Hard x-ray phase-contrast microscopy using a Gabor hologram without a zero-order term.
Appl Opt
; 59(20): 5918-5923, 2020 Jul 10.
Article
em En
| MEDLINE
| ID: mdl-32672734
ABSTRACT
In order to achieve a nanometer-scale resolution in an x-ray microscopy system, a Gabor-type hologram was produced by eliminating the zero-order term of the object diffraction pattern. In this system, a Fresnel zone plate was used for strong illumination of an object, and the zero-order diffraction was physically eliminated by a center stop. An accurate phase plate of π/2 in the Zernike method was numerically created, and the phase-contrast image was realized. The theoretical resolution was 19.8 nm. We proved that a gold nanocube with a size of 50 nm can be reconstructed with the predicted resolution.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Appl Opt
Ano de publicação:
2020
Tipo de documento:
Article