Phase of molecular ink in nanoscale direct deposition processes

Narae Cho, Seol Ryu, Byeongju Kim, George C. Schatz, Seunghun Hong

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


We report the first observation of a phase transition in a nanoscale direct deposition process. This transition involves the melting of molecular ink layers in dip-pen nanolithography, and it is observed by measuring the temperature dependence of the growth rate of the deposited pattern. The results are interpreted using a diffusion equation approach in conjunction with a "double-molecular-layer" model of the adsorbed molecules on the atomic force microscope tip. The theory provides a qualitative explanation for the dependence of the pattern growth rate on solvent and adsorbed water as well as on temperature.

Original languageEnglish
Article number024714
JournalJournal of Chemical Physics
Issue number2
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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