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Stephen W Wilkins

Explore the profile of Stephen W Wilkins including associated specialties, affiliations and a list of published articles. Areas
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Recent Articles
1.
Mayo S, Stevenson A, Wilkins S
Materials (Basel) . 2017 Aug; 5(5):937-965. PMID: 28817018
X-ray phase-contrast imaging and tomography make use of the refraction of X-rays by the sample in image formation. This provides considerable additional information in the image compared to conventional X-ray...
2.
Stevenson A, Hall C, Mayo S, Hausermann D, Maksimenko A, Gureyev T, et al.
J Synchrotron Radiat . 2012 Aug; 19(Pt 5):728-50. PMID: 22898953
The first monochromatic X-ray tomography experiments conducted at the Imaging and Medical beamline of the Australian Synchrotron are reported. The sample was a phantom comprising nylon line, Al wire and...
3.
James S, Myers D, de Jonge M, Vogt S, Ryan C, Sexton B, et al.
Anal Bioanal Chem . 2011 May; 401(3):853-64. PMID: 21533642
X-ray fluorescence microscopy (XFM) facilitates high-sensitivity quantitative imaging of trace metals at high spatial resolution over large sample areas and can be applied to a diverse range of biological samples....
4.
Stevenson A, Mayo S, Hausermann D, Maksimenko A, Garrett R, Hall C, et al.
J Synchrotron Radiat . 2009 Dec; 17(1):75-80. PMID: 20029114
The Imaging and Medical beamline at the Australian Synchrotron achieved ;first light' in December 2008. Here, the first experiments performed on the beamline are reported, which involved both X-ray imaging...
5.
Gao D, Wilkins S, Parry D, Gureyev T, Miller P, Hanssen E
Opt Express . 2009 Jun; 14(17):7889-94. PMID: 19529156
The X-ray ultramicroscope (XuM), based on using a scanning electron microscope as host, provides a new approach to X-ray projection microscopy. The right-angle-type integrated sample cells described here expand the...
6.
Gureyev T, Nesterets Y, Stevenson A, Miller P, Pogany A, Wilkins S
Opt Express . 2008 Jun; 16(5):3223-41. PMID: 18542410
Simple analytical expressions are derived for the spatial resolution, contrast and signal-to-noise in X-ray projection images of a generic phase edge. The obtained expressions take into account the maximum phase...
7.
Gureyev T, Nesterets Y, Pavlov K, Wilkins S
J Opt Soc Am A Opt Image Sci Vis . 2007 Jul; 24(8):2230-41. PMID: 17621326
Optical systems capable of three-dimensional transmission imaging are considered; these systems employ a conventional tomographic setup with an added linear shift-invariant optical system between the sample and the detector. A...
8.
Gureyev T, Nesterets Y, Paganin D, Wilkins S
J Opt Soc Am A Opt Image Sci Vis . 2006 Feb; 23(1):34-42. PMID: 16478058
Effects of incident illumination on phase-contrast images obtained by means of free-space propagation are investigated under the "transport-of-intensity" approximation. Analytical expressions for image intensity distribution are derived in the cases...
9.
Gureyev T, Davis T, Pogany A, Mayo S, Wilkins S
Appl Opt . 2004 May; 43(12):2418-30. PMID: 15119611
The first Born and Rytov approximations of scattering theory are introduced in their less familiar near-field versions. Two algorithms for phase retrieval based on these approximations are then described. It...
10.
Gureyev T, Nesterets Y, Stevenson A, Wilkins S
Appl Opt . 2003 Dec; 42(32):6488-94. PMID: 14650491
A new method for deconvolution of one-dimensional and multidimensional data is suggested. The proposed algorithm is local in the sense that the deconvolved data at a given point depend only...