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@article{faucris.239403681,
abstract = {Exploiting small-angle X-ray and neutron scattering (SAXS/SANS) on the same sample volume at the same time provides complementary nanoscale structural information in two different contrast situations. Unlike an independent experimental approach, the truly combined SAXS/SANS experimental approach ensures the exactness of the probed samples, particularly for in situ studies. Here, an advanced portable SAXS system that is dimensionally suitable for installation in the D22 zone of ILL is introduced. The SAXS apparatus is based on a Rigaku switchable copper/molybdenum microfocus rotating-anode X-ray generator and a DECTRIS detector with a changeable sample-to-detector distance of up to 1.6 m in a vacuum chamber. A case study is presented to demonstrate the uniqueness of the newly established method. Temporal structural rearrangements of both the organic stabilizing agent and organically capped gold colloidal particles during gold nanoparticle growth are simultaneously probed, enabling the immediate acquisition of correlated structural information. The new nano-analytical method will open the way for real-time investigations of a wide range of innovative nanomaterials and will enable comprehensive in situ studies on biological systems. The potential development of a fully automated SAXS/SANS system with a common control environment and additional sample environments, permitting a continual and efficient operation of the system by ILL users, is also introduced.},
author = {Metwalli, Ezzeldin and Götz, Klaus and Lages, Sebastian and Bär, Christian and Zech, Tobias and Noll, Dennis and Schuldes, Isabel and Schindler, Torben and Prihoda, Annemarie and Lang, Herbert and Grasser, Jürgen and Jacques, Mark and Didier, Luc and Cyril, Amrouni and Martel, Anne and Porcar, Lionel and Unruh, Tobias},
doi = {10.1107/S1600576720005208},
faupublication = {yes},
journal = {Journal of Applied Crystallography},
note = {CRIS-Team WoS Importer:2020-06-19},
pages = {722-733},
peerreviewed = {Yes},
title = {{A} novel experimental approach for nanostructure analysis: simultaneous small-angle {X}-ray and neutron scattering},
volume = {53},
year = {2020}
}
@article{faucris.210046955,
abstract = {Since the properties of functional materials are highly dependent on their specific structure, and since the structural changes, for example during crystallization, induced by coating and annealing processes are significant, the study of structure and its formation is of interest for fundamental and applied science. However, structure analysis is often limited to ex situ determination of final states due to the lack of specialized sample cells that enable real-time investigations. The lack of such cells is mainly due to their fairly complex design and geometrical restrictions defined by the beamline setups. To overcome this obstacle, an advanced sample cell has been designed and constructed; it combines automated doctor blading, solvent vapor annealing and sample hydration with real-time grazing-incidence wide- and small-angle scattering (GIWAXS/GISAXS) and X-ray reflectivity (XRR). The sample cell has limited spatial requirements and is therefore widely usable at beamlines and laboratory-scale instruments. The cell is fully automatized and remains portable, including the necessary electronics. In addition, the cell can be used by interested scientists in cooperation with the Institute for Crystallography and Structural Physics and is expandable with regard to optical secondary probes. Exemplary research studies are presented, in the form of coating of P3HT:PC61PM thin films, solvent vapor annealing of DRCN5T:PC71BM thin films, and hydration of supported phospholipid multilayers, to demonstrate the capabilities of the in situ cell.},
author = {Berlinghof, Marvin and Bär, Christian and Haas, D. and Bertram, F. and Langner, Stefan and Osvet, Andres and Chumakov, A. and Will, Johannes and Schindler, Torben and Zech, Tobias and Brabec, Christoph and Unruh, Tobias},
doi = {10.1107/S1600577518013218},
faupublication = {yes},
journal = {Journal of Synchrotron Radiation},
keywords = {in situ;GIWAXS;GISAXS;XRR;thin film},
pages = {1664-1672},
peerreviewed = {unknown},
title = {{Flexible} sample cell for real-time {GISAXS}, {GIWAXS} and {XRR}: design and construction},
volume = {25},
year = {2018}
}
@article{faucris.264042098,
abstract = {A customized portable SAXS instrument has recently been constructed, installed, and tested at the D22 SANS instrument at ILL. Technical characteristics of this newly established plug-and-play SAXS system have recently been reported (J. Appl. Cryst. 2020, 53, 722). An optimized lead shielding arrangement on the SAXS system and a double energy threshold X-ray detector have been further implemented to substantially suppress the unavoidable high-energy gamma radiation background on the X-ray detector. The performance of the upgraded SAXS instrument has been examined systematically by determining background suppression factors (SFs) at various experimental conditions, including different neutron beam collimation lengths and X-ray sample-to-detector distances (SDDX-ray). Improved signal-to-noise ratio SAXS data enables combined SAXS and SANS measurements for all possible experimental conditions at the D22 instrument. Both SAXS and SANS data from the same sample volume can be fitted simultaneously using a common structural model, allowing unambiguous interpretation of the scattering data. Importantly, advanced in situ/real time investigations are possible, where both the SAXS and the SANS data can reveal time-resolved complementary nanoscale structural information.