Title

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

Authors

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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