Direct Measurements of Island Growth and Step-Edge Barriers in Colloidal Epitaxy
KAUST Grant NumberKUS-C1-018-02
Permanent link to this recordhttp://hdl.handle.net/10754/597987
MetadataShow full item record
AbstractEpitaxial growth, a bottom-up self-assembly process for creating surface nano- and microstructures, has been extensively studied in the context of atoms. This process, however, is also a promising route to self-assembly of nanometer- and micrometer-scale particles into microstructures that have numerous technological applications. To determine whether atomic epitaxial growth laws are applicable to the epitaxy of larger particles with attractive interactions, we investigated the nucleation and growth dynamics of colloidal crystal films with single-particle resolution. We show quantitatively that colloidal epitaxy obeys the same two-dimensional island nucleation and growth laws that govern atomic epitaxy. However, we found that in colloidal epitaxy, step-edge and corner barriers that are responsible for film morphology have a diffusive origin. This diffusive mechanism suggests new routes toward controlling film morphology during epitaxy.
CitationGanapathy R, Buckley MR, Gerbode SJ, Cohen I (2010) Direct Measurements of Island Growth and Step-Edge Barriers in Colloidal Epitaxy. Science 327: 445–448. Available: http://dx.doi.org/10.1126/science.1179947.
SponsorsWe thank L. Ristroph, J. Savage, T. Arias, J. Machta, and A. Woll for useful discussions. We would like to especially thank J. Sethna for helping us set up the numerical calculations for residence times. This research was supported by grants from the NSF Division of Materials Research, the Cornell NanoScale Science and Technology Facility, and in part by award no. KUS-C1-018-02 from King Abdullah University of Science and Technology (KAUST).
CollectionsPublications Acknowledging KAUST Support
- Weak epitaxy growth and phase behavior of planar phthalocyanines on p-sexiphenyl monolayer film.
- Authors: Wang T, Yang J, Wang H, Zhu F, Yan D
- Issue date: 2008 Jun 5
- Growth evolution of laser-ablated Sr(2)FeMoO(6) nanostructured films: Effects of substrate-induced strain on the surface morphology and film quality.
- Authors: Jalili H, Heinig NF, Leung KT
- Issue date: 2010 May 28
- Computer simulation of the epitaxy of surfactant-templated inorganic nanomaterials on patterned surfaces.
- Authors: Li Z, Zhang X, Chen B
- Issue date: 2009 Feb 17
- Characterization of step-edge barriers in organic thin-film growth.
- Authors: Hlawacek G, Puschnig P, Frank P, Winkler A, Ambrosch-Draxl C, Teichert C
- Issue date: 2008 Jul 4
- Visualizing dislocation nucleation by indenting colloidal crystals.
- Authors: Schall P, Cohen I, Weitz DA, Spaepen F
- Issue date: 2006 Mar 16