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  • Title: Phase of molecular ink in nanoscale direct deposition processes.
    Author: Cho N, Ryu S, Kim B, Schatz GC, Hong S.
    Journal: J Chem Phys; 2006 Jan 14; 124(2):024714. PubMed ID: 16422633.
    Abstract:
    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.
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