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Ultrafast three-dimensional imaging of lattice dynamics in individual gold nanocrystals

Clark, JN; Beitra, L; Xiong, G; Higginbotham, A; Fritz, DM; Lemke, HT; Zhu, D; ... Robinson, IK; + view all (2013) Ultrafast three-dimensional imaging of lattice dynamics in individual gold nanocrystals. Science , 341 (6141) pp. 56-59. 10.1126/science.1236034. Green open access

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Abstract

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.

Type: Article
Title: Ultrafast three-dimensional imaging of lattice dynamics in individual gold nanocrystals
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1126/science.1236034
Publisher version: http://dx.doi.org/10.1126/science.1236034
Language: English
Additional information: This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science 314(6141), 5 July 2013, doi: 10.1126/science.1236034.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1398733
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