Publication Date:
2013-05-25
Description:
Key insights into the behavior of materials can be gained by observing their structure as they undergo lattice distortion. Laser pulses on the femtosecond time scale can be used to induce disorder in a "pump-probe" experiment with the ensuing transients being probed stroboscopically with femtosecond pulses of visible light, x-rays, or electrons. Here we report three-dimensional imaging of the generation and subsequent evolution of coherent acoustic phonons on the picosecond time scale within a single gold nanocrystal by means of an x-ray free-electron laser, providing insights into the physics of this phenomenon. Our results allow comparison and confirmation of predictive models based on continuum elasticity theory and molecular dynamics simulations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, J N -- Beitra, L -- Xiong, G -- Higginbotham, A -- Fritz, D M -- Lemke, H T -- Zhu, D -- Chollet, M -- Williams, G J -- Messerschmidt, M -- Abbey, B -- Harder, R J -- Korsunsky, A M -- Wark, J S -- Robinson, I K -- BB/H022597/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2013 Jul 5;341(6141):56-9. doi: 10.1126/science.1236034. Epub 2013 May 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉London Centre for Nanotechnology, University College London, London, UK. jesse.clark@ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23704372" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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