Results 131 to 140 of about 10,368 (249)

Megahertz pulse trains enable multi-hit serial femtosecond crystallography experiments at X-ray free electron lasers. [PDF]

Nat Commun, 2022
Holmes S, Kirkwood HJ, Bean R, Giewekemeyer K, Martin AV, Hadian-Jazi M, Wiedorn MO, Oberthür D, Marman H, Adriano L, Al-Qudami N, Bajt S, Barák I, Bari S, Bielecki J, Brockhauser S, Coleman MA, Cruz-Mazo F, Danilevski C, Dörner K, Gañán-Calvo AM, Graceffa R, Fanghor H, Heymann M, Frank M, Kaukher A, Kim Y, Kobe B, Knoška J, Laurus T, Letrun R, Maia L, Messerschmidt M, Metz M, Michelat T, Mills G, Molodtsov S, Monteiro DCF, Morgan AJ, Münnich A, Peña Murillo GE, Previtali G, Round A, Sato T, Schubert R, Schulz J, Shelby M, Seuring C, Sellberg JA, Sikorski M, Silenzi A, Stern S, Sztuk-Dambietz J, Szuba J, Trebbin M, Vagovic P, Ve T, Weinhausen B, Wrona K, Xavier PL, Xu C, Yefanov O, Nugent KA, Chapman HN, Mancuso AP, Barty A, Abbey B, Darmanin C.   +67 more
europepmc   +1 more source

Two Coexisting Pathways to Volatility in Valence‐Change Memory Devices

Advanced Functional Materials, EarlyView.
Volatile VCM‐type memristive devices exhibit current relaxation after resistive switching, but their microscopic origin remains debated. Using pulsed measurements and a new Tunnel‐DLTS approach on Pt/SrTiO3/Nb:SrTiO3 devices, we show that post‐SET volatility is predominantly ionic, while electronic contributions—arising from quasi‐Fermi‐level ...
Johannes Hellwig, Clemens Wittberg, Dimitrios Spithouris, Regina Dittmann   +3 more
wiley   +1 more source

Using X-ray free-electron lasers for spectroscopy of molecular catalysts and metalloenzymes. [PDF]

Nat Rev Phys, 2021
Bergmann U, Kern J, Schoenlein RW, Wernet P, Yachandra VK, Yano J.   +5 more
europepmc   +1 more source

Unusual Temperature‐Enhanced Bulk Photovoltaic Effect Beyond the Centrosymmetric Phase in CuCrP2S6 van der Waals Crystals

Advanced Functional Materials, EarlyView.
Contrary to conventional expectations, the bulk photovoltaic effect in CuCrP2S6 is enhanced rather than suppressed upon transitioning into the crystallographically centrosymmetric phase. Dynamic Cu‐ion disorder creates transient polar states, which substantially amplifies zero‐bias photocurrent (shift‐current) generation, establishing dynamic symmetry ...
Ryoga Murata, Takao Sasagawa
wiley   +1 more source

Classification of diffraction patterns using a convolutional neural network in single-particle-imaging experiments performed at X-ray free-electron lasers. [PDF]

J Appl Crystallogr, 2022
Assalauova D, Ignatenko A, Isensee F, Trofimova D, Vartanyants IA.   +4 more
europepmc   +1 more source

One‐Step Curcumin‐Mediated Multiphoton Lithography for Bioactive 3D Scaffolds

Advanced Functional Materials, EarlyView.
Curcumin‐mediated multiphoton lithography enables one‐step fabrication of highly architected complex gelatin methacryloyl scaffolds by exploiting curcumin as a multifunctional bioactive photoinitiator. The resulting 3D structures support mesenchymal stem cell adhesion, proliferation, and migration, while exhibiting dual antibacterial activity through ...
Myrto Charitaki, Michalis Stavrou, Chrysanthi Pinelopi Apostolidou, Elmina Kabouraki, David Gray, Anna Mitraki, Anthi Ranella, Maria Farsari   +7 more
wiley   +1 more source

Dichography: two-frame ultrafast imaging from a single diffraction pattern

Nature Communications
We experimentally demonstrate that pairs of time-delayed ultrabright and ultrashort X-ray pulses of two different colors, delivered by modern X-ray Free Electron Lasers, can provide two time-delayed snapshots of a sample.
Linos Hecht, Andre Al Haddad, Björn Bastian, Thomas M. Baumann, Johan Bielecki, Christoph Bostedt, Subhendu De, Alberto De Fanis, Simon Dold, Thomas Fennel, Fanny Goy, Christina Graf, Robert Hartmann, Georg Jakobs, Maximilian Joschko, Gregor Knopp, Katharina Kolatzki, Sivarama Krishnan, Björn Kruse, Asbjørn Ø. Lægdsmand, Bruno Langbehn, Suddhasattwa Mandal, Tommaso Mazza, Michael Meyer, Christian Peltz, Thomas Pfeifer, Safi Rafie-Zinedine, Antoine Sarracini, Mario Sauppe, Florian Schenk, Kirsten Schnorr, Björn Senfftleben, Keshav Sishodia, Frank Stienkemeier, Zhibin Sun, Rico Mayro P. Tanyag, Paul Tümmler, Sergey Usenko, Carl Frederic Ussling, Vanessa Wood, Xinhua Xie, Maksym Yarema, Olesya Yarema, Nuri Yazdani, Hankai Zhang, Bernd von Issendorff, Yevheniy Ovcharenko, Marcel Mudrich, Daniela Rupp, Alessandro Colombo   +49 more
doaj   +1 more source

A self-referenced in-situ arrival time monitor for X-ray free-electron lasers. [PDF]

Sci Rep, 2021
Diez M, Galler A, Schulz S, Boemer C, Coffee RN, Hartmann N, Heider R, Wagner MS, Helml W, Katayama T, Sato T, Sato T, Yabashi M, Bressler C.   +13 more
europepmc   +1 more source

Interaction‐Driven Assembly Pathways in Heterogeneous Active Microrobotic Systems

Advanced Functional Materials, EarlyView.
Peanut‐ and cube‐shaped light‐powered microrobots exhibit distinct magnetic and photocatalytic responses that determine their heterogeneous self‐assembly. In the dark, magnetic dipole interactions drive colloidal copolymerization with cubes acting as nucleation centers, whereas under light irradiation, phoretic interactions compete with magnetic ...
Domenico Calabrò, Roshan Velluvakandy, Martin Pumera, Francesco Priolo, Salvo Mirabella, Mario Urso   +5 more
wiley   +1 more source

Conformational alterations in unidirectional ion transport of a light-driven chloride pump revealed using X-ray free electron lasers. [PDF]

Proc Natl Acad Sci U S A, 2022
Hosaka T, Nomura T, Kubo M, Nakane T, Fangjia L, Sekine SI, Ito T, Murayama K, Ihara K, Ehara H, Kashiwagi K, Katsura K, Akasaka R, Hisano T, Tanaka T, Tanaka R, Arima T, Yamashita A, Sugahara M, Naitow H, Matsuura Y, Yoshizawa S, Tono K, Owada S, Nureki O, Kimura-Someya T, Iwata S, Nango E, Shirouzu M.   +28 more
europepmc   +1 more source