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Kim, Kwanpyo
Experimental Nanoscale Physics Lab
Research Interests
  • Two-dimensional (2D) materials, graphene, NEMS, electron microscopy

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3D structure of individual nanocrystals in solution by electron microscopy

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Title
3D structure of individual nanocrystals in solution by electron microscopy
Author
Park, JungwonElmlund, HansErcius, PeterYuk, Jong MinLimmer, David T.Chen, QianKim, KwanpyoHan, Sang HoonWeitz, David A.Zettl, AlexAlivisatos, A. Paul
Issue Date
2015-07
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Citation
SCIENCE, v.349, no.6245, pp.290 - 295
Abstract
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.
URI
https://scholarworks.unist.ac.kr/handle/201301/13419
URL
http://www.sciencemag.org/content/349/6245/290.abstract
DOI
10.1126/science.aab1343
ISSN
0036-8075
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PHY_Journal Papers
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