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    Unprecedented Surface Plasmon Modes in Monoclinic MoO2 Nanostructures

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    Name:
    adma201908392 PROOF.pdf
    Size:
    3.296Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2021-03-23
    Download
    Type
    Article
    Authors
    Zhu, Yun-Pei
    El Demellawi, Jehad K. cc
    Yin, Jun cc
    Lopatin, Sergei
    Lei, Yongjiu cc
    Liu, Zhixiong
    Miao, Xiaohe
    Mohammed, Omar F. cc
    Alshareef, Husam N. cc
    KAUST Department
    Chemical Science Program
    Electron Microscopy
    Functional Nanomaterials and Devices Research Group
    KAUST Solar Center (KSC)
    Material Science and Engineering
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
    Date
    2020-03-23
    Online Publication Date
    2020-03-23
    Print Publication Date
    2020-05
    Embargo End Date
    2021-03-23
    Submitted Date
    2019-12-22
    Permanent link to this record
    http://hdl.handle.net/10754/662289
    
    Metadata
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    Abstract
    Developing stable plasmonic materials featuring earth-abundant compositions with continuous band structures, similar to those of typical metals, has received special research interest. Owing to their metal-like behavior, monoclinic MoO2 nanostructures have been found to support stable and intense surface plasmon (SP) resonances. However, no progress has been made on their energy and spatial distributions over individual nanostructures, nor the origin of their possibly existing specific SP modes. Here, various MoO2 nanostructures are designed via polydopamine chemistry and managed to visualize multiple longitudinal and transversal SP modes supported by the monoclinic MoO2 , along with intrinsic interband transitions, using scanning transmission electron microscopy coupled with ultrahigh-resolution electron energy loss spectroscopy. The identified geometry-dependent SP energies are tuned by either controlling the shape and thickness of MoO2 nanostructures through their well-designed chemical synthesis, or by altering their length using a developed electron-beam patterning technique. Theoretical calculations reveal that the strong plasmonic behavior of the monoclinic MoO2 is associated with the abundant delocalized electrons in the Mo d orbitals. This work not only provides a significant improvement in imaging and tailoring SPs of nonconventional metallic nanostructures, but also highlights the potential of MoO2 nanostructures for micro-nano optical and optoelectronic applications.
    Citation
    Zhu, Y.-P., El-Demellawi, J. K., Yin, J., Lopatin, S., Lei, Y., Liu, Z., … Alshareef, H. N. (2020). Unprecedented Surface Plasmon Modes in Monoclinic MoO2 Nanostructures. Advanced Materials, 1908392. doi:10.1002/adma.201908392
    Sponsors
    Y.-P.Z. and J.K.E.-D. contributed equally to this work. The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    Wiley
    Journal
    Advanced Materials
    DOI
    10.1002/adma.201908392
    Additional Links
    http://doi.wiley.com/10.1002/adma.201908392
    ae974a485f413a2113503eed53cd6c53
    10.1002/adma.201908392
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; Material Science and Engineering Program; KAUST Solar Center (KSC)

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