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We probe porous metal-organic framework materials (MOFs) using broadband terahertz (THz) pulses. Water molecules that are absorbed by the pores of the material display intermolecular dynamics differing from those of free water.
Combining different chemometric tools we demonstrate the reliable identification of substances out of real-world terahertz-spectra. Systematic evaluation of the spectra allows for the distinction between spectral properties arising from samples geometry versus true material absorption.
Time- and angle-resolved photoemission spectroscopy directly enables observation of electron dynamics in condensed matter. Using EUV high harmonic probe extends the observation window in energy and momentum. Tunable mid-infrared pumping allows control of excitation mechanisms.
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