Search Results - "Gerald Falkenberg"

Perfect X-ray focusing via fitting corrective glasses to aberrated optics by Seiboth, Frank, Schropp, Andreas, Scholz, Maria, Wittwer, Felix, Rödel, Christian, Wünsche, Martin, Ullsperger, Tobias, Nolte, Stefan, Rahomäki, Jussi, Parfeniukas, Karolis, Giakoumidis, Stylianos, Vogt, Ulrich, Wagner, Ulrich, Rau, Christoph, Boesenberg, Ulrike, Garrevoet, Jan, Falkenberg, Gerald, Galtier, Eric C., Ja Lee, Hae, Nagler, Bob, Schroer, Christian G.

“…Due to their short wavelength, X-rays can in principle be focused down to a few nanometres and below. At the same time, it is this short wavelength that puts…”
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PtyNAMi: ptychographic nano‐analytical microscope by Schropp, Andreas, Döhrmann, Ralph, Botta, Stephan, Brückner, Dennis, Kahnt, Maik, Lyubomirskiy, Mikhail, Ossig, Christina, Scholz, Maria, Seyrich, Martin, Stuckelberger, Michael E., Wiljes, Patrik, Wittwer, Felix, Garrevoet, Jan, Falkenberg, Gerald, Fam, Yakub, Sheppard, Thomas L., Grunwaldt, Jan-Dierk, Schroer, Christian G.

“…Ptychographic X‐ray imaging at the highest spatial resolution requires an optimal experimental environment, providing a high coherent flux, excellent…”
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Bimetallic Pt–Re Nanoporous Networks: Synthesis, Characterization, and Catalytic Reactivity by Nijem, Sally, Dery, Shahar, Carmiel, Mazal, Horesh, Gal, Garrevoet, Jan, Spiers, Kathryn, Falkenberg, Gerald, Marini, Carlo, Gross, Elad

“…The preparation of bimetallic nanoporous networks (BNNs) that combine the high surface area and thermal stability of inorganic nanostructures with the unique…”
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Combined use of Synchrotron Radiation Based Micro-X-ray Fluorescence, Micro-X-ray Diffraction, Micro-X-ray Absorption Near-Edge, and Micro-Fourier Transform Infrared Spectroscopies for Revealing an Alternative Degradation Pathway of the Pigment Cadmium Yellow in a Painting by Van Gogh by Van der Snickt, Geert, Janssens, Koen, Dik, Joris, De Nolf, Wout, Vanmeert, Frederik, Jaroszewicz, Jacub, Cotte, Marine, Falkenberg, Gerald, Van der Loeff, Luuk

“…Over the past years a number of studies have described the instability of the pigment cadmium yellow (CdS). In a previous paper we have shown how cadmium…”
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Avian magnetoreception: elaborate iron mineral containing dendrites in the upper beak seem to be a common feature of birds by Falkenberg, Gerald, Fleissner, Gerta, Schuchardt, Kirsten, Kuehbacher, Markus, Thalau, Peter, Mouritsen, Henrik, Heyers, Dominik, Wellenreuther, Gerd, Fleissner, Guenther

“…The magnetic field sensors enabling birds to extract orientational information from the Earth's magnetic field have remained enigmatic. Our previously…”
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Gadolinium and Bio-Metal Association: A Concentration Dependency Tested in a Renal Allograft and Investigated by Micro-Synchrotron XRF by Osterode, Wolf, Falkenberg, Gerald, Regele, Heinz

“…Aims: This study aimed to investigate gadolinium (Gd) and bio-metals in a renal allograft of a patient who was shortly after transplantation repeatedly exposed…”
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Copper and Trace Elements in Gallbladder form Patients with Wilson's Disease Imaged and Determined by Synchrotron X-ray Fluorescence by Osterode, Wolf, Falkenberg, Gerald, Wrba, Fritz

“…Investigations about suspected tissue alterations and the role of gallbladder in Wilson's disease (WD)-an inherited genetic disease with impaired copper…”
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X‐ray diffraction with micrometre spatial resolution for highly absorbing samples by Chakrabarti, Prerana, Wildeis, Anna, Hartmann, Markus, Brandt, Robert, Döhrmann, Ralph, Fevola, Giovanni, Ossig, Christina, Stuckelberger, Michael Elias, Garrevoet, Jan, Falch, Ken Vidar, Galbierz, Vanessa, Falkenberg, Gerald, Modregger, Peter

“…X‐ray diffraction with high spatial resolution is commonly used to characterize (poly)crystalline samples with, for example, respect to local strain, residual…”
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Hard X-ray nanoprobe at beamline P06 at PETRA III by Schroer, Christian G., Boye, Pit, Feldkamp, Jan M., Patommel, Jens, Samberg, Dirk, Schropp, Andreas, Schwab, Andreas, Stephan, Sandra, Falkenberg, Gerald, Wellenreuther, Gerd, Reimers, Nadja

“…We describe the hard X-ray scanning microscope planned for the new synchrotron radiation source PETRA III at DESY in Hamburg, Germany. It is based on…”
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Focusing hard x rays beyond the critical angle of total reflection by adiabatically focusing lenses by Patommel, Jens, Klare, Susanne, Hoppe, Robert, Ritter, Stephan, Samberg, Dirk, Wittwer, Felix, Jahn, Andreas, Richter, Karola, Wenzel, Christian, Bartha, Johann W., Scholz, Maria, Seiboth, Frank, Boesenberg, Ulrike, Falkenberg, Gerald, Schroer, Christian G.

