Heidelberg 2015 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 18: Biomolecules

MO 18.6: Vortrag

Donnerstag, 26. März 2015, 12:30–12:45, PH/SR106

Matter-wave interference enhanced metrology on biomolecules — •Lukas Mairhofer, Christian Brand, Philipp Geyer, Ugur Sezer, Lisa Wörner, and Markus Arndt — Vienna University, Austria

Matter-wave interferometry is a powerful tool for the study of quantum properties of molecules (Berninger, PRA 76, 2007, Eibenberger, PRL 112, 2014). It has been demonstrated for up to 10.000 amu (Eibenberger, PCCP 15, 2013). As amplitude and phase of the fringe pattern are extremely sensitive to external forces matter-wave interference enhances the spatial resolution of deflectometry by a factor of 10e4 compared to ballistic deflectometry. This has been successfully conducted for electric deflection (Eibenberger, NJP 13, 2011).

Thus matter-wave interferometry enhanced deflectometry makes high precision measurements on complex biomolecules feasible. The determination of their magnetic, electric and optical properties allows the investigation of their structure, of photo-induced conformational changes and of photochemistry in the gas phase. Additional water-bonds mimic the molecule's natural environment and allow us to study the transition from gas-phase to in-vivo-behaviour. We will present a geometry for deflection in magnetic fields suitable for interferometry which requires a homogenous force over the extension of the beam. Furthermore we will introduce a source for beams of internally cold, neutral and intact biomolecules up to 4000 amu that are sufficiently slow and intense for interference experiments. Finally we will report on recent progress in our research on biomolecules.