Nanometer resolution holography with the low energy electron point source microscope

Eisele A, Völkel B, Grunze M, Gölzhäuser A (2008)
ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS 222(5-6): 779-787.

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Abstract
Holography with the low energy electron point source (LEEPS) microscope has been explored for imaging of unstained biomolecules. DNA ropes are prepared on microfabricated sample supports and imaged with coherent 40 eV electrons emitted from a W(111) point source. We reconstruct the electron wave front and show that the correct source-to-object distance can be determined by analyzing the focus of the reconstruction. Upon variation of the source position. the reconstruction shows reproducible object features with an object focus located at the correct tip-to-object distance with a depth of sharpness of similar to 40 nm. It is argued that reconstruction artifacts can be identified by their focus behavior and that only features ill the first focus coming from the screen - truly relate to the object's structure.
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Eisele A, Völkel B, Grunze M, Gölzhäuser A. Nanometer resolution holography with the low energy electron point source microscope. ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS. 2008;222(5-6):779-787.
Eisele, A., Völkel, B., Grunze, M., & Gölzhäuser, A. (2008). Nanometer resolution holography with the low energy electron point source microscope. ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 222(5-6), 779-787.
Eisele, A., Völkel, B., Grunze, M., and Gölzhäuser, A. (2008). Nanometer resolution holography with the low energy electron point source microscope. ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS 222, 779-787.
Eisele, A., et al., 2008. Nanometer resolution holography with the low energy electron point source microscope. ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 222(5-6), p 779-787.
A. Eisele, et al., “Nanometer resolution holography with the low energy electron point source microscope”, ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, vol. 222, 2008, pp. 779-787.
Eisele, A., Völkel, B., Grunze, M., Gölzhäuser, A.: Nanometer resolution holography with the low energy electron point source microscope. ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS. 222, 779-787 (2008).
Eisele, Andreas, Völkel, Berthold, Grunze, Michael, and Gölzhäuser, Armin. “Nanometer resolution holography with the low energy electron point source microscope”. ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS 222.5-6 (2008): 779-787.
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