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Multimode Electron Tomography as a Tool to Characterize the Internal Structure and Morphology of Gold Nanoparticles.

ABSTRACT: Three dimensional (3D) characterization of structural defects in nanoparticles by transmission electron microscopy is far from straightforward. We propose the use of a dose-efficient approach, so-called multimode tomography, during which tilt series of low and high angle annular dark field scanning transmission electron microscopy projection images are acquired simultaneously. In this manner, not only reliable information can be obtained concerning the shape of the nanoparticles, but also the twin planes can be clearly visualized in 3D. As an example, we demonstrate the application of this approach to identify the position of the seeds with respect to the twinning planes in anisotropic gold nanoparticles synthesized using a seed mediated growth approach.

SUBMITTER: Winckelmans N

PROVIDER: S-EPMC6028896 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Multimode Electron Tomography as a Tool to Characterize the Internal Structure and Morphology of Gold Nanoparticles.

Winckelmans Naomi N Altantzis Thomas T Grzelczak Marek M Sánchez-Iglesias Ana A Liz-Marzán Luis M LM Bals Sara S

The journal of physical chemistry. C, Nanomaterials and interfaces 20180116 25

Three dimensional (3D) characterization of structural defects in nanoparticles by transmission electron microscopy is far from straightforward. We propose the use of a dose-efficient approach, so-called multimode tomography, during which tilt series of low and high angle annular dark field scanning transmission electron microscopy projection images are acquired simultaneously. In this manner, not only reliable information can be obtained concerning the shape of the nanoparticles, but also the tw ...[more]

PMID: 29983841

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