Advances and challenges in cryo ptychography at the Advanced Photon Source

作     者：J Deng D J Vine S Chen Y S G Nashed Q Jin T Peterka S Vogt C Jacobsen 

作者机构：Applied Physics Northwestern University Evanston IL 60208 USA. X-ray Science Division Advanced Photon Source Argonne National Laboratory Argonne IL 60439 USA. Mathematics and Computing Science Division Argonne National Laboratory Argonne IL 60439 USA. Department of Physics & Astronomy Northwestern University Evanston IL 60208 USA. X-ray Science Division Advanced Photon Source Argonne National Laboratory Argonne IL 60439 USA Department of Physics & Astronomy and Chemistry of Life Processes Institute Northwestern University Evanston IL 60208 USA. 

出 版 物：《AIP conference proceedings》 (美国物理学会会议录)

年 卷 期：2016年第1696卷第1期

页      面：020030页

学科分类：07[理学] 0702[理学-物理学] 

主　　题：3D ptychography cryogenic sample fly scan parallel computation ptychography 

摘      要：Ptychography has emerged as a nondestructive tool to quantitatively study extended samples at a high spatial resolution. In this manuscript, we report on recent developments from our team. We have combined cryo ptychography and fluorescence microscopy to provide simultaneous views of ultrastructure and elemental composition, we have developed multi-GPU parallel computation to speed up ptychographic reconstructions, and we have implemented fly-scan ptychography to allow for faster data acquisition. We conclude with a discussion of future challenges in high-resolution 3D ptychography.