Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Dec 16;6(51):eabc4904. doi: 10.1126/sciadv.abc4904

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

PMC Copyright notice

Fig. 1 — (A) Ptychographic scattering contrast image of a linear test pattern with 3-nm smallest features. The inset image is 1 μm wide. (B) FC and PSD analysis of the reconstructed image, averaged by horizontal line. The FC shows high correlation to a full-period resolution of 6 nm (reconstructed pixel size of 3 nm), while the PSD shows a roll-off at 8-nm full-period resolution. (C) Ptychographic optical density of a collection of Fe₃O₄ nanoparticles. The top half image uses a 5-ms x-ray exposure time, while the bottom half uses 50-ms exposure. Scale bar, 1 μm; pixel size, 3 nm. (D) FC analysis of the two exposure times, which indicate full-period spatial resolutions of 18 and 7.6 nm for the 5- and 50-ms exposure times, respectively.