Nanoscale characterization of gold nanoparticles created by in situ reduction at a polymeric surface

    Authors

    A. Dutta; C. J. Clukay; C. N. Grabill; D. J. Freppon; A. Bhattacharya; S. M. Kuebler;H. Heinrich

    Comments

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    Abbreviated Journal Title

    J. Microsc..

    Keywords

    Gold; HAADF-STEM; nanoparticles; polymer; SU-8; TEM; TRANSMISSION ELECTRON-MICROSCOPY; MONOLAYER-PROTECTED CLUSTERS; SIZE; STEM; MICROSTRUCTURES; SPECIMEN; SU-8; TEM; Microscopy

    Abstract

    Transmission Electron Microscopy is used as a quantitative method to measure the shapes, sizes and volumes of gold nanoparticles created at a polymeric surface by three different in situ synthesis methods. The atomic number contrast (Z-contrast) imaging technique reveals nanoparticles which are formed on the surface of the polymer. However, with certain reducing agents, the gold nanoparticles are additionally found up to 20 nm below the polymer surface. In addition, plan-view high-angle annular dark-field scanning transmission electron microscopy images were statistically analyzed on one sample to measure the volume, height and effective diameter of the gold nanoparticles and their size distributions. Depth analysis from high-angle annular dark-field scanning transmission electron microscopy micrographs also gives information on the dominant shape of the nanoparticles.

    Journal Title

    Journal of Microscopy

    Volume

    251

    Issue/Number

    1

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    27

    Last Page

    34

    WOS Identifier

    WOS:000320170900005

    ISSN

    0022-2720

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