Search Results - "Härtwig, J"

Synchrotron Bragg diffraction imaging characterization of synthetic diamond crystals for optical and electronic power device applications by Tran Thi, Thu Nhi, Morse, J., Caliste, D., Fernandez, B., Eon, D., Härtwig, J., Barbay, C., Mer-Calfati, C., Tranchant, N., Arnault, J. C., Lafford, T. A., Baruchel, J.

“…Bragg diffraction imaging enables the quality of synthetic single‐crystal diamond substrates and their overgrown, mostly doped, diamond layers to be…”
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In situ and real-time analysis of TGZM phenomena by synchrotron X-ray radiography by Nguyen Thi, H., Reinhart, G., Buffet, A., Schenk, T., Mangelinck-Noël, N., Jung, H., Bergeon, N., Billia, B., Härtwig, J., Baruchel, J.

“…The development of brilliant third-generation synchrotron X-ray sources, together with advances in X-ray optics and detectors, has provided timely efficient…”
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High-precision x-ray polarimetry by Marx, B, Schulze, K S, Uschmann, I, Kämpfer, T, Lötzsch, R, Wehrhan, O, Wagner, W, Detlefs, C, Roth, T, Härtwig, J, Förster, E, Stöhlker, T, Paulus, G G

“…The polarization purity of 6.457- and 12.914-keV x rays has been improved to the level of 2.4×10(-10) and 5.7×10(-10). The polarizers are channel-cut silicon…”
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Investigation of structural defects in ytterbium doped calcium gadolinum aluminate crystals by means of the synchrotron and conventional diffraction topography by Wierzbicka, E., Malinowska, A., Wierzchowski, W., Härtwig, J., Tran Thi, T.N., Kisielewski, J., Mazur, K.

“…Ytterbium doped calcium gadolinium aluminate (CaGdAlO4) crystals, which is a perspective material for femto-second lasers, have been studied by means of…”
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A method to extract quantitative information in analyzer-based x-ray phase contrast imaging by Pagot, E., Cloetens, P., Fiedler, S., Bravin, A., Coan, P., Baruchel, J., Härtwig, J., Thomlinson, W.

“…Analyzer-based imaging is a powerful phase-sensitive technique that generates improved contrast compared to standard absorption radiography. Combining…”
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In-Situ and Real-Time Analysis of the Formation of Strains and Microstructure Defects during Solidification of Al-3.5 Wt Pct Ni Alloys by Reinhart, G., Buffet, A., Nguyen-Thi, H., Billia, B., Jung, H., Mangelinck-Noël, N., Bergeon, N., Schenk, T., Härtwig, J., Baruchel, J.

“…Alloy solidification was investigated in situ and real time by using a unique experimental setup developed at the European Synchrotron Radiation Facility…”
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In-situ and real-time investigation of columnar-to-equiaxed transition in metallic alloy by NGUYEN-THI, H, REINHART, G, MANGELINCK-NOËL, N, JUNG, H, BILLIA, B, SCHENK, T, GASTALDI, J, HARTWIG, J, BARUCHEL, J

“…In this article, we present a review of observations during Al-3.5 wt pct Ni alloy solidification experiments performed at the European Synchrotron Radiation…”
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Investigation of columnar–equiaxed transition and equiaxed growth of aluminium based alloys by X-ray radiography by Reinhart, G., Mangelinck-Noël, N., Nguyen-Thi, H., Schenk, T., Gastaldi, J., Billia, B., Pino, P., Härtwig, J., Baruchel, J.

“…Among solidification processes, the columnar to equiaxed transition (CET) and equiaxed growth are still raising issues both from the metallurgical point of…”
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Determination of high-purity polarization state of X-rays by Marx, B., Uschmann, I., Höfer, S., Lötzsch, R., Wehrhan, O., Förster, E., Kaluza, M., Stöhlker, T., Gies, H., Detlefs, C., Roth, T., Härtwig, J., Paulus, G.G.

