Show simple item record

dc.creatorRadmilović, Vuk
dc.creatorGoebelt, Manuela
dc.creatorOphus, Colin
dc.creatorChristiansen, Silke
dc.creatorSpiecker, Erdmann
dc.creatorRadmilović, Velimir R.
dc.date.accessioned2021-03-10T13:27:02Z
dc.date.available2021-03-10T13:27:02Z
dc.date.issued2017
dc.identifier.issn0957-4484
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/3633
dc.description.abstractThis article focuses on the microscopic mechanism of thermally induced nanoweld formation between silver nanowires (AgNWs) which is a key process for improving electrical conductivity in NW networks employed for transparent electrodes. Focused ion beam sectioning and transmission electron microscopy were applied in order to elucidate the atomic structure of a welded NW including measurement of the wetting contact angle and characterization of defect structure with atomic accuracy, which provides fundamental information on the welding mechanism. Crystal lattice strain, obtained by direct evaluation of atomic column displacements in high resolution scanning transmission electron microscopy images, was shown to be non-uniform among the five twin segments of the AgNW pentagonal structure. It was found that the pentagonal cross-sectional morphology of AgNWs has a dominant effect on the formation of nanowelds by controlling initial wetting as well as diffusion of Ag atoms between the NWs. Due to complete solid-state wetting, at an angle of similar to 4.8 degrees, the welding process starts with homoepitaxial nucleation of an initial Ag layer on (100) surface facets, considered to have an infinitely large radius of curvature. However, the strong driving force for this process due to the Gibbs-Thomson effect, requires the NW contact to occur through the corner of the pentagonal cross-section of the second NW providing a small radius of curvature. After the initial layer is formed, the welded zone continues to grow and extends out epitaxially to the neighboring twin segments.en
dc.publisherIOP Publishing Ltd, Bristol
dc.relation'Start Up For Science' program
dc.relationSerbian Academy of Sciences and Arts [F-141]
dc.relationDFG within the Research Training GroupGerman Research Foundation (DFG) [GRK1896]
dc.relationOffice of Science, Office of Basic Energy Sciences, of the U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-AC02-05CH11231]
dc.relationCluster of Excellence 'Engineering of Advanced Materials (EAM)' at the University of Erlangen-Nuremberg, Germany [EXC315]
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172054/RS//
dc.rightsrestrictedAccess
dc.sourceNanotechnology
dc.subjectsilver nanowires (AgNWs)en
dc.subjectaluminum-doped zinc oxide (AZO)en
dc.subjectnanoweld formationen
dc.subjectsolid-state wettingen
dc.subjectnanowire sinteringen
dc.titleLow temperature solid-state wetting and formation of nanowelds in silver nanowiresen
dc.typearticle
dc.rights.licenseARR
dc.citation.issue38
dc.citation.other28(38): -
dc.citation.rankM21
dc.citation.volume28
dc.identifier.doi10.1088/1361-6528/aa7eb8
dc.identifier.pmid28691926
dc.identifier.rcubconv_5425
dc.identifier.scopus2-s2.0-85029081121
dc.identifier.wos000413181300001
dc.type.versionpublishedVersion


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record