title: Geometry-induced pulse instability in microdesigned catalysts: the effect of boundary curvature.
abstract: We explore the effect of boundary curvature on the instability of reactive pulses in the catalytic oxidation of on microdesigned Pt catalysts. Using ring-shaped domains of various radii, we find that the pulses disappear (decollate from the inert boundary) at a turning point bifurcation, and we trace this boundary in both physical and geometrical parameter space. These computations corroborate experimental observations of pulse decollation.
authors.affiliation: Department of Chemical Engineering, Princeton University, Princeton, NJ 08544, USA.
authors.forename: L
authors.initials: L
authors.lastname: Qiao
authors.forename: I G
authors.initials: IG
authors.lastname: Kevrekidis
authors.forename: C
authors.initials: C
authors.lastname: Punckt
authors.forename: H H
authors.initials: HH
authors.lastname: Rotermund