Heterogeneous to homogeneous melting transition visualized with ultrafast electron diffraction

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Science  29 Jun 2018:
Vol. 360, Issue 6396, pp. 1451-1455
DOI: 10.1126/science.aar2058

Golden ultrafast melting

Understanding fast melting of metals is important for applications such as welding and micromachining. However, fast melting leaves simulation as the only option for probing the process. Mo et al. performed ultrafast electron diffraction experiments on laser-pulsed gold films. This allowed detailed mapping of the melting process, which proceeds through two distinct regimes while the bonding behavior changes in unexpected ways. The results require adding new physical processes to high-energy melting models.

Science, this issue p. 1451

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