新しい3Dイメージングツールで、人工的に作られた自己組織化ナノ粒子格子を、これまでで最も高い解像度7nmで見ることができるようになりました。 New 3D imaging tool reveals engineered and self-assembled nanoparticle lattices with highest resolution yet—7nm—about 1/100,000 of the width of a human hair
2022-04-13 コロンビア大学
Researchers used x-ray tomography as a magnifying lens to see into the inner structure of nanomaterials. Credit: Oleg Gang/Columbia Engineering
＜関連情報＞
- https://www.engineering.columbia.edu/news/oleg-gang-3d-imaging-nanoparticles
- https://www.science.org/doi/10.1126/science.abk0463
ナノ粒子格子とマルチマテリアルフレームワークの3次元可視化 Three-dimensional visualization of nanoparticle lattices and multimaterial frameworks
AARON MICHELSON,BRIAN MINEVICH,HAMED EMAMY,XIAOJING HUANG,YONG S. CHU,HANFEI YAN AND OLEG GANG
Science Published:7 Apr 2022
DOI: 10.1126/science.abk0463
Abstract
Advances in nanoscale self-assembly have enabled the formation of complex nanoscale architectures. However, the development of self-assembly strategies toward bottom-up nanofabrication is impeded by challenges in revealing these structures volumetrically at the single-component level and with elemental sensitivity. Leveraging advances in nano-focused hard x-rays, DNA-programmable nanoparticle assembly, and nanoscale inorganic templating, we demonstrate nondestructive three-dimensional imaging of complexly organized nanoparticles and multimaterial frameworks. In a three-dimensional lattice with a size of 2 micrometers, we determined the positions of about 10,000 individual nanoparticles with 7-nanometer resolution, and identified arrangements of assembly motifs and a resulting multimaterial framework with elemental sensitivity. The real-space reconstruction permits direct three-dimensional imaging of lattices, which reveals their imperfections and interfaces and also clarifies the relationship between lattices and assembly motifs.
