Cryo-mediated exfoliation and fracturing of layered materials into 2D quantum dots

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dc.citation.articleNumbere1701500
dc.citation.issueNumber12
dc.citation.journalTitleScience Advances
dc.citation.volumeNumber3
dc.contributor.authorWang, Yan
dc.contributor.authorLiu, Yang
dc.contributor.authorZhang, Jianfang
dc.contributor.authorWu, Jingjie
dc.contributor.authorXu, Hui
dc.contributor.authorWen, Xiewen
dc.contributor.authorZhang, Xiang
dc.contributor.authorTiwary, Chandra Sekhar
dc.contributor.authorYang, Wei
dc.contributor.authorVajtai, Robert
dc.contributor.authorZhang, Yong
dc.contributor.authorChopra, Nitin
dc.contributor.authorOdeh, Ihab Nizar
dc.contributor.authorWu, Yucheng
dc.contributor.authorAjayan, Pulickel M.
dc.date.accessioned2018-06-27T12:34:33Z
dc.date.available2018-06-27T12:34:33Z
dc.date.issued2017
dc.description.abstractAtomically thin quantum dots from layered materials promise new science and applications, but their scalable synthesis and separation have been challenging. We demonstrate a universal approach for the preparation of quantum dots from a series of materials, such as graphite, MoS2, WS2, h-BN, TiS2, NbS2, Bi2Se3, MoTe2, Sb2Te3, etc., using a cryo-mediated liquid-phase exfoliation and fracturing process. The method relies on liquid nitrogen pretreatment of bulk layered materials before exfoliation and breakdown into atomically thin two-dimensional quantum dots of few-nanometer lateral dimensions, exhibiting size-confined optical properties. This process is efficient for a variety of common solvents with a wide range of surface tension parameters and eliminates the use of surfactants, resulting in pristine quantum dots without surfactant covering or chemical modification.
dc.identifier.citationWang, Yan, Liu, Yang, Zhang, Jianfang, et al.. "Cryo-mediated exfoliation and fracturing of layered materials into 2D quantum dots." <i>Science Advances,</i> 3, no. 12 (2017) AAAS: https://doi.org/10.1126/sciadv.1701500.
dc.identifier.digitale1701500.full
dc.identifier.doihttps://doi.org/10.1126/sciadv.1701500
dc.identifier.urihttps://hdl.handle.net/1911/102283
dc.language.isoeng
dc.publisherAAAS
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.titleCryo-mediated exfoliation and fracturing of layered materials into 2D quantum dots
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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