Electro-nanopatterning of surface relief gratings on azobenzene layer-by-layer ultrathin films by current-sensing atomic force microscopy

Akira Baba, Guoqian Jiang, Kang Min Park, Jin Young Park, Hoon Kyu Shin, Rigoberto Advincula

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15 Citations (Scopus)

Abstract

The electro-nanopatterning and mechanism of pattern formation in azobenzene-containing layer-by-layer (LbL) ultrathin films is described using surface probe microscopy techniques. First, arrays of nanodots were patterned on these films to investigate applied time at constant voltage bias dependence in electro-nanopatterning. The anisotropic mass transport and polar alignment of the azobenzene-containing films were observed after applying the electric field and heating the sample locally with the cantilever tip. On the basis of this novel phenomenon, small-sized surface relief gratings (SRG)s and their alignment were fabricated and observed by currentsensing atomic force microscopy. The rate of mass transport for the polymer is mainly controlled by the applied time at constant voltage bias between the cantilever and the electrode/substrate.

Original languageEnglish
Pages (from-to)17309-17314
Number of pages6
JournalJournal of Physical Chemistry B
Volume110
Issue number35
DOIs
Publication statusPublished - 2006 Sep 7
Externally publishedYes

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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