Electrospray deposition from AFM probes with nanoscale apertures

J. Geerlings, Edin Sarajlic, Johan W. Berenschot, Remco G.P. Sanders, Leon Abelmann, Niels Roelof Tas

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)
4 Downloads (Pure)

Abstract

Electrospray deposition utilizes a high electric field to extract liquid droplets from a capillary nozzle. In this contribution we demonstrate non-contact droplet deposition by electrospray from atomic force microscopy (AFM) probes with a fully integrated microfluidic system, so called FluidFM probes. Electrospray experiments were performed using probes with a pyramidal tip with a sub-micron size aperture in a dedicated setup. The onset voltage as function of the gap between the probe tip and the substrate was measured and compared with a numerical model. Onset voltages in the range 360-410 V were found at 8.5 μm gap height. We observed a reduction in onset voltage with an increase in external pressure. Wetting of the outside of the tip could be reduced by applying a fluorocarbon coating.
Original languageUndefined
Title of host publication27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014
Place of PublicationSan Francisco
PublisherIEEE
Pages100-103
Number of pages4
ISBN (Print)978-1-4799-3508-6
DOIs
Publication statusPublished - 26 Jan 2014
Event27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014 - San Francisco, United States
Duration: 26 Jan 201430 Jan 2014
Conference number: 27

Publication series

Name
PublisherIEEE

Conference

Conference27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014
Abbreviated titleMEMS
Country/TerritoryUnited States
CitySan Francisco
Period26/01/1430/01/14

Keywords

  • EWI-24827
  • Nano Fountain Pen
  • Liquid Deposition
  • METIS-304123
  • IR-91352
  • Atomic Force Microscopy
  • Electrospray

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