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Order-chaos-order transitions in electrosprays: the electrified dripping faucet

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Ioan Marginean, Peter Nemes, Akos Vertes

Editorial: Physical Review Letters, 97, p.064502, 2006.

Rezumat:

Electrosprays have diverse applications including protein analysis, electrospinning, and nanoencapsulation for drug delivery. We show that a variety of electrospray regimes exhibit fundamental analogy with the nonlinear dynamics of a dripping faucet. The applied voltage in electrosprays results in additional period doublings and temporal order-chaos-order transitions. Attractors in the return maps show logarithmic self-similarity in time, suggesting self-similar capillary waves on the meniscus. The bifurcations in ejection time can be explained by phase variations between capillary waves and pinch-off conditions and by ejection mode changes due to contact angle variations.

Cuvinte cheie: electrospray, chaos, nonlinear dynamics // electrospray, chaos, nonlinear dynamics

URL: http://dx.doi.org/10.1103/PhysRevLett.97.064502