Advance Imaging in Transmission Electron Microscopy

In Dark Field TEM, the image is formed by using?
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Which of the following components is adjusted to obtain a Dark Field image in TEM?
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In Dark Field TEM, why are diffracted beams selected instead of the direct beam?
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In Centered Dark Field (CDF) imaging, the selected diffraction spot is positioned:
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The main advantage of WBDF over conventional dark field imaging is:
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A selected-area diffraction pattern exhibits additional weak reflections at positions forbidden by the ideal crystal symmetry. These reflections most likely indicate:
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A bright-field TEM image shows a localized dark region within an otherwise uniform crystalline matrix. Which of the following cannot be concluded solely from the image?
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