Dynamics of adsorbed islands with nanoscale resolution

Details Dynamics of adsorbed islands with nanoscale resolution Dynamics of adsorbed islands with nanoscale resolution

2001-10-19

arxiv.org/abs/cond-mat/0110409v1

J.Stat.Phys. 101, 621-629 (2000)

Physics

Condensed Matter

18 pages, 3 figures

Scientific paper

Surface catalytic processes produce, under certain conditions, small clusters of adsorbed atoms or groups, called {\em islands} which, after they have been formed, move as individual entities. Here we consider the catalytic reduction of NO with hydrogen on platinum. (i) Using video field ion microscopy, we observe the dynamic motion of small hydroxyl islands on the Pt(001) plane; despite changes in their morphology, the islands dimensions are confined to values corresponding to 10 to 30 Pt atoms suggesting cooperative effects to be in operation. (ii) We construct an automaton (or lattice Monte-Carlo) model on the basis of a set of elementary processes governing the microscopic dynamics. The agreement between the simulation results and the experimental observations suggests a possible mechanism for the formation and dynamics of hydroxyl islands.

Affiliated with

Also associated with

No associations

Rating

Dynamics of adsorbed islands with nanoscale resolution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamics of adsorbed islands with nanoscale resolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics of adsorbed islands with nanoscale resolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-212195