Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 252, Issue 1-3, Pages 262-264Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0304-8853(02)00687-X
Keywords
ferrofluids; sessile drop; contact angle; contact line; bifurcation; stability
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We study mechanisms of instabilities of rigidly rotating sessile ferrofluid drops in a DC magnetic field oriented parallel to rotation axis. The experiments and computations show that wetting affects both the stability limits and the breaking mechanism of a drop, which rotates with increasing angular velocity under constant magnetic field strength. It is demonstrated that fixing the contact angle or fixing the contact line makes a difference in the break up. (C) 2002 Elsevier Science B.V. All rights reserved.
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