Helfen L - Search Results

1

Comparative study of multilayers used in monochromators for synchrotron-based coherent hard X-ray imaging.

Rack A, Weitkamp T, Riotte M, Grigoriev D, Rack T, Helfen L, Baumbach T, Dietsch R, Holz T, Krämer M, Siewert F, Meduna M, Cloetens P, Ziegler E. Rack A, et al. Among authors: helfen l. J Synchrotron Radiat. 2010 Jul;17(4):496-510. doi: 10.1107/S0909049510011623. Epub 2010 May 19. J Synchrotron Radiat. 2010. PMID: 20567082

2

Relics in medieval altarpieces? Combining X-ray tomographic, laminographic and phase-contrast imaging to visualize thin organic objects in paintings.

Krug K, Porra L, Coan P, Wallert A, Dik J, Coerdt A, Bravin A, Elyyan M, Reischig P, Helfen L, Baumbach T. Krug K, et al. Among authors: helfen l. J Synchrotron Radiat. 2008 Jan;15(Pt 1):55-61. doi: 10.1107/S0909049507045438. Epub 2007 Dec 18. J Synchrotron Radiat. 2008. PMID: 18097079

3

Analysis of spatial cross-correlations in multi-constituent volume data.

Rack A, Helfen L, Baumbach T, Kirste S, Banhart J, Schladitz K, Ohser J. Rack A, et al. Among authors: helfen l. J Microsc. 2008 Nov;232(2):282-92. doi: 10.1111/j.1365-2818.2008.02100.x. J Microsc. 2008. PMID: 19017228

4

Non-invasive 3D-visualization with sub-micron resolution using synchrotron-X-ray-tomography.

Heethoff M, Helfen L, Cloetens P. Heethoff M, et al. Among authors: helfen l. J Vis Exp. 2008 May 27;(15):737. doi: 10.3791/737. J Vis Exp. 2008. PMID: 19066586 Free PMC article.

5

Synchrotron radiation computed laminography for polymer composite failure studies.

Xu F, Helfen L, Moffat AJ, Johnson G, Sinclair I, Baumbach T. Xu F, et al. Among authors: helfen l. J Synchrotron Radiat. 2010 Mar;17(2):222-6. doi: 10.1107/S0909049510001512. Epub 2010 Jan 30. J Synchrotron Radiat. 2010. PMID: 20157275 Free PMC article.

6

Comparison of image quality in computed laminography and tomography.

Xu F, Helfen L, Baumbach T, Suhonen H. Xu F, et al. Among authors: helfen l. Opt Express. 2012 Jan 16;20(2):794-806. doi: 10.1364/OE.20.000794. Opt Express. 2012. PMID: 22274425 Free article.

7

Coalescence analysis for evolving foams via optical flow computation on projection image sequences.

Myagotin A, Ershov A, Helfen L, Verdejo R, Belyaev A, Baumbach T. Myagotin A, et al. Among authors: helfen l. J Synchrotron Radiat. 2012 Jul;19(Pt 4):483-91. doi: 10.1107/S0909049512015099. Epub 2012 May 5. J Synchrotron Radiat. 2012. PMID: 22713878

8

Correlative nanoscale 3D imaging of structure and composition in extended objects.

Xu F, Helfen L, Suhonen H, Elgrabli D, Bayat S, Reischig P, Baumbach T, Cloetens P. Xu F, et al. Among authors: helfen l. PLoS One. 2012;7(11):e50124. doi: 10.1371/journal.pone.0050124. Epub 2012 Nov 19. PLoS One. 2012. PMID: 23185554 Free PMC article.

9

Hierarchical radioscopy using polychromatic and partially coherent hard synchrotron radiation.

Rack A, García-Moreno F, Helfen L, Mukherjee M, Jiménez C, Rack T, Cloetens P, Banhart J. Rack A, et al. Among authors: helfen l. Appl Opt. 2013 Nov 20;52(33):8122-7. doi: 10.1364/AO.52.008122. Appl Opt. 2013. PMID: 24513767

10

Direct three-dimensional imaging of polymer-water interfaces by nanoscale hard X-ray phase tomography.

Cheng Y, Suhonen H, Helfen L, Li J, Xu F, Grunze M, Levkin PA, Baumbach T. Cheng Y, et al. Among authors: helfen l. Soft Matter. 2014 May 7;10(17):2982-90. doi: 10.1039/c3sm52604f. Soft Matter. 2014. PMID: 24695753

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