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Ultrafast single-shot diffraction imaging of nanoscale dynamics
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology.
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2008 (English)In: Nature Photonics, ISSN 1749-4885, Vol. 2, no 7, 415-419 p.Article in journal (Refereed) Published
Abstract [en]

The transient nanoscale dynamics of materials on femtosecond to picosecond timescales is of great interest in the study of condensed phase dynamics such as crack formation, phase separation and nucleation, and rapid fluctuations in the liquid state or in biologically relevant environments. The ability to take images in a single shot is the key to studying non-repetitive behaviour mechanisms, a capability that is of great importance in many of these problems. Using coherent diffraction imaging with femtosecond X-ray free-electron-laser pulses we capture time-series snapshots of a solid as it evolves on the ultrafast timescale. Artificial structures imprinted on a Si3N4 window are excited with an optical laser and undergo laser ablation, which is imaged with a spatial resolution of 50 nm and a temporal resolution of 10 ps. By using the shortest available free-electron-laser wavelengths(1) and proven synchronization methods(2) this technique could be extended to spatial resolutions of a few nanometres and temporal resolutions of a few tens of femtoseconds. This experiment opens the door to a new regime of time-resolved experiments in mesoscopic dynamics.

Place, publisher, year, edition, pages
2008. Vol. 2, no 7, 415-419 p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-109161DOI: 10.1038/nphoton.2008.128ISI: 000258193100011OAI: oai:DiVA.org:uu-109161DiVA: diva2:249022
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2014-09-26Bibliographically approved

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Seibert, M. Marvin

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