Ontology highlight
ABSTRACT:
SUBMITTER: Block A
PROVIDER: S-EPMC6510559 | biostudies-literature | 2019 May
REPOSITORIES: biostudies-literature
Science advances 20190510 5
The ultrafast response of metals to light is governed by intriguing nonequilibrium dynamics involving the interplay of excited electrons and phonons. The coupling between them leads to nonlinear diffusion behavior on ultrashort time scales. Here, we use scanning ultrafast thermomodulation microscopy to image the spatiotemporal hot-electron diffusion in thin gold films. By tracking local transient reflectivity with 20-nm spatial precision and 0.25-ps temporal resolution, we reveal two distinct di ...[more]