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Progress in surface science, 2011-01, Vol.86 (1), p.1-40
Ort / Verlag
Oxford: Elsevier Ltd
Erscheinungsjahr
2011
Link zum Volltext
Quelle
Elsevier ScienceDirect Journals Complete
Beschreibungen/Notizen
► Vibrational dynamics of adsorbates occur on a femto- to picosecond timescale. ► Information on vibrational dynamics can be obtained from nonlinear optical spectroscopy, inelastic electron tunneling and surface-enhanced Raman spectroscopy. ► The relative timescales of competing vibrational energy dissipation channels determine the outcome of surface reactions.
Vibrational energy is a prime reservoir for activating surface processes such as adsorption, desorption and reaction. On metal surfaces, vibrational energy flow occurs on a femto-to picosecond time scale and competing energy dissipation channels in this time range determine the outcome of chemical reactions at surfaces. Fundamental questions of relaxation time, mode selectivity, importance of intra- versus intermolecular coupling and coupling between electronic and vibrational states can now be tackled for relatively complex adsorbates and surfaces. This review looks at the state-of-the-art of surface vibrational dynamics across a wide range of vibrational spectroscopies and the challenges and exciting prospects that lie ahead to further not only our understanding but also the control of vibrational energy flow in model systems as well as real-world problems.