Difference between revisions of "Non-Linear Dynamics of a Flow-Focusing Bubble Generator: An Inverted Dripping Faucet"

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(New page: Physical Review Letters [0031-9007] P. Garstecki, M.J. Fuerstman, G. M. Whitesides (2005) vol:94 iss:23 pg:234502[http://prola.aps.org.ezp-prod1.hul.harvard.edu/abstract/PRL/v94/i23/e23450...)
 
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Physical Review Letters [0031-9007] P. Garstecki, M.J. Fuerstman, G. M. Whitesides (2005) vol:94 iss:23 pg:234502[http://prola.aps.org.ezp-prod1.hul.harvard.edu/abstract/PRL/v94/i23/e234502]
 
Physical Review Letters [0031-9007] P. Garstecki, M.J. Fuerstman, G. M. Whitesides (2005) vol:94 iss:23 pg:234502[http://prola.aps.org.ezp-prod1.hul.harvard.edu/abstract/PRL/v94/i23/e234502]
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===Brief Summary===
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[[Image:nonlinear.jpg|thumb|Figure 1: Schematic of the flow focusing device.]]
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[[Image:nonlinear1.jpg|thumb|Figure 2: Schematic of the flow focusing device.]]
  
 
This letter deals with the chaotic behaviour of a microfluidic bubble  generator (the device reported in [http://soft-matter.seas.harvard.edu/index.php/Formation_of_Monodisperse_Bubbles_in_a_Microfluidic_Flow-Focusing_Device]).  Briefly, a gaseous thread is forced through a small orifice while being squeezed by an outer liquid flow; the thread then becomes energetically unstable which results in a bubble being pinched off.  Upon varying various parameters of the system such as the gas pressure and liquid flow rate, several bifurcations in the bubble producing behaviour are observed.
 
This letter deals with the chaotic behaviour of a microfluidic bubble  generator (the device reported in [http://soft-matter.seas.harvard.edu/index.php/Formation_of_Monodisperse_Bubbles_in_a_Microfluidic_Flow-Focusing_Device]).  Briefly, a gaseous thread is forced through a small orifice while being squeezed by an outer liquid flow; the thread then becomes energetically unstable which results in a bubble being pinched off.  Upon varying various parameters of the system such as the gas pressure and liquid flow rate, several bifurcations in the bubble producing behaviour are observed.

Revision as of 03:35, 24 February 2009

Physical Review Letters [0031-9007] P. Garstecki, M.J. Fuerstman, G. M. Whitesides (2005) vol:94 iss:23 pg:234502[1]

Brief Summary

Figure 1: Schematic of the flow focusing device.
Figure 2: Schematic of the flow focusing device.

This letter deals with the chaotic behaviour of a microfluidic bubble generator (the device reported in [2]). Briefly, a gaseous thread is forced through a small orifice while being squeezed by an outer liquid flow; the thread then becomes energetically unstable which results in a bubble being pinched off. Upon varying various parameters of the system such as the gas pressure and liquid flow rate, several bifurcations in the bubble producing behaviour are observed.