Browsing by Author "Wu, W. -L."

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Magnetically induced spreading and pattern selection in thin ferrofluid drops
(2010-11-17)
Chen, Ching-Yao
;
Wu, W. -L.
;
Miranda, Jose A.
;
機械工程學系
;
Department of Mechanical Engineering
We report an experimental study of a fingering pattern formation which occurs during the spreading of an immiscible thin ferrofluid drop subjected to a radial magnetic field. Our results indicate that this ferrohydro-dynamic system works as a magnetic analog of conventional spin coating, where centrifugal driving is replaced with a magnetic body force induced by the radial applied field. In this context, a magnetically tunable pattern selection mechanism is proposed in which the shape and number of the arising fingered structures can be properly controlled.
Magnetically induced spreading and pattern selection in thin ferrofluid drops
(2010-11-17)
Chen, Ching-Yao
;
Wu, W. -L.
;
Miranda, Jose A.
;
機械工程學系
;
Department of Mechanical Engineering
We report an experimental study of a fingering pattern formation which occurs during the spreading of an immiscible thin ferrofluid drop subjected to a radial magnetic field. Our results indicate that this ferrohydro-dynamic system works as a magnetic analog of conventional spin coating, where centrifugal driving is replaced with a magnetic body force induced by the radial applied field. In this context, a magnetically tunable pattern selection mechanism is proposed in which the shape and number of the arising fingered structures can be properly controlled.