Mehlhorn, M;
Carrasco, J;
Michaelides, A;
Morgenstern, K;
(2009)
Local Investigation of Femtosecond Laser Induced Dynamics of Water Nanoclusters on Cu(111).
PHYS REV LETT
, 103
(2)
, Article 026101. 10.1103/PhysRevLett.103.026101.
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Abstract
We explore the dynamics of low temperature interfacial water nanoclusters on Cu(111) by femtosecond-laser excitation, scanning tunneling microscopy and density functional theory. Laser illumination is used to induce single molecules to diffuse within water clusters and across the surface, breaking and reforming hydrogen bonds. A linear diffusion probability with laser fluence is observed up to 0.6 J/m(2) and we suggest that diffusion is initiated by hot electron attachment and detachment processes. The density functional calculations shed light on the detailed molecular mechanism for water diffusion that is determined by the local structure of the water clusters.
| Type: | Article |
|---|---|
| Title: | Local Investigation of Femtosecond Laser Induced Dynamics of Water Nanoclusters on Cu(111) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.103.026101 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.103.026101 |
| Language: | English |
| Additional information: | © 2009 The American Physical Society |
| Keywords: | INDUCED DESORPTION, METAL-SURFACES, ICE, EXCITATION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/135388 |
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