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SUMMARY:Controlling Slippage\, Splashing and Viscous-Fingering 
DTSTART:20140327T151500
DTEND:20140327T161500
DTSTAMP:20260916T043420Z
UID:c9a452a32f702c697523792b0808eba77d053f98f11e865a9ed75beb
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Peichun Amy Tsai\, University of Twente\, The Netherlands\n
 Bio: Dr Peichun Amy Tsai obtained her PhD degree in November 2007 from the
  University of Toronto in Canada. Subsequently\, Dr. Tsai was a Postdoctor
 al Researcher working with Prof. Detlef Lohse\, in the Physics of Fluids G
 roup at the University of Twente in the Netherlands. She then moved to the
  US\, working with Prof. Howard Stone as a Postdoctoral Research Associate
 \, in the group of Complex Fluids in the Department of Mechanical Engineer
 ing at Princeton University. She recently joined the University of Twente 
 as an Assistant Professor\, in the group of Soft matter\, Fluidics and Int
 erfaces. Her recent research focuses on both micro-and-macro interfacial a
 nd fluid problems associated with environmental and energy applications.\n
 Abstract : In this talk\, I will demonstrate how to alter macroscopic flow
 s via interfacial modifications at micro scales\, highlighting associated 
 energy applications. Three flow scenarios are scrutinized and presented\, 
 namely microfluidic flow\, drop impact\, and macroscopic fluid-fluid displ
 acement. In microfluidic laminar flow\, our pore-scale measurements reveal
  that the geometry of the liquid-gas interface strongly influences the hyd
 rodynamic slippage\, i.e.\, drag reduction\, using hydrophobic micro-struc
 tures. In drop impact on a solid substrate\, the impact outcomes can be tu
 ned by varying the microstructures of the surface. In a large-scale flow c
 onfiguration\, a viscous-fingering in a Hele-Shaw cell—a convenient fram
 ework for modeling a homogeneous porous medium—can be controlled through
  a capillary effect. From these results\, we learn that the interfacial co
 nditions play an important role\, thereby offering strategic controls of f
 low behaviors.
LOCATION:ME B1 10 http://plan.epfl.ch/?room=MEB110
STATUS:CONFIRMED
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