“…In response to the conjecture that the numerical aperture of x-ray optics is fundamentally limited by the critical angle of total reflection [Bergemann et al.,…”
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Correlation between Chemical and Morphological Heterogeneities in LiNi0.5Mn1.5O4 Spinel Composite Electrodes for Lithium-Ion Batteries Determined by Micro-X-ray Fluorescence Analysis by Boesenberg, Ulrike, Falk, Mareike, Ryan, Christopher G, Kirkham, Robin, Menzel, Magnus, Janek, Jürgen, Fröba, Michael, Falkenberg, Gerald, Fittschen, Ursula E. A

“…The high-voltage LiNi0.5Mn1.5O4 (LNMO) spinel is a promising material for high-energy battery applications, despite problems of capacity fade. This is due in…”
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Real-World Emission Factors for Antimony and Other Brake Wear Related Trace Elements: Size-Segregated Values for Light and Heavy Duty Vehicles by Bukowiecki, Nicolas, Lienemann, Peter, Hill, Matthias, Figi, Renato, Richard, Agnes, Furger, Markus, Rickers, Karen, Falkenberg, Gerald, Zhao, Yongjing, Cliff, Steven S, Prevot, Andre S. H, Baltensperger, Urs, Buchmann, Brigitte, Gehrig, Robert

“…Hourly trace element measurements were performed in an urban street canyon and next to an interurban freeway in Switzerland during more than one month each,…”
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Fast Strain Mapping of Nanowire Light-Emitting Diodes Using Nanofocused X‑ray Beams by Stankevič, Tomaš, Hilner, Emelie, Seiboth, Frank, Ciechonski, Rafal, Vescovi, Giuliano, Kryliouk, Olga, Johansson, Ulf, Samuelson, Lars, Wellenreuther, Gerd, Falkenberg, Gerald, Feidenhans’l, Robert, Mikkelsen, Anders

“…X-ray nanobeams are unique nondestructive probes that allow direct measurements of the nanoscale strain distribution and composition inside the micrometer…”
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Strain mapping in an InGaN/GaN nanowire using a nano-focused x-ray beam by Stankevič, Tomaš, Dzhigaev, Dmitry, Bi, Zhaoxia, Rose, Max, Shabalin, Anatoly, Reinhardt, Juliane, Mikkelsen, Anders, Samuelson, Lars, Falkenberg, Gerald, Vartanyants, Ivan A., Feidenhans'l, Robert

“…Strained InGaN/GaN core-shell nanowires (NWs) are promising candidates for solid state lighting applications due to their superior properties compared to…”
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Four-Fold Multi-Modal X-ray Microscopy Measurements of a Cu(In,Ga)Se2 Solar Cell by Ossig, Christina, Strelow, Christian, Flügge, Jan, Kolditz, Andreas, Siebels, Jan, Garrevoet, Jan, Spiers, Kathryn, Seyrich, Martin, Brückner, Dennis, Pyrlik, Niklas, Hagemann, Johannes, Seiboth, Frank, Schropp, Andreas, Carron, Romain, Falkenberg, Gerald, Mews, Alf, Schroer, Christian, Kipp, Tobias, Stuckelberger, Michael

“…Inhomogeneities and defects often limit the overall performance of thin-film solar cells. Therefore, sophisticated microscopy approaches are sought to…”
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Non-negative matrix factorization for the near real-time interpretation of absorption effects in elemental distribution images acquired by X-ray fluorescence imaging by Alfeld, Matthias, Wahabzada, Mirwaes, Bauckhage, Christian, Kersting, Kristian, Wellenreuther, Gerd, Barriobero-Vila, Pere, Requena, Guillermo, Boesenberg, Ulrike, Falkenberg, Gerald

“…Elemental distribution images acquired by imaging X‐ray fluorescence analysis can contain high degrees of redundancy and weakly discernible correlations. In…”
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Three-Dimensional Trace Element Analysis by Confocal X-ray Microfluorescence Imaging by Vincze, Laszlo, Vekemans, Bart, Brenker, Frank E, Falkenberg, Gerald, Rickers, Karen, Somogyi, Andrea, Kersten, Michael, Adams, Freddy

“…A three-dimensional (3D) variant of scanning micro X-ray fluorescence (XRF) is described and evaluated at the ID18F instrument of the European Synchrotron…”
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Methodology toward 3D Micro X-ray Fluorescence Imaging Using an Energy Dispersive Charge-Coupled Device Detector by Garrevoet, Jan, Vekemans, Bart, Tack, Pieter, De Samber, Björn, Schmitz, Sylvia, Brenker, Frank E., Falkenberg, Gerald, Vincze, Laszlo

“…A new three-dimensional (3D) micro X-ray fluorescence (μXRF) methodology based on a novel 2D energy dispersive CCD detector has been developed and evaluated at…”
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In situ imaging of precipitate formation in additively manufactured al-alloys by scanning X-ray fluorescence by Lazar, Isac, Mehta, Bharat, Bertschová, Vendulka, Malladi, Sri Bala Aditya, Ren, Zhe, Das, Srashtasrita, Hagemann, Johannes, Falkenberg, Gerald, Frisk, Karin, Mikkelsen, Anders, Nyborg, Lars

“…Al-alloys incorporating Mn, Cr and Zr, tailored for powder bed fusion-laser beam processes with solubilities three times equilibrium have recently been…”
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Sample Environment for Operando Hard X-ray Tomography—An Enabling Technology for Multimodal Characterization in Heterogeneous Catalysis by Johannes Becher, Sebastian Weber, Dario Ferreira Sanchez, Dmitry E. Doronkin, Jan Garrevoet, Gerald Falkenberg, Debora Motta Meira, Sakura Pascarelli, Jan-Dierk Grunwaldt, Thomas L. Sheppard

“…Structure–activity relations in heterogeneous catalysis can be revealed through in situ and operando measurements of catalysts in their active state. While…”
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