Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize
Farewell: the NCCR MUST ended 
MUST2022 Conference
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FELs of Europe prize for Jeremy Rouxel
Ruth Signorell wins Doron prize
New FAST-Fellow Uwe Thumm at ETH
International Day of Women and Girls in Science
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EU XFEL Young Scientist Award for Camila Bacellar,
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Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List
Hans Jakob Wörner invited to give the „New Horizons Solvay Lectures” 
Unusual keynote talk at an international scientific conference
NCCR MUST at Scientifica 2021Peter Hamm and co-workers: time-resolved terahertz spectroscopy captures the early stages of the photodetached electron and furthermore provides a direct measure of its initial size
July 6, 2014Direct Observation of the Collapse of the Delocalized Excess Electron in Water
It is generally assumed that the hydrated electron occupies a quasi-spherical cavity surrounded by only a few water molecules in its equilibrated state. However, in the very moment of its generation, before water has had time to respond to the extra charge, it is expected to be significantly larger in size. According to a particle-in-a-box picture, the frequency of its absorption spectrum is a sensitive measure of the initial size of the electronic wavefunction. Here, using transient terahertz spectroscopy, we show that the excess electron initially absorbs in the far-infrared at a frequency for which accompanying ab initio molecular dynamics simulations estimate an initial delocalization length of ≈40 Å. The electron subsequently shrinks due to solvation and thereby leaves the terahertz observation window very quickly, within ≈200 fs.
Publication: J. Savolainen, F. Uhlig, S. Ahmed, P. Hamm and P. Jungwirth (2014) Direct Observation of the Collapse of the Delocalized Excess Electron in Water, Nature Chem 6, 697-701 (10.1038/nchem.1995)
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