron dose imaging and prevent air exposure, which is of central importance in this type of observation. The total amount of electron dose for a single set of tilt-series images was reduced to 250 e(-) nm(-2), which is the lowest level for inorganic materials electron tomography experiments. This study evaluated the sintering behaviour of Cu NPs in terms of variations in neck growth and particle distance. A negative correlation between the two parameters is shown, except for the particle pair bound by neighbouring NPs. The nanoscale characteristic sintering behavior of neck growth was also captured in this study.en
dc.description.notesThis study was supported by JSPS KAKENHI Grant Number (JP18H05479, JP20H02426, JP20K21093, JP21K20491, JP 22K14466), Iketani Science and Technology Foundation, CREST Nanomechanics (JPMJCR1994), Japan Science and Technology Agency (JST) CREST (JPMJCR18J4), and Five-Star Alliance. This study was partly supported by Nano-scale Characterization and Fabrication Laboratory (NCFL), Institute for Critical Technology and Applied Science (ICTAS), Virginia Tech and used shared facilities at the Virginia Tech National Center for Earth and Environmental Nanotechnology Infrastructure (NanoEarth), a member of the National Nanotechnology Coordinated Infrastructure (NNCI), supported by NSF (ECCS 2025151).en
dc.description.sponsorshipJSPS KAKENHI [JP18H05479, JP20H02426, JP20K21093, JP21K20491, JP 22K14466]; Iketani Science and Technology Foundation; CREST Nanomechanics [JPMJCR1994]; Japan Science and Technology Agency (JST) CREST [JPMJCR18J4]; Five-Star Alliance; Nano-scale Characterization and Fabrication Laboratory (NCFL), Institute for Critical Technology and Applied Science (ICTAS); Virginia Tech; NSF [ECCS 2025151]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1039/d3nr00992ken
dc.identifier.eissn2040-3372en
dc.identifier.issn2040-3364en
dc.identifier.pmid37264793en
dc.identifier.urihttp://hdl.handle.net/10919/115470en
dc.language.isoenen
dc.publisherRoyal Society Chemistryen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectgrain-growthen
dc.subjectmicroscopyen
dc.subjectdensificationen
dc.subjectdiffusionen
dc.titleIn situ electron tomography for the thermally activated solid reaction of anaerobic nanoparticlesen
dc.title.serialNanoscaleen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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