EPSRC Reference: |
GR/R83057/01 |
Title: |
Scanned-Energy Mode Photoelectron Diffraction for Absorbate Structure Determination on Metals and Oxides |
Principal Investigator: |
Woodruff, Professor DP |
Other Investigators: |
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Researcher Co-Investigators: |
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Project Partners: |
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Department: |
Physics |
Organisation: |
University of Warwick |
Scheme: |
Standard Research (Pre-FEC) |
Starts: |
01 October 2002 |
Ends: |
31 October 2005 |
Value (£): |
236,479
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EPSRC Research Topic Classifications: |
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EPSRC Industrial Sector Classifications: |
Chemicals |
No relevance to Underpinning Sectors |
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Related Grants: |
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Panel History: |
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Summary on Grant Application Form |
The object of this study is to extend the method of scanned-energy mode photoelectron diffraction, developed by the applicant in a Warwick-Berlin collaboration, to the solution of increasingly relevant and challenging model surface adsorption systems, exploiting the enhanced spectral resolution and associated chemical-state specific structural information from undulator sources of synchrontron radiation at BESSY II and the NSLS. One new direction is to determine the structure of simple molecular adsorbates on oxide surfaces, notably NiO and MgO; our first such recent studies have exposed major failings of current theoretical descriptions of some of these systems, but only with quantitative experimental structural data can such theories be seriously challenged. It is also proposed to tackle the problem of the local structure of adsorbates at surface defect sites, a problem of great potential chemical significance; this will be done through the use of vicinal metal surfaces and oxide surfaces on which differences in the photoelectron binding energy are associated with different local sites. A similar approach will be used to elucidate some classic but ill-understood problems in multiple site occupation of single species on singular metal surfaces. Using a variable polarisation undulator it is also planned to explore novel polarisation geometries to tackle the problem of determining surface structures on the weakly electron-backscattering surfaces of Pt.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
Description |
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Summary |
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Date Materialised |
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Sectors submitted by the Researcher |
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Project URL: |
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Further Information: |
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Organisation Website: |
http://www.warwick.ac.uk |