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Creation of Nanopatterns by Local Protonation of P4VP via Dip Pen Nanolithography
Journal of Applied Physics
  • Carsten Maedler, Portland State University
  • S. Chada, Portland State University
  • Xiquan Cui, Portland State University
  • M. Taylor, Portland State University
  • Mingdi Yan, Portland State University
  • Andres H. La Rosa, Portland State University
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Publication Date
  • Nanostructures,
  • Proton transfer reactions,
  • Buffer solutions
The elastic mechanical response of a poly(4-vinylpyridine) film is exploited to create nanostructures under ambient conditions via dip pen nanolithography. Using a pH 4 phosphate buffer solution as the "ink," a series of experimental results indicates that the nanometer-sized structures are due to local swelling of the film’s pyridyl groups upon their protonation with the hydronium ions delivered by the tip. Control over the structures’ height is gained by properly selecting the writing velocities or the dwell time, respectively.

Article appears in Journal of Applied Physics ( and is copyrighted (2008) by the American Institute of Physics, and can be found at: This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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Citation Information
Maedler, C. C., Chada, S. S., Cui, X. X., Taylor, M. M., Yan, M. M., & La Rosa, A. A. (2008). Creation of nanopatterns by local protonation of P4VP via dip pen nanolithography. Journal Of Applied Physics, 104(1), 014311.