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4 papers · 1 filter
Effect of impurities on pentacene island nucleation
B. R. Conrad, Elba Gomar-Nadal, W. G. Cullen +3
Pentacenequinone (PnQ) impurities have been introduced into a pentacene source material in a controlled manner to quantify the relative effects of the impurity content on grain bou…
Relaxation of Terrace-width Distributions: Physical Information from Fokker-Planck Time
Ajmi BH. Hamouda, Alberto Pimpinelli, T. L. Einstein
Recently some of us have constructed a Fokker-Planck formalism to describe the equilibration of the terrace-width distribution of a vicinal surface from an arbitrary initial config…
Impermeable Atomic Membranes from Graphene Sheets
J. Scott Bunch, Scott S. Verbridge, Jonathan S. Alden +4
We demonstrate that a monolayer graphene membrane is impermeable to standard gases including helium. By applying a pressure difference across the membrane, we measure both the elas…
Changing shapes in the nanoworld
Nicolas Combe, Pablo Jensen, Alberto Pimpinelli
What are the mechanisms leading to the shape relaxation of three dimensional crystallites ? Kinetic Monte Carlo simulations of fcc clusters show that the usual theories of equilibr…