Details

Autor(en) / Beteiligte

• Park, Jungwon
• Elmlund, Hans
• Ercius, Peter
• Yuk, Jong Min
• Limmer, David T.
• Chen, Qian
• Kim, Kwanpyo
• Han, Sang Hoon
• Weitz, David A.
• Zettl, A.
• Alivisatos, A. Paul

Titel

3D structure of individual nanocrystals in solution by electron microscopy

Ist Teil von

• Science (American Association for the Advancement of Science), 2015-07, Vol.349 (6245), p.290-295

Ort / Verlag

Washington: American Association for the Advancement of Science

Erscheinungsjahr

2015

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• Knowledge about the synthesis, growth mechanisms, and physical properties of colloidal nanoparticles has been limited by technical impediments. We introduce a method for determining three-dimensional (3D) structures of individual nanoparticles in solution. We combine a graphene liquid cell, high-resolution transmission electron microscopy, a direct electron detector, and an algorithm for single-particle 3D reconstruction originally developed for analysis of biological molecules. This method yielded two 3D structures of individual platinum nanocrystals at near-atomic resolution. Because our method derives the 3D structure from images of individual nanoparticles rotating freely in solution, it enables the analysis of heterogeneous populations of potentially unordered nanoparticles that are synthesized in solution, thereby providing a means to understand the structure and stability of defects at the nanoscale.