Shaped composite liquid marbles

Edward Bormashenko; Revital Balter; Hadas Aharoni; Doron Aurbach

doi:10.1016/j.jcis.2013.11.036

Shaped composite liquid marbles

J Colloid Interface Sci. 2014 Mar 1:417:206-9. doi: 10.1016/j.jcis.2013.11.036. Epub 2013 Nov 20.

Authors

Edward Bormashenko¹, Revital Balter², Hadas Aharoni³, Doron Aurbach⁴

Affiliations

¹ Ariel University, Physics Faculty, P.O.B. 3, 40700 Ariel, Israel; Ariel University, Chemical Engineering and Biotechnology Department, P.O.B. 3, 40700 Ariel, Israel. Electronic address: edward@ariel.ac.il.
² Ariel University, Chemical Engineering and Biotechnology Department, P.O.B. 3, 40700 Ariel, Israel; Department of Chemistry, Bar-Ilan University, 52900 Ramat-Gan, Israel.
³ Ariel University, Chemical Engineering and Biotechnology Department, P.O.B. 3, 40700 Ariel, Israel.
⁴ Department of Chemistry, Bar-Ilan University, 52900 Ramat-Gan, Israel.

PMID: 24407678
DOI: 10.1016/j.jcis.2013.11.036

Abstract

Shaped "cubic" non-stick droplets are reported. Shaped composite droplets were manufactured via a two-stage process. In the first stage, cubic foamed-polystyrene particles were hydrophilized with cold radiofrequency plasma. Then particles were wetted with water. In the second stage, they were coated with solid, colloidal particles such as lycopodium, Teflon or carbon black. Thus, "liquid marble"-like non-stick shaped droplets were obtained. The shaped "cubic" droplets remained stable when supported by a NaCl water solution. Shaped Janus droplets coated on one side with dielectric Teflon and with semiconductor carbon black on the other side, were prepared. Janus marbles were actuated with an electric field.

Keywords: Actuation with electrical field; Janus marbles; Liquid marbles; Plasma-treated foamed polystyrene; Shaped droplets.