Langmuir monolayers of co nanoparticles and their patterning by microcontact printing

Jong Il Park, Woo Ram Lee, Sung Soo Bae, Youn Joong Kim, Kyung Hwa Yoo, Jinwoo Cheon, Sehun Kim

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

In this paper, we describe an easy and reliable method for the production of patterned monolayers of Co nanoparticles. A two-dimensional monolayer of Co nanoparticles is fabricated by spreading a nanoparticle solution over an air-water interface and then transferring it to a hydrophobic substrate by using the Langmuir-Blodgett (LB) method. Transmission electron microscopy (TEM) was used to show that, with increasing surface pressure, the Co nanoparticles become well-organized into a Langmuir monolayer with a hexagonal close-packed structure. By controlling the pH of the subphase, it was found that a monolayer of Co nanoparticles with long-range order could be obtained. Further, by transferring the Langmuir monolayer onto a poly-(dimethoxysilane) (PDMS) mold, the selective micropatterning of the Co nanoparticles could be achieved on a patterned electronic circuit. The electronic transport properties of the Co nanoparticles showed the ohmic I-V curve.

Original languageEnglish
Pages (from-to)13119-13123
Number of pages5
JournalJournal of Physical Chemistry B
Volume109
Issue number27
DOIs
Publication statusPublished - 2005 Jul 14

All Science Journal Classification (ASJC) codes

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

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