title: Nonlinear dynamics of a flow-focusing bubble generator: an inverted dripping faucet.
abstract: We describe the rich dynamic behavior--including period-doubling and period-halving bifurcations, intermittency, and chaos--observed in the breakup of an inviscid fluid in a coflowing, viscous liquid, both confined in a microfabricated flow-focusing geometry. Experimental observations support inertia-dominated dynamics of the interface, and suggest the possible similarity to the dynamics of a topologically inverted counterpart of this system, that is, a dripping faucet.
authors.affiliation: Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA. pgarstecki@gmwgroup.harvard.edu
authors.forename: Piotr
authors.initials: P
authors.lastname: Garstecki
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Fuerstman
authors.forename: George M
authors.initials: GM
authors.lastname: Whitesides