Ordered microdroplet formations of thin ferrofluid layer breakups

Ching-Yao Chen*, C. S. Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The ordered breakup pattern of a thin layer of ferrofluid drop subjected to a uniform perpendicular field is experimentally investigated. The results confirm a universal pattern formation containing numerous breaking droplets of a uniform size, which is independent of the initial area of ferrofluid drop and the propagating directions of the formation waves. Two quantitative observations regarding the size and number of breaking droplets are concluded. Both the experiments and theoretical analysis show the correlation between the diameter of breaking droplets (d) and magnetization strength (M) can be characterized as d∝1/M2. The uniform size of breaking droplets under a constant field strength results in a linear proportionality between the number of breaking droplets (N) and the initial area of ferrofluid drop (A) as N∝A, which is verified by the experiments.

Original languageEnglish
Article number001002PHF
Pages (from-to)1-6
Number of pages6
JournalPhysics of Fluids
Volume22
Issue number1
DOIs
StatePublished - 1 Jan 2010

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