Use of extended and prepared reference objects in experimental Fourier transform x-ray holography | Zendy

Haifeng He | Zendy; Uwe Weierstall | Zendy; John C. H. Spence | Zendy; M. Howells | Zendy; H. A. Padmore | Zendy; Stefano Marchesini | Zendy; Henry N. Chapman | Zendy

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Use of extended and prepared reference objects in experimental Fourier transform x-ray holography

Author(s) -

Haifeng He,

Uwe Weierstall,

John C. H. Spence,

M. Howells,

H. A. Padmore,

Stefano Marchesini,

Henry N. Chapman

Publication year - 2004

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1795360

Subject(s) - holography , fourier transform , diffraction , wiener filter , optics , resolution (logic) , materials science , physics , computer science , computer vision , mathematics , artificial intelligence , mathematical analysis

The use of one or more gold nanoballs as reference objects for FourierTransform holography (FTH) is analysed using experimental soft X-raydiffraction from objects consisting of separated clusters of these balls. Theholograms are deconvoluted against ball reference objects to invert to images,in combination with a Wiener filter to control noise. A resolution of ~30nm,smaller than one ball, is obtained even if a large cluster of balls is used asthe reference, giving the best resolution yet obtained by X-ray FTH. Methods ofdealing with missing data due to a beamstop are discussed. Practical preparedobjects which satisfy the FTH condition are suggested, and methods of formingthem described.Comment: 7 pages, 2 figures, submitted to Applied Physics Letter

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