Daniel A. Pearson
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View article: Intermediate morphology in the patterning of the crystalline Ge(001) surface induced by ion irradiation
Intermediate morphology in the patterning of the crystalline Ge(001) surface induced by ion irradiation Open
We investigate the morphologies of the Ge(001) surface that are produced by bombardment with a normally incident, broad argon ion beam at sample temperatures above the recrystallization temperature. Two previously observed kinds of topogra…
View article: An intermediate morphology in the patterning of the crystalline Ge(001) surface induced by ion irradiation
An intermediate morphology in the patterning of the crystalline Ge(001) surface induced by ion irradiation Open
We investigate the morphologies of the Ge(001) surface that are produced by bombardment with a normally incident, broad argon ion beam at sample temperatures above the recrystallization temperature. Two previously-observed kinds of topogra…
View article: Formation of square lattices in coupled pattern-forming systems
Formation of square lattices in coupled pattern-forming systems Open
A wide variety of natural and labo-ratory systems can produce patterns of ripples, hexagons, or squares. The formation of stable square patterns from partial differential equation models requires specific cubic nonlinearities involving hig…