Bright sources under the projection microscope: using an insulating crystal on a conductor as electron source | The European Physical Journal Applied Physics (EPJ AP)

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Fig. 3

Left side: hologram obtained in a point-projection microscope with a celadonite source and, right side: its reconstruction. The inset corresponds to the profile along a horizontal line on the reconstruction. The error function applied to the profile of the “best contrast” reconstructed image gives a source size of s < 2 nm.

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