Results 71 to 80 of about 265,473 (286)

Synchronous RNA conformational changes trigger ordered phase transitions in crystals

Nature Communications, 2021
Time-resolved crystallography (TRX) is used for monitoring only small conformational changes of biomacromolecules within the same lattice. Here, the authors report the interplay between synchronous molecular rearrangements and lattice phase transitions ...
Saminathan Ramakrishnan, Jason R. Stagno, Chelsie E. Conrad, Jienyu Ding, Ping Yu, Yuba R. Bhandari, Yun-Tzai Lee, Gary Pauly, Oleksandr Yefanov, Max O. Wiedorn, Juraj Knoska, Dominik Oberthür, Thomas A. White, Anton Barty, Valerio Mariani, Chufeng Li, Wolfgang Brehm, William F. Heinz, Valentin Magidson, Stephen Lockett, Mark S. Hunter, Sébastien Boutet, Nadia A. Zatsepin, Xiaobing Zuo, Thomas D. Grant, Suraj Pandey, Marius Schmidt, John C. H. Spence, Henry N. Chapman, Yun-Xing Wang   +29 more
doaj   +1 more source

Fresh-slice multicolour X-ray free-electron lasers

Nature Photonics, 2016
A new scheme for multicolour X-ray free-electron lasers at soft X-ray wavelengths is proposed. The scheme significantly improves two-colour pulse generation and makes possible the first demonstration of three-colour pulse generation.
Alberto A. Lutman, Timothy J. Maxwell, James P. MacArthur, Marc W. Guetg, Nora Berrah, Ryan N. Coffee, Yuantao Ding, Zhirong Huang, Agostino Marinelli, Stefan Moeller, Johann C. U. Zemella   +10 more
openaire   +3 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Benchmarking of electro-optic monitors for femtosecond electron bunches [PDF]

, 2007
The longitudinal profiles of ultrashort relativistic electron bunches at the soft x-ray free-electron laser FLASH have been investigated using two single-shot detection schemes: an electro-optic (EO) detector measuring the Coulomb field of the bunch and ...
Berden, G., Gillespie, W. Allan, Jamison, S. P., Knabbe, E. A., MacLeod, Allan M., Phillips, P. J., Schlarb, H., Schmidt, B., Schmuser, P., Steffen, B., van der Meer, A. F. G.   +10 more
core   +3 more sources

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Coherent X-rays reveal anomalous molecular diffusion and cage effects in crowded protein solutions

Nature Communications
Understanding protein motion within the cell is crucial for predicting reaction rates and macromolecular transport in the cytoplasm. A key question is how crowded environments affect protein dynamics through hydrodynamic and direct interactions at ...
Anita Girelli, Maddalena Bin, Mariia Filianina, Michelle Dargasz, Nimmi Das Anthuparambil, Johannes Möller, Alexey Zozulya, Iason Andronis, Sonja Timmermann, Sharon Berkowicz, Sebastian Retzbach, Mario Reiser, Agha Mohammad Raza, Marvin Kowalski, Mohammad Sayed Akhundzadeh, Jenny Schrage, Chang Hee Woo, Maximilian D. Senft, Lara Franziska Reichart, Aliaksandr Leonau, Prabhu Rajaiah Prince, William Chèvremont, Tilo Seydel, Jörg Hallmann, Angel Rodriguez-Fernandez, Jan-Etienne Pudell, Felix Brausse, Ulrike Boesenberg, James Wrigley, Mohamed Youssef, Wei Lu, Wonhyuk Jo, Roman Shayduk, Trey Guest, Anders Madsen, Felix Lehmkühler, Michael Paulus, Fajun Zhang, Frank Schreiber, Christian Gutt, Fivos Perakis   +40 more
doaj   +1 more source

Valence fluctuations and Kondo resonance in Co adatom on Cu2N/Cu(100) surface: DFT + ED study

New Journal of Physics, 2021
We report density functional theory plus exact diagonalization of the multi-orbital Anderson impurity model calculations including the spin–orbit coupling for the Co adatom on the top of Cu _2 N/Cu(001) surface.
M Tchaplianka, A B Shick, A I Lichtenstein   +2 more
doaj   +1 more source

On Free-Electron Laser Growing Modes and their Bandwidth

, 2011
Free-electron lasers play an increasing role in science, from generating unique femtosecond X- ray pulses for single short recording of the protein structures to amplifying feeble interactions in advanced cooling systems for high-energy hadron colliders.
A. M. Kondratenko, E. L. Saldin, Gang Wang, H. Nyquist, L. A. MacColl, L. D. Landau, P. Emma, R. C. Davidson, R. J. Briggs, Stephen Webb, Vladimir N. Litvinenko   +10 more
core   +2 more sources

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source