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Atomic Resolution Defocused Electron Ptychography at Low Dose with a Fast, Direct Electron Detector.

ABSTRACT: Electron ptychography has recently attracted considerable interest for high resolution phase-sensitive imaging. However, to date studies have been mainly limited to radiation resistant samples as the electron dose required to record a ptychographic dataset is too high for use with beam-sensitive materials. Here we report defocused electron ptychography using a fast, direct-counting detector to reconstruct the transmission function, which is in turn related to the electrostatic potential of a two-dimensional material at atomic resolution under various low dose conditions.

SUBMITTER: Song J

PROVIDER: S-EPMC6408533 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Atomic Resolution Defocused Electron Ptychography at Low Dose with a Fast, Direct Electron Detector.

Song Jiamei J Allen Christopher S CS Gao Si S Huang Chen C Sawada Hidetaka H Pan Xiaoqing X Warner Jamie J Wang Peng P Kirkland Angus I AI

Scientific reports 20190308 1

Electron ptychography has recently attracted considerable interest for high resolution phase-sensitive imaging. However, to date studies have been mainly limited to radiation resistant samples as the electron dose required to record a ptychographic dataset is too high for use with beam-sensitive materials. Here we report defocused electron ptychography using a fast, direct-counting detector to reconstruct the transmission function, which is in turn related to the electrostatic potential of a two ...[more]

PMID: 30850641

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