title: Graphoepitaxy for pattern multiplication of nanoparticle monolayers.
abstract: We compute the free energy minimizing structures of particle monolayers in the presence of enthalpic barriers of a finite height βV(ext) using classical density functional theory and Monte Carlo simulations. We show that a periodic square template with dimensions up to at least 10 times the particle diameter disrupts the formation of the entropically favored hexagonally close-packed 2D lattice in favor of a square lattice. The results illustrate how graphoepitaxy can successfully order nanoparticulate films into desired patterns many times smaller than those of the prepatterned template.
authors.affiliation: McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA.
authors.forename: Mark E
authors.initials: ME
authors.lastname: Ferraro
authors.affiliation: McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA.
authors.forename: Roger T
authors.initials: RT
authors.lastname: Bonnecaze
authors.affiliation: McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA.
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Truskett