Fast deterministic ptychographic imaging using X-rays.
Microsc Microanal
; 20(4): 1090-9, 2014 Aug.
Article
em En
| MEDLINE
| ID: mdl-24851899
ABSTRACT
We present a deterministic approach to the ptychographic retrieval of the wave at the exit surface of a specimen of condensed matter illuminated by X-rays. The method is based on the solution of an overdetermined set of linear equations, and is robust to measurement noise. The set of linear equations is efficiently solved using the conjugate gradient least-squares method implemented using fast Fourier transforms. The method is demonstrated using a data set obtained from a gold-chromium nanostructured test object. It is shown that the transmission function retrieved by this linear method is quantitatively comparable with established methods of ptychography, with a large decrease in computational time, and is thus a good candidate for real-time reconstruction.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Difração de Raios X
Tipo de estudo:
Evaluation_studies
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article