Semi-transparent central stop in high-resolution X-ray ptychography using Kirkpatrick–Baez focusing

Vassholz, Malte; Salditt, Tim

doi:10.1107/s0108767313019612

Cited by 45 publications

(54 citation statements)

References 48 publications

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“…In order to make use of the full, highly coherent ux of the KB-focus the Lambda is tested in combination with the Semi-Transparent Central Stop (STCS) [332]. The results within this section can also be considered as a further application to preceding STCS experiments (cf.…”

Section: Discussionmentioning

confidence: 99%

“…correcting for positional errors [20,110,182,307] but on the experimental side this problem is currently mainly approached by increasing the uence, e.g. [111,133,266,286,287,332].…”

Section: Discussionmentioning

confidence: 99%

“…The section here is partly based on results published in [332]. The design and fabrication by Malte Vaÿholz of the W-STCS being used here is gratefully acknowledged.…”

Section: Thank Matthias Hahn For Helping Me With the Sem-edx Analysismentioning

confidence: 99%

“…Especially, in the eld of X-ray microscopy, ptychography has advanced to a powerful tool for imaging on the scale of a few nanometres of arti cial test structures in 2d [266,287,330,332] and 3d [59,133] as well as, for instance, biological specimen in 2d [62,97,172] and 3d [61,109,330]. Moreover, the ptychographic method has also been used for elemental speciation [21,135,285] and for sequential imaging of chemical reactions [142].…”

Section: Ptychographymentioning

confidence: 99%

“…In the second section,`Bacterial Samples', the three leading sample systems Deinococcus radiodurans, Bacillus subtilis and Bacillus thuringiensis are reviewed and concepts of the used sample preparation techniques both for X-ray imaging and transmission electron microscopy are outlined. The third section,`Experiments', gives an overview about the experimental achievements that are partly based on publications in [330,332,333] (sections 3.1, 3.3, 3.4), have been accepted for publication [331] (section 3.2) or are in preparation for publication [329] 1 (section 3.5).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Coherent X-ray diffractive imaging on the single-cell-level of microbial samples

Wilke

2015

Göttingen Series in X-Ray Physics

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Section: Discussionmentioning

confidence: 99%

“…correcting for positional errors [20,110,182,307] but on the experimental side this problem is currently mainly approached by increasing the uence, e.g. [111,133,266,286,287,332].…”

Section: Discussionmentioning

confidence: 99%

“…The section here is partly based on results published in [332]. The design and fabrication by Malte Vaÿholz of the W-STCS being used here is gratefully acknowledged.…”

Section: Thank Matthias Hahn For Helping Me With the Sem-edx Analysismentioning

confidence: 99%

Section: Ptychographymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Coherent X-ray diffractive imaging on the single-cell-level of microbial samples

Wilke

2015

Göttingen Series in X-Ray Physics

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Ptychographic X‐Ray Imaging of Colloidal Crystals

Lazarev

Besedin

Zozulya

et al. 2017

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dipolar interactions. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] The flexibility of colloidal crystals and their response to external stimuli [16][17][18] along with their unique optical properties such as the strongly pronounced structural color and photonic band gap makes them attractive for many applications. [19][20][21][22][23][24][25] Moreover, defects, which determine the mechanical properties of many engineering materials such as metals, [26] can be studied with "atomic" resolution using colloidal crystals. [27][28][29] The high penetration depth of X-rays makes them an ideal tool to access important statistically averaged spatial information about the colloidal crystal structure and disorder over macroscopic sample volume. [7,30,31] Further access to local structure of colloidal crystals can be gained by using microscopy with Fresnel optics and soft X-rays, [32,33] but unfortunately the use of soft X-rays significantly limits the penetration depth. Alternatively, compound refractive lenses (CRLs) can be used as an objective lens for hard X-rays to study thicker samples. [34][35][36] This technique provides full field of view, however, resolution is limited by the resolving power of the optical elements and contrast is limited by using hard X-rays. [37] Ptychographic coherent X-ray imaging is applied to obtain a projection of the electron density of colloidal crystals, which are promising nanoscale materials for optoelectronic applications and important model systems. Using the incident X-ray wavefield reconstructed by mixed states approach, a high resolution and high contrast image of the colloidal crystal structure is obtained by ptychography. The reconstructed colloidal crystal reveals domain structure with an average domain size of about 2 µm. Comparison of the domains formed by the basic close-packed structures, allows us to conclude on the absence of pure hexagonal close-packed domains and confirms the presence of random hexagonal close-packed layers with predominantly face-centered cubic structure within the analyzed part of the colloidal crystal film. The ptychography reconstruction shows that the final structure is complicated and may contain partial dislocations leading to a variation of the stacking sequence in the lateral direction. As such in this work, X-ray ptychography is extended to high resolution imaging of crystalline samples. Ptychography [+]

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