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Ultrafast Three-Dimensional Imaging of Lattice Dynamics in Individual Gold Nanocrystals

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Science  05 Jul 2013:
Vol. 341, Issue 6141, pp. 56-59
DOI: 10.1126/science.1236034

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Distorted Nanoparticle

Nanoparticles have found many applications in modern technology; however, the full characterization of individual particles is challenging. One of the most interesting mechanical properties is the particle's response to lattice distortion. This property has been probed for ensembles of nanoparticles, but the required averaging may distort the results. Clark et al. (p. 56, published online 23 May; see the Perspective by Hartland and Lo) were able to image the generation and subsequent evolution of coherent acoustic phonons from an individual perturbed gold nanocrystal on the picosecond time scale.

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