SINGLE: Atomic-resolution structure identification of nanocrystals by graphene liquid cell EM
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia.; Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Melbourne, Victoria, Australia.
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, South Korea.; School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, Seoul 08826, South Korea.
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, South Korea.; School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, Seoul 08826, South Korea.; Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 06978, South Korea.
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
Analysis of the three-dimensional (3D) structures of nanocrystals with solution-phase transmission electron microscopy is beginning to reveal their unique physiochemical properties. We developed a “one-particle Brownian 3D reconstruction method” based on imaging of ensembles of colloidal nanocrystals using graphene liquid cell electron microscopy. Projection images of differently rotated nanocrystals are acquired using a direct electron detector with high temporal (<2.5 ms) resolution and analyzed to obtain an ensemble of 3D reconstructions. Here, we introduce computational methods required for successful atomic-resolution 3D reconstruction: (i) tracking of the individual particles throughout the time series, (ii) subtraction of the interfering background of the graphene liquid cell, (iii) identification and rejection of low-quality images, and (iv) tailored strategies for 2D/3D alignment and averaging that differ from those used in biological cryo–electron microscopy. Our developments are made available through the open-source software package SINGLE.
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Institute for Basic Science; National Research Foundation of Korea (NRF); Ministry of Trade, Industry & Energy (MOTIE); Korea Semiconductor Research Consortium (KSRC); Samsung Science and Technology Foundation (SSTF); Australian Research Council (ARC); Australian National Health and Medical Research Council
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1763794
- Alternate ID(s):
- OSTI ID: 1769332
- Journal Information:
- Science Advances, Journal Name: Science Advances Journal Issue: 5 Vol. 7; ISSN 2375-2548
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English