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Seeing structures and measuring properties with transmission electron microscopy images: A simple combination to study size effects in nanoparticle systems

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6 Author(s)
Donnadieu, Patricia ; SIMAP, INP Grenoble-CNRS-UJF, Domaine Universitaire, BP 75, 38402 Saint Martin d’Hères Cedex, France ; Lazar, Sorin ; Botton, Gianluigi A. ; Pignot-Paintrand, Isabelle
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We report on a method to measure the mean inner potential (V0) using transmission electron microscopy. It is based on phase retrieval from a focus series and has allowed to measure V0 as a function of the size for a system of gold nanoparticles. It comes out that V0 increases for particles below 2 nm. The focus series being carried out in conditions close to the high-resolution ones, structural information can be directly obtained. The high-resolution images have revealed that significant structural change occurs below the 2 nm size, which should be related to the V0 increase.

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Applied Physics Letters  (Volume:94 ,  Issue: 26 )