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dc.contributor.authorZheng, X
dc.contributor.authorJia, B
dc.contributor.authorLin, H
dc.contributor.authorQiu, L
dc.contributor.authorLi, D
dc.contributor.authorGu, M
dc.date.accessioned2020-12-17T03:29:32Z
dc.date.available2020-12-17T03:29:32Z
dc.date.issued2015-09-01
dc.identifierpii: ncomms9433
dc.identifier.citationZheng, X., Jia, B., Lin, H., Qiu, L., Li, D. & Gu, M. (2015). Highly efficient and ultra-broadband graphene oxide ultrathin lenses with three-dimensional subwavelength focusing. NATURE COMMUNICATIONS, 6 (1), https://doi.org/10.1038/ncomms9433.
dc.identifier.issn2041-1723
dc.identifier.urihttp://hdl.handle.net/11343/254909
dc.description.abstractNanometric flat lenses with three-dimensional subwavelength focusing are indispensable in miniaturized optical systems. However, they are fundamentally challenging to achieve because of the difficulties in accurately controlling the optical wavefront by a film with nanometric thickness. Based on the unique and giant refractive index and absorption modulations of the sprayable graphene oxide thin film during its laser reduction process, we demonstrate a graphene oxide ultrathin (∼200 nm) flat lens that shows far-field three-dimensional subwavelength focusing (λ(3)/5) with an absolute focusing efficiency of >32% for a broad wavelength range from 400 to 1,500 nm. Our flexible graphene oxide lenses are mechanically robust and maintain excellent focusing properties under high stress. The simple and scalable fabrication approach enables wide potential applications in on-chip nanophotonics. The wavefront shaping concept opens up new avenues for easily accessible, highly precise and efficient optical beam manipulations with a flexible and integratable planar graphene oxide ultrathin film.
dc.languageEnglish
dc.publisherNATURE PUBLISHING GROUP
dc.titleHighly efficient and ultra-broadband graphene oxide ultrathin lenses with three-dimensional subwavelength focusing
dc.typeJournal Article
dc.identifier.doi10.1038/ncomms9433
melbourne.affiliation.departmentChemical and Biomolecular Engineering
melbourne.source.titleNature Communications
melbourne.source.volume6
melbourne.source.issue1
dc.rights.licenseCC BY
melbourne.elementsid1225508
melbourne.contributor.authorLi, Dan
dc.identifier.eissn2041-1723
melbourne.accessrightsOpen Access


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