We present the first lasing results of SwissFEL, a hard X-ray free-electron laser (FEL) that
recently came into operation at the Paul Scherrer Institute in Switzerland. SwissFEL is a very …

The observation of persistent oscillatory signals in multidimensional spectra of protein–pigment
complexes has spurred a debate on the role of coherence-assisted electronic energy …

The role of vibrational coherence—concerted vibrational motion on the excited-state potential
energy surface—in the isomerization of retinal in the protein rhodopsin remains elusive, …

Light-driven sodium pumps actively transport small cations across cellular membranes 1 .
These pumps are used by microorganisms to convert light into membrane potential and have …

Chloride transport by microbial rhodopsins is an essential process for which molecular
details such as the mechanisms that convert light energy to drive ion pumping and ensure the …

2D-IR spectroscopy has matured to a powerful technique to study the structure and dynamics
of peptides, but its extension to larger proteins is still in its infancy, the major limitations …

Knowledge of the temperature dependence of the isobaric specific heat (C p ) upon deep
supercooling can give insights regarding the anomalous properties of water. If a maximum in C …

Vision is initiated by the rhodopsin family of light-sensitive G protein-coupled receptors (GPCRs)
1 . A photon is absorbed by the 11-cis retinal chromophore of rhodopsin, which …

Transition metal reactivity toward carbon–hydrogen (C–H) bonds hinges on the interplay of
electron donation and withdrawal at the metal center. Manipulating this reactivity in a …

Ultrafast photochemical reactions are initiated by vibronic transitions from the reactant ground
state to the excited potential energy surface, directly populating excited-state vibrational …