Entropically driven colloidal crystallization on patterned surfaces

K H Lin, J C Crocker, V Prasad, A Schofield, D A Weitz, T C Lubensky, A G Yodh

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We investigate the self-assembly of colloidal spheres on periodically patterned templates. The surface potentials and the surface phases are induced entropically by the presence of dissolved, nonadsorbing polymers. A rich variety of two-dimensional fluidlike and solidlike phases was observed to form on template potentials with both one- and two-dimensional symmetry. The same methodology was then used to nucleate an oriented single fee crystal more than 30 layers thick. The general approach provides a new route for directed self-assembly of novel mesoscopic structures.

Original languageEnglish
Pages (from-to)1770-1773
Number of pages4
JournalPhysical Review Letters
Volume85
Issue number8
DOIs
Publication statusPublished - 21 Aug 2000

Keywords / Materials (for Non-textual outputs)

  • PHOTONIC CRYSTALS
  • PHASE-BEHAVIOR
  • SUSPENSIONS
  • PARTICLES
  • SPHERES
  • MIXTURE

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