Topic
Contrast transfer function
About: Contrast transfer function is a research topic. Over the lifetime, 934 publications have been published within this topic receiving 26533 citations.
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TL;DR: A significant improvement of the linear contrast transfer can be demonstrated and this work might be useful to others in understanding the process of image formation in a Cc /Cs-corrected transmission electron microscope.
Abstract: For the transmission electron aberration-corrected microscope (TEAM) initiative of five U.S. Department of Energy laboratories in the United States, a correction system for the simultaneous compensation of the primary axial aberrations, the spherical aberration Cs, and the chromatic aberration Cc has been developed and successfully installed. The performance of the resulting Cc /Cs-corrected TEAM instrument has been investigated thoroughly. A significant improvement of the linear contrast transfer can be demonstrated. The information about the instrument one obtains using Young's fringe method is compared for uncorrected, Cs-corrected, and Cc /Cs-corrected instruments. The experimental results agree well with simulations. The conclusions might be useful to others in understanding the process of image formation in a Cc /Cs-corrected transmission electron microscope.
102 citations
TL;DR: The negative C S imaging (NCSI) technique as mentioned in this paper was proposed for high-resolution transmission electron microscopy of thin objects, where the spherical aberration C S can be tuned to negative values, resulting in a novel imaging technique.
101 citations
TL;DR: Aberration-corrected transmission electron microscopy allows us to image the structure of matter at genuine atomic resolution and a prominent role for the imaging of crystalline samples is played by the negative spherical aberration imaging technique.
Abstract: Aberration-corrected transmission electron microscopy allows us to image the structure of matter at genuine atomic resolution. A prominent role for the imaging of crystalline samples is played by the negative spherical aberration imaging (NCSI) technique. The physical background of this technique is reviewed. The especially high contrast observed under these conditions owes its origin to an enhancing combination of amplitude contrast due to electron diffraction channelling and phase contrast. A number of examples of the application of NCSI are reviewed in order to illustrate the applicability and the state-of-the-art of this technique.
100 citations
TL;DR: In this article, the authors proposed a phase-retrieval method for the retrieval of the exit-plane wave function in high-resolution transmission electron microscopy using off-axis electron holography and focal series reconstruction.
100 citations
TL;DR: Zernike phase contrast electron microscopy is a powerful tool for resolving the ultrastructure of viruses, because it enables high-contrast images of ice-embedded particles free of contrast transfer function artifacts that can be a problem in conventional cryo-electron microscopy.
98 citations