Since the discovery of electron-wave duality, electron scattering instrumentation has
developed into a powerful array of techniques for revealing the atomic structure of matter …

One of the grand challenges in chemistry has been to directly observe atomic motions
during chemical processes. The depiction of the nuclear configurations in space-time to …

Real-time access to the internal ultrafast dynamics of complex dissipative optical systems
opens new explorations of pulse-pulse interactions and dynamic patterns. We present the …

X-ray free-electron lasers (XFELs) and table-top sources of x-rays based upon high
harmonic generation (HHG) have revolutionized the field of ultrafast x-ray atomic and …

The ultrafast photoinduced ring-opening of 1, 3-cyclohexadiene constitutes a textbook
example of electrocyclic reactions in organic chemistry and a model for photobiological …

Conical intersections play a critical role in excited-state dynamics of polyatomic molecules
because they govern the reaction pathways of many nonadiabatic processes. However …

The coherence and dephasing of vibrational motions of molecules constitute an integral part
of chemical dynamics, influence material properties and underpin schemes to control …

Time-resolved femtosecond x-ray diffraction patterns from laser-excited molecular iodine are
used to create a movie of intramolecular motion with a temporal and spatial resolution of 30 …

Optical clocks benefit from tight atomic confinement enabling extended interrogation times
as well as Doppler-and recoil-free operation. However, these benefits come at the cost of …

The Born‐Oppenheimer approximation constitutes a cornerstone of our understanding of
molecules and their reactivity, partly because it introduces a somewhat simplified …