Electrons oscillate around the nucleus of an atom on extremely short timescales, typically completing a cycle in just a few hundred attoseconds. Because of their ultrafast motions, directly observing ...
A pulse of light sets the tempo in the material. Atoms in a crystalline sheet just a few atoms thick begin to move—not randomly, but in a coordinated rhythm, twisting and untwisting in sync like ...
Transient reflectance of multilayer MoSâ‚‚ (a) shows prompt electronic response, while ultrafast electron diffraction (b-c) reveals delayed lattice heating, enabling quantitative modeling of energy ...
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