A general method for controlling and resolving rotational orientation of molecules in molecule-surface collisions
Open Access
- 8 May 2017
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 8 (1), 15357
- https://doi.org/10.1038/ncomms15357
Abstract
The outcome of molecule–surface collisions can be modified by pre-aligning the molecule; however, experiments accomplishing this are rare because of the difficulty of preparing molecules in aligned quantum states. Here we present a general solution to this problem based on magnetic manipulation of the rotational magnetic moment of the incident molecule. We apply the technique to the scattering of H2 from flat and stepped copper surfaces. We demonstrate control of the molecule’s initial quantum state, allowing a direct comparison of differences in the stereodynamic scattering from the two surfaces. Our results show that a stepped surface exhibits a much larger dependence of the corrugation of the interaction on the alignment of the molecule than the low-index surface. We also demonstrate an extension of the technique that transforms the set-up into an interferometer, which is sensitive to molecular quantum states both before and after the scattering event.This publication has 32 references indexed in Scilit:
- Quantum and classical dynamics of reactive scattering of H2 from metal surfacesChemical Society Reviews, 2015
- Steric Effects in the Chemisorption of Vibrationally Excited Methane on Ni(100)Science, 2010
- Interaction of rotationally aligned and of oriented molecules in gas phase and at surfacesProgress in Surface Science, 2010
- Stereodynamics in state-resolved scattering at the gas–liquid interfaceProceedings of the National Academy of Sciences of the United States of America, 2008
- State resolved desorption measurements as a probe of surface reactionsProgress in Surface Science, 2000
- Rotational Effects on Vibrational Excitation ofon Cu(100)Physical Review Letters, 1999
- New Predictions on Magnetic Rotational Transitions in Scattering ofby LiF(001)Physical Review Letters, 1998
- The Stereodynamics of a Gas-Surface ReactionScience, 1997
- Rotational motion and the dissociation of H2 on Cu(111)The Journal of Chemical Physics, 1994
- Alignment and orientation of N2 scattered from Ag(111)The Journal of Chemical Physics, 1987