Dip-pen nanolithography: What controls ink transport?

Sergey Rozhok, Richard Piner, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticle

181 Scopus citations

Abstract

The influence of temperature and humidity on the growth rates of 1-octadecanethiol (ODT) and 16-mercaptohexadecanoic acid (MHA) monolayers deposited onto a gold substrate has been systematically studied in the context of dip-pen nanolitography (DPN) experiments. By analyzing a statistically meaningful data set, we conclude that for both inks the deposition rate increases with increasing temperature, and that this temperature dependence is strongly affected by relative humidity, chemical nature of the ink and substrate, and writing speed. We attribute these observations to the different solubilities of the ink molecules in water (both the water in the meniscus and on the cantilever walls). In addition, we report a set of experiments that demonstrate meniscus formation even at 0% relative humidity due to residual water that moves to the point of contact between tip and sample.

Original languageEnglish (US)
Pages (from-to)751-757
Number of pages7
JournalJournal of Physical Chemistry B
Volume107
Issue number3
DOIs
StatePublished - Jan 23 2003

ASJC Scopus subject areas

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

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