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Simulating realistic imaging conditions for in situ liquid microscopy.


ABSTRACT: In situ transmission electron microscopy enables the imaging of biological cells, macromolecular protein complexes, nanoparticles, and other systems in a near-native environment. In order to improve interpretation of image contrast features and also predict ideal imaging conditions ahead of time, new virtual electron microscopic techniques are needed. A technique for virtual fluid-stage high-angle annular dark-field scanning transmission electron microscopy with the multislice method is presented that enables the virtual imaging of model fluid-stage systems composed of millions of atoms. The virtual technique is exemplified by simulating images of PbS nanoparticles under different imaging conditions and the results agree with previous experimental findings. General insight is obtained on the influence of the effects of fluid path length, membrane thickness, nanoparticle position, defocus and other microscope parameters on attainable image quality.

SUBMITTER: Welch DA 

PROVIDER: S-EPMC3808501 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature

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Simulating realistic imaging conditions for in situ liquid microscopy.

Welch David A DA   Faller Roland R   Evans James E JE   Browning Nigel D ND  

Ultramicroscopy 20130527


In situ transmission electron microscopy enables the imaging of biological cells, macromolecular protein complexes, nanoparticles, and other systems in a near-native environment. In order to improve interpretation of image contrast features and also predict ideal imaging conditions ahead of time, new virtual electron microscopic techniques are needed. A technique for virtual fluid-stage high-angle annular dark-field scanning transmission electron microscopy with the multislice method is presente  ...[more]

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