The interfacial torque on a partially submerged sphere

Pushpendra Singh, Todd Hesla

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


For a heavy spherical particle floating at the surface of a liquid, we show that the resultant torque exerted on the particle about its center by the interfacial forces is always zero, regardless of the position and shape of the contact line, provided only that the interfacial tension and the contact angle are constant. Interfacial tension therefore cannot rotate a spherical particle about its center.

Original languageEnglish (US)
Pages (from-to)542-543
Number of pages2
JournalJournal of Colloid and Interface Science
Issue number2
StatePublished - Dec 15 2004

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