Prof. Eckart Hasselbrink
Insights into the short life of vibrations from time-resolved spectroscopy
April 19, 2024
Start: 9:30 am
Conference Room at Leibniz IPHT
Contact persons at Leibniz IPHT: Benjamin Dietzek-Ivanšić
Molecular vibrations are the degrees of freedom into which often large proportions of the excess energy from chemical reactions are channeled. Vibrations are also a energy reservoir with large efficacy for activating reaction. However vibrational excitations in condensed matter are also short-lived. Time-resolved vibrational spectroscopy has seen great progress in the last decades largely due to the advent of powerful short pulsed mid-IR laser systems. Spectroscopy performed with these allow us to gain detailed insight into the energy flow between different degrees of freedom. In my lecture I will illustrate this research by studies from my laboratory: 1) The vibrational dynamics of simple adsorbates on semi-conductor surfaces, and 2) The vibrational dynamics of C-H stretching modes studied in layers of fatty acids.
The lecture will be given in English.