Femtosecond and nanometre visualization of structural dynamics in superheated nanoparticles
| Autor: | Marc Messerschmidt, Nils Kimmel, Thomas Möller, Daniel Rolles, Kai Uwe Kuhnel, Lotte Holmegaard, Christian Reich, Ilme Schlichting, Peter Holl, John D. Bozek, Robert Hartmann, Daniela Rupp, Lothar Strüder, Lars Gumprecht, Ryan Coffee, Joachim Schulz, Arnaud Rouzée, Artem Rudenko, Carlo Schmidt, Benedikt Rudek, Bill White, Andrew Aquila, Stephan Stern, Per Johnsson, Heike Soltau, Andreas Hartmann, Christoph Bostedt, André Hömke, Günter Hauser, Lutz Foucar, Georg Weidenspointner, Sebastian Schorb, Sascha W. Epp, Jochen Küpper, Tais Gorkhover, M. Adolph, Benjamin Erk, Joachim Ullrich |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Nanoparticle Physics::Optics Nanotechnology 02 engineering and technology 01 natural sciences law.invention FREE-ELECTRON LASER law LATTICE-DYNAMICS 0103 physical sciences SCATTERING 010306 general physics PLASMA business.industry EXPANSION 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Pulse (physics) Visualization TIME Superheating VACUUM Femtosecond Optoelectronics Nanometre 0210 nano-technology business Ultrashort pulse MATTER |
| Zdroj: | Nature Photonics Gorkhover, T, Schorb, S, Coffee, R, Adolph, M, Foucar, L, Rupp, D, Aquila, A, Bozek, J D, Epp, S W, Erk, B, Gumprecht, L, Holmegaard, L, Hartmann, A, Hartmann, R, Hauser, G, Holl, P, Hoemke, A, Johnsson, P, Kimmel, N, Kuehnel, K-U, Messerschmidt, M, Reich, C, Rouzee, A, Rudek, B, Schmidt, C, Schulz, J, Soltau, H, Stern, S, Weidenspointner, G, White, B, Kuepper, J, Strueder, L, Schlichting, I, Ullrich, J, Rolles, D, Rudenko, A, Möller, T & Bostedt, C 2016, ' Femtosecond and nanometre visualization of structural dynamics in superheated nanoparticles ', Nature Photonics, vol. 10, no. 2, pp. 93-+ . https://doi.org/10.1038/NPHOTON.2015.264 |
| Popis: | The ability to observe ultrafast structural changes in nanoscopic samples is essential for understanding non-equilibrium phenomena such as chemical reactions(1), matter under extreme conditions(2), ultrafast phase transitions(3) and intense light-matter interactions(4). Established imaging techniques are limited either in time or spatial resolution and typically require samples to be deposited on a substrate, which interferes with the dynamics. Here, we show that coherent X-ray diffraction images from isolated single samples can be used to visualize femtosecond electron density dynamics. We recorded X-ray snapshot images from a nanoplasma expansion, a prototypical non-equilibrium phenomenon(4,5). Single Xe clusters are superheated using an intense optical laser pulse and the structural evolution of the sample is imaged with a single X-ray pulse. We resolved ultrafast surface softening on the nanometre scale at the plasma/vacuum interface within 100 fs of the heating pulse. Our study is the first time-resolved visualization of irreversible femtosecond processes in free, individual nanometre-sized samples. |
| Databáze: | OpenAIRE |
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