“…We report on the measurement of the highest purity of polarization of X-rays to date. The measurements are performed by combining a brilliant undulator source…”
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Three-dimensional imaging of crystal defects by `topo-tomography by Ludwig, W., Cloetens, P., Härtwig, J., Baruchel, J., Hamelin, B., Bastie, P.

“…A new technique, `topo‐tomography', suitable for the characterization of the three‐dimensional defect structure in bulk crystals, is proposed. The technique…”
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Mechanical strain in actin networks regulates FilGAP and integrin binding to filamin A by Ehrlicher, A. J., Nakamura, F., Hartwig, J. H., Weitz, D. A., Stossel, T. P.

“…Mechanosensing by the actin cytoskeleton Living cells need to respond to mechanical forces for many essential biological functions. This mechanosensing…”
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Structural defects in homoepitaxial diamond layers grown on off-axis Ib HPHT substrates by Bauer, T., Schreck, M., Härtwig, J., Liu, X. H., Wong, S. P., Stritzker, B.

“…In the present study homoepitaxial diamond films have been grown by microwave plasma chemical vapour deposition (MWPCVD) on (001)‐oriented Ib HPHT substrates…”
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An artificial metalloenzyme with the kinetics of native enzymes by Dydio, P., Key, H. M., Nazarenko, A., Rha, J. Y.-E., Seyedkazemi, V., Clark, D. S., Hartwig, J. F.

“…Natural enzymes contain highly evolved active sites that lead to fast rates and high selectivities. Although artificial metalloenzymes have been developed that…”
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Testing the universality of free fall with rubidium and ytterbium in a very large baseline atom interferometer by Hartwig, J, Abend, S, Schubert, C, Schlippert, D, Ahlers, H, Posso-Trujillo, K, Gaaloul, N, Ertmer, W, Rasel, E M

“…We propose a very long baseline atom interferometer test of Einstein's equivalence principle (EEP) with ytterbium and rubidium extending over 10 m of free…”
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μm-resolved high resolution X-ray diffraction imaging for semiconductor quality control by Lübbert, D, Baumbach, T, Härtwig, J, Boller, E, Pernot, E

“…We present a method and an equipment for performing μm-resolved X-ray diffraction area maps, and apply it to wafer defect analysis and industrial wafer quality…”
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Quantum Test of the Universality of Free Fall by Schlippert, D., Hartwig, J., Albers, H., Richardson, L. L., Schubert, C., Roura, A., Schleich, W. P., Ertmer, W., Rasel, E. M.

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Characterization of dislocations in protein crystals by means of synchrotron double-crystal topography by Capelle, B., Epelboin, Y., Härtwig, J., Moraleda, A. B., Otálora, F., Stojanoff, V.

“…Hen egg‐white lysozyme (HEWL) crystals have been studied by means of double‐crystal synchrotron topography. The crystals reveal a number of features that are…”
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Development of catalysts for the hydroamination of olefins by Hartwig, J. F.

“…Studies on the development of palladium, nickel, and rhodium catalysts for the hydroamination of dienes and vinylarenes are described. Enantioselective…”
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Real-time and in situ solidification of Al-based alloys investigated by synchrotron radiation: a unique experimental set-up combining radiography and topography techniques by Buffet, A., Reinhart, G., Schenk, T., Nguyen-Thi, H., Gastaldi, J., Mangelinck-Noël, N., Jung, H., Härtwig, J., Baruchel, J., Billia, B.

“…A unique experimental set‐up combining X‐ray radiography and topography has been recently developed at the ESRF. It allows direct observation of the…”
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X-Ray Spectrometry of Copper: New Results on an Old Subject by Deutsch, M, Förster, E, Hölzer, G, Härtwig, J, Hämäläinen, K, Kao, C-C, Huotari, S, Diamant, R

“…We review recent, and some less recent, measurements of several emission spectra of copper. The results are discussed with special emphasis on elucidating the…”
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