On the nature of the friction between nonstick droplets and solid substrates

Edward Bormashenko, Yelena Bormashenko, Gendelman Oleg

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

The lateral rolling of nonstick water and glycerol droplets deposited on solid substrates inclined at the sliding angles was studied. Droplets deposited on lotuslike water-repellent surfaces and liquid marbles (powder-coated droplets) deposited on solid substrates demonstrated similar behavior. The motion of both droplets and marbles featured friction that is far from Amonton type. The sliding angles of nonstick drops are sensitive to the "history" of a drop on the substrate. The friction of glycerol marbles is governed by viscous dissipation, whereas the rolling of water marbles is dictated by adhesion forces acting within the contact area.

Original languageEnglish
Pages (from-to)12479-12482
Number of pages4
JournalLangmuir
Volume26
Issue number15
DOIs
StatePublished - 3 Aug 2010

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