Electric field controlled nanoscale contactless deposition using a nanofluidic scanning probe

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6 Citations (Scopus)

Abstract

A technique for contactless liquid deposition on the nanoscale assisted by an electric field is presented. By the application of a voltage between the liquid inside a (FluidFM) nanofountain pen AFM probe and a substrate, accurate contactless deposition is achieved. This technique allows for the deposition of polar liquids on non-wetting substrates. Sodium sulfate dried deposits indicate that the spot size and height increases with t$^{0.33±0.04}$ and t$^{0.35±0.10}$ , respectively. The minimum observed diameter was 70 nm. By measuring the probe deflection and the electric deposition current, we confirm that deposition is truly non-contact. We propose a simple model based on a constant stream of liquid to the substrate, which explains our observations qualitatively.
Original languageEnglish
Pages (from-to)123109
Number of pages4
JournalApplied physics letters
Volume107
Issue number12
DOIs
Publication statusPublished - 23 Sep 2015

Keywords

  • EWI-26425
  • IR-98199
  • METIS-315010

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