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Research Article | Open Access

Electrocondensation and Evaporation of Attoliter Water Droplets: Direct Visualization Using Atomic Force Microscopy

Narendra Kurra1, Adina Scott2, Giridhar U. Kulkarni1( )
Chemistry and Physics of Materials Unit and DST Unit on NanoscienceJawaharlal Nehru Centre for Advanced Scientific ResearchJakkur POBangalore560 064India
Birck Nanotechnology CenterPurdue UniversityWest LafayetteIndiana47907USA
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Abstract

Working with a biased atomic force microscope (AFM) tip in the tapping mode under ambient atmosphere, attoliter (10−18 L) water droplet patterns have been generated on a patterned carbonaceous surface. This is essentially electrocondensation of water leading to charged droplets, as evidenced from electrostatic force microscopy measurements. The droplets are unusual in that they exhibit a highly corrugated surface and evaporate rather slowly, taking several tens of minutes.

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Keywords

Electrocondensationattoliter water dropletsbiased atomic force microscope (AFM) lithographyelectron beam induced depositioncarbonaceous deposition

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Nano Research
Volume 3 Issue 5,
May 2010
Pages 307-316
DOI: 10.1007/s12274-010-1034-0

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Cite this article:
Kurra N, Scott A, Kulkarni GU. Electrocondensation and Evaporation of Attoliter Water Droplets: Direct Visualization Using Atomic Force Microscopy. Nano Research, 2010, 3(5): 307-316. https://doi.org/10.1007/s12274-010-1034-0

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Received: 01 February 2010
Revised: 01 March 2010
Accepted: 01 March 2010
Published: 01 May 2010
© The Author(s) 2010

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.