Direct observation of nanowire growth and decomposition

dc.contributorAalto Universityen
dc.contributor.authorRackauskas, Simas
dc.contributor.authorShandakov, Sergey D.
dc.contributor.authorJiang, Hua
dc.contributor.authorWagner, Jakob B.
dc.contributor.authorNasibulin, Albert G.
dc.contributor.departmentDepartment of Applied Physics
dc.contributor.departmentKemerovo State University
dc.contributor.departmentTechnical University of Denmark
dc.description.abstractFundamental concepts of the crystal formation suggest that the growth and decomposition are determined by simultaneous embedding and removal of the atoms. Apparently, by changing the crystal formation conditions one can switch the regimes from the growth to decomposition. To the best of our knowledge, so far this has been only postulated, but never observed at the atomic level. By means of in situ environmental transmission electron microscopy we monitored and examined the atomic layer transformation at the conditions of the crystal growth and its decomposition using CuO nanowires selected as a model object. The atomic layer growth/decomposition was studied by varying an O2 partial pressure. Three distinct regimes of the atomic layer evolution were experimentally observed: growth, transition and decomposition. The transition regime, at which atomic layer growth/decomposition switch takes place, is characterised by random nucleation of the atomic layers on the growing {111} surface. The decomposition starts onthe side of the nanowire by removing the atomic layers without altering the overall crystal structure, which besides the fundamental importance offers new possibilities for the nanowire manipulation. Understanding of the crystal growth kinetics and nucleation at the atomic level is essential for the precise control of 1D crystal formation.en
dc.description.versionPeer revieweden
dc.identifier.citationRackauskas , S , Shandakov , S D , Jiang , H , Wagner , J B & Nasibulin , A G 2017 , ' Direct observation of nanowire growth and decomposition ' , Scientific Reports , vol. 7 , no. 1 , 12310 , pp. 1-6 .
dc.identifier.otherPURE UUID: fd138c0d-4d59-4482-945a-7d4076556ac7
dc.identifier.otherPURE ITEMURL:
dc.identifier.otherPURE LINK:
dc.identifier.otherPURE FILEURL:
dc.relation.ispartofseriesScientific Reportsen
dc.relation.ispartofseriesVolume 7, issue 1en
dc.titleDirect observation of nanowire growth and decompositionen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi