We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Three-dimensional electron ptychography of organic–inorganic hybrid nanostructures.
- Authors
Ding, Zhiyuan; Gao, Si; Fang, Weina; Huang, Chen; Zhou, Liqi; Pei, Xudong; Liu, Xiaoguo; Pan, Xiaoqing; Fan, Chunhai; Kirkland, Angus I.; Wang, Peng
- Abstract
Three dimensional scaffolded DNA origami with inorganic nanoparticles has been used to create tailored multidimensional nanostructures. However, the image contrast of DNA is poorer than those of the heavy nanoparticles in conventional transmission electron microscopy at high defocus so that the biological and non-biological components in 3D scaffolds cannot be simultaneously resolved using tomography of samples in a native state. We demonstrate the use of electron ptychography to recover high contrast phase information from all components in a DNA origami scaffold without staining. We further quantitatively evaluate the enhancement of contrast in comparison with conventional transmission electron microscopy. In addition, We show that for ptychography post-reconstruction focusing simplifies the workflow and reduces electron dose and beam damage. The authors demonstrate electron ptychographic computed tomography by simultaneously recording high contrast data from both the organic- and inorganic components in a 3D DNA-origami framework hybrid nanostructure.
- Subjects
DNA folding; TRANSMISSION electron microscopy; NANOSTRUCTURES; ELECTRONS; COMPUTED tomography
- Publication
Nature Communications, 2022, Vol 13, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-022-32548-x