Reversible control of free energy and topography of nanostructured surfaces.


Journal Article

We describe a facile method for the formation of dynamic nanostructured surfaces based on the modification of porous anodic aluminum oxide with poly(N-isopropyl acrylamide) (PNIPAAm) via surface-initiated atom transfer radical polymerization. The dynamic structure of these surfaces was investigated by atomic force microscopy (AFM), which showed dramatic changes in the surface nanostructure above and below the aqueous lower critical solution temperature of PNIPAAm. These changes in surface structure are correlated with changes in the macroscopic wettability of the surfaces, which was probed by water contact angle measurements. Principal component analysis was used to develop a quantitative correlation between AFM image intensity histograms and macroscopic wettability. Such correlations and dynamic nanostructured surfaces may have a variety of uses.

Full Text

Cited Authors

  • Fu, Q; Rama Rao, GV; Basame, SB; Keller, DJ; Artyushkova, K; Fulghum, JE; López, GP

Published Date

  • July 1, 2004

Published In

Volume / Issue

  • 126 / 29

Start / End Page

  • 8904 - 8905

PubMed ID

  • 15264815

Pubmed Central ID

  • 15264815

Electronic International Standard Serial Number (EISSN)

  • 1520-5126

International Standard Serial Number (ISSN)

  • 0002-7863

Digital Object Identifier (DOI)

  • 10.1021/ja047895q


  • eng