Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize
Farewell: the NCCR MUST ended 
MUST2022 Conference
New scientific highlights
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
New scientific highlight
EU XFEL Young Scientist Award for Camila Bacellar,
Prizes for Giulia Mancini and Rebeca Gomez Castillo
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 2021Femtosecond Time-resolved Imaging of Chiral Molecules
| Date | Do, 22.10.2015 | |
| Time | 16.30 | |
| Speaker | Prof. Henrik Stapelfeldt, University of Aarhus, Denmark | |
| Location | EPF Lausanne, CH G1 495 | |
| Program | I will discuss how it is possible to directly image torsion of chiral molecules, consisting of two benzene rings linked by a carbon-carbon single bond, on their natural femtosecond time-scale. The torsional motion is of special importance because it is the fundamental reaction coordinate linking the left-handed and the right-handed mirror forms of the chiral molecule. Experimentally, the molecules are initially fixed-in-space by laser-induced 3-dimensional adiabatic alignment to provide the best view of them. Next, torsion is induced by a femtosecond pump pulse and monitored in real time by Coulomb exploding the molecules with a delayed, intense femtosecond probe pulse and detecting the emission direction of the ionic fragments. The torsional motion occurs with a period of 1.3 ps and an amplitude of 3 degrees which can be doubled by using two optimally synchronized pump pulses. The torsion persists for more than 150 ps corresponding to approximately 120 torsional oscillations. Prospect for using the method to determine the absolute configuration of chiral molecules will also be discussed. |
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| Link | isic.epfl.ch | |
