Diverse two-dimensional arrays of PNIPAM beads formed by spin-coating

Avishay Pelah*, Thomas M. Jovin, Igal Szleifer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Two-dimensional arrays of thermosensitive poly(N-isopropylacrylamide) colloids were formed by spin-coating. The addition of the surfactant sodium dodecylsulfate to bead suspensions led to the formation of a variety of ordered arrays. A mechanism explaining the final shape and bead density of the arrays is proposed, taking into account the interplay between the different interactions presented in the process, including depletion, capillary and electrostatic forces.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume299
Issue number1-3
DOIs
StatePublished - May 15 2007

Keywords

  • Array
  • Beads
  • Capillary forces
  • Depletion forces
  • PNIPAM
  • Spin-coating

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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