Electrocondensation and evaporation of attoliter water droplets: Direct visualization using atomic force microscopy
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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.
KeywordsElectrocondensation attoliter water droplets biased atomic force microscope (AFM) lithography electron beam induced deposition carbonaceous deposition
12274_2010_1034_MOESM1_ESM.pdf (1.1 mb)
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2010