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    Dielectric properties of ligand-modified gold nanoparticles/SU-8 photopolymer based nanocomposites

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    Type
    Article
    Authors
    Toor, Anju cc
    So, Hongyun cc
    Pisano, Albert P.
    KAUST Grant Number
    25478
    Date
    2017-04-15
    Online Publication Date
    2017-04-15
    Print Publication Date
    2017-08
    Permanent link to this record
    http://hdl.handle.net/10754/623535
    
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    Abstract
    This article reports the enhanced dielectric properties of a photodefinable nanocomposite material containing sub–10 nm coated metal nanoparticles (NPs). The surface morphology of the synthesized dodecanethiol-functionalized gold NPs was characterized using the transmission electron microscopy (TEM). We investigated the particle agglomeration and dispersion during the various stages of the nanocomposite synthesis using TEM. Physical properties such as dielectric permittivity and dielectric loss were measured experimentally. The dependence of dielectric permittivity and loss tangent on particle concentration and frequency was studied. Nanocomposite films showed an approximately three times enhancement in average dielectric constant over the polymer base value and an average dielectric loss of 0.09 at 1 kHz, at a filler loading of 10% w/w.
    Citation
    Toor A, So H, Pisano AP (2017) Dielectric properties of ligand-modified gold nanoparticle/SU-8 photopolymer based nanocomposites. Applied Surface Science 414: 373–379. Available: http://dx.doi.org/10.1016/j.apsusc.2017.04.096.
    Sponsors
    This work was supported by King Abdullah University of Science and Technology (KAUST) under award number 25478. The authors would like to thank David Litt for helping in the gold nanoparticle synthesis and thank the staff of Biomolecular Nanotechnology Center (BNC) at the University of California, Berkeley where the material synthesis and characterization was done.
    Publisher
    Elsevier BV
    Journal
    Applied Surface Science
    DOI
    10.1016/j.apsusc.2017.04.096
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.apsusc.2017.04.096
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