dc.contributor.authorNiu, Kaiyang
dc.contributor.authorFrolov, Timofey
dc.contributor.authorXin, Huolin L.
dc.contributor.authorWang, Junling
dc.contributor.authorAsta, Mark
dc.contributor.authorZheng, Haimei
dc.identifier.citationNiu, K., Frolov, T., Xin, H. L., Wang, J., Asta, M., & Zheng, H. (2015). Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle. Proceedings of the National Academy of Sciences, 112(42), 12928-12932.en_US
dc.description.abstractIron hydroxide is found in a wide range of contexts ranging from biominerals to steel corrosion, and it can transform to anhydrous oxide via releasing O2 gas and H2O. However, it is not well understood how gases transport through a crystal lattice. Here, we present in situ observation of the nucleation and migration of gas bubbles in iron (hydr)oxide using transmission electron microscopy. We create Pb–FeOOH model core–shell nanoparticles in a liquid cell. Under electron irradiation, iron hydroxide transforms to iron oxide, during which bubbles are generated, and they migrate through the shell to the nanoparticle surface. Geometric phase analysis of the shell lattice shows an inhomogeneous stain field at the bubbles. Our modeling suggests that the elastic interaction between the core and the bubble provides a driving force for bubble migration.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.format.extent5 p.en_US
dc.relation.ispartofseriesProceedings of the National Academy of Sciences of the United States of Americaen_US
dc.rights© 2015 The Authors (Published by National Academy of Sciences).en_US
dc.subjectLiquid cell
dc.subjectCore–shell nanoparticle
dc.titleBubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticleen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Materials Science and Engineeringen_US

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