Imaging surface topographical changes during plastic deformation of a metal 
with chemical wave patterns

Hartmann, Nils; Schaak, Andreas; Shaikhutdinov, Shamil; Imbihl, R.

doi:10.1016/j.susc.2003.10.050

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Imaging surface topographical changes during plastic deformation of a metal with chemical wave patterns

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Shaikhutdinov, Shamil
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Hartmann, N., Schaak, A., Shaikhutdinov, S., & Imbihl, R. (2004). Imaging surface topographical changes during plastic deformation of a metal with chemical wave patterns. Surface Science, 548(1-3), 163-169. doi:10.1016/j.susc.2003.10.050.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-0D9B-0

Abstract

A thin Pt(1 0 0) single crystal was bent across a wedge in a reacting NO, CO atmosphere at 10_5 mbar employing photoelectron emission microscopy (PEEM) as spatially resolving method. To visualize surface topographical changes during this plastic deformation chemical wave patterns in the NO + CO reaction were imaged with PEEM. Scanning electron microscopy (SEM) of the bent crystal was used to correlate changes in the wave patterns with topographical features. We observed a change in the apparent anisotropy of the surface, the development of spiral waves pinned to structural defects, and a breakup of the reacting surface into isolated domains of pattern formation.