Strain tolerance of two-dimensional crystal growth on curved surfaces

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dc.citation.articleNumbereaav4028en_US
dc.citation.issueNumber5en_US
dc.citation.journalTitleScience Advancesen_US
dc.citation.volumeNumber5en_US
dc.contributor.authorWang, Kaien_US
dc.contributor.authorPuretzky, Alexander A.en_US
dc.contributor.authorHu, Zhilien_US
dc.contributor.authorSrijanto, Bernadeta R.en_US
dc.contributor.authorLi, Xufanen_US
dc.contributor.authorGupta, Nitanten_US
dc.contributor.authorYu, Henryen_US
dc.contributor.authorTian, Mengkunen_US
dc.contributor.authorMahjouri-Samani, Masouden_US
dc.contributor.authorGao, Xiangen_US
dc.contributor.authorOyedele, Akinolaen_US
dc.contributor.authorRouleau, Christopher M.en_US
dc.contributor.authorEres, Gyulaen_US
dc.contributor.authorYakobson, Boris I.en_US
dc.contributor.authorYoon, Minaen_US
dc.contributor.authorXiao, Kaien_US
dc.contributor.authorGeohegan, David B.en_US
dc.date.accessioned2019-11-22T16:19:54Zen_US
dc.date.available2019-11-22T16:19:54Zen_US
dc.date.issued2019en_US
dc.description.abstractTwo-dimensional (2D) crystal growth over substrate features is fundamentally guided by the Gauss-Bonnet theorem, which mandates that rigid, planar crystals cannot conform to surfaces with nonzero Gaussian curvature. Here, we reveal how topographic curvature of lithographically designed substrate features govern the strain and growth dynamics of triangular WS2 monolayer single crystals. Single crystals grow conformally without strain over deep trenches and other features with zero Gaussian curvature; however, features with nonzero Gaussian curvature can easily impart sufficient strain to initiate grain boundaries and fractured growth in different directions. Within a strain-tolerant regime, however, triangular single crystals can accommodate considerable (<1.1%) localized strain exerted by surface features that shift the bandgap up to 150 meV. Within this regime, the crystal growth accelerates in specific directions, which we describe using a growth model. These results present a previously unexplored strategy to strain-engineer the growth directions and optoelectronic properties of 2D crystals.en_US
dc.identifier.citationWang, Kai, Puretzky, Alexander A., Hu, Zhili, et al.. "Strain tolerance of two-dimensional crystal growth on curved surfaces." <i>Science Advances,</i> 5, no. 5 (2019) AAAS: https://doi.org/10.1126/sciadv.aav4028.en_US
dc.identifier.digitaleaav4028.fullen_US
dc.identifier.doihttps://doi.org/10.1126/sciadv.aav4028en_US
dc.identifier.urihttps://hdl.handle.net/1911/107712en_US
dc.language.isoengen_US
dc.publisherAAASen_US
dc.rightsDistributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/en_US
dc.titleStrain tolerance of two-dimensional crystal growth on curved surfacesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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