Role of nonlinearities and initial prepatterned surfaces in nanobead formation by ion-beam bombardment of Au(001): experiments and theory

e-Archivo Repository

Show simple item record Kim, J.H. Kim, J.S. Muñoz-García, Javier Cuerno, Rodolfo 2015-12-21T10:44:52Z 2015-12-21T10:44:52Z 2013-02-15
dc.identifier.bibliographicCitation Physical Review B.Condensed matter and materials physics 87 (2013) 8 (085438)
dc.identifier.issn 1098-0121 (print)
dc.identifier.issn 1550-235X (online)
dc.description.abstract Au(001) surfaces that have been prepatterned into a rippled morphology develop one-dimensional nanodot arrays (nanobeads) selectively along the ripples when bombarded with energetic ions at an angle that is normal to the average surface orientation. By quantifying the shape and morphology of these arrays, we show experimentally and by numerical simulations of an extended Kuramoto-Sivashinsky equation that the degree of one-dimensional order of the nanobeads can be optimized by considering initial rippled surfaces with various wavelength and roughness values. Our simulations employ physical units and use the experimental topographies as initial conditions. Such nonideal shapes are key to elucidating the influence of nonlinear effects (like conformal interface motion and local redeposition) since the early stages of the dynamics for these prepatterned systems. In spite of the fact that the evolution of the surface morphology becomes far from trivial under these circumstances, our continuum model is able to reproduce the experimental results quantitatively, in contrast to relevant alternative models in the context of surface nanopatterning by ion-beam bombardment.
dc.description.sponsorship This work was supported by NRF (Korea) Grant No. 20100010481 by MICINN (Spain) Grant No. FIS2009-12964- C05-01 and by MEC (Spain) Grants No. FIS2012-32349 and No. FIS2012-38866-C05-01. J.M.-G. was supported by MICINN (Spain) under the Juan de la Cierva program.
dc.format.extent 8
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher American Physical Society
dc.rights © 2013 American Physical Society
dc.title Role of nonlinearities and initial prepatterned surfaces in nanobead formation by ion-beam bombardment of Au(001): experiments and theory
dc.type article
dc.description.status Publicado
dc.subject.eciencia Física
dc.subject.eciencia Matemáticas
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. FIS-2012-32349
dc.relation.projectID Gobierno de España. FIS-2012-38866-C05-01
dc.relation.projectID Gobierno de España. FIS-2009-12964-C05-01
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 8(085438)
dc.identifier.publicationlastpage 8
dc.identifier.publicationtitle Physical review. B. Condensed matter and materials physics
dc.identifier.publicationvolume 87
dc.identifier.uxxi AR/0000012873
 Find Full text

Files in this item

*Click on file's image for preview. (Embargoed files's preview is not supported)

This item appears in the following Collection(s)

Show simple item record