Impact of a Viscous Liquid Drop (2009)
Schroll, Robert D., Josserand, Christophe, Zaleski, Stéphane, Zhang, Wendy W.
We simulate the impact of a viscous liquid drop onto a smooth dry solid surface. As in experiments, when ambient air effects are negligible, impact flattens the falling drop without producing a...
Laser microfluidics: fluid actuation by light (2009)
Delville, Jean-Pierre, Schroll, Robert D., Chraibi, Hamza, Issenmann, B., Wunenburger, Régis, ...
The development of microfluidic devices is still hindered by the lack of robust fundamental building blocks that constitute any fluidic system. An attractive approach is optical actuation because...
Asymmetric bubble disconnection: persistent vibration evolves into smooth contact (2009)
Turitsyn, Konstantin S., Lai, Lipeng, Zhang, Wendy W.
Focusing a finite amount of energy dynamically into a vanishingly small amount of material requires that the initial condition be perfectly symmetric. In reality, imperfections are always present and...
Laser microfluidics: fluid actuation by light (2009)
Delville, Jean-Pierre, Schroll, Robert D., Chraibi, Hamza, Issenmann, B., Wunenburger, Régis, ...
The development of microfluidic devices is still hindered by the lack of robust fundamental building blocks that constitute any fluidic system. An attractive approach is optical actuation because...
Laser microfluidics: fluid actuation by light (2009)
Delville, Jean-Pierre, Schroll, Robert D., Chraibi, Hamza, Issenmann, B., Wunenburger, Régis, ...
The development of microfluidic devices is still hindered by the lack of robust fundamental building blocks that constitute any fluidic system. An attractive approach is optical actuation because...
Bridging dielectric fluids by light: a ray optics approach (2008)
Schroll, Robert D., Brasselet, Etienne, Zhang, Wendy W., Delville, Jean-Pierre
Rayleigh-Plateau instability is known to impose a stability limit for the length of a liquid bridge in weightless conditions. This fundamental limit may be exceeded by using a light field to form and...
Bridging dielectric fluids by light: a ray optics approach (2008)
Schroll, Robert D., Brasselet, Etienne, Zhang, Wendy W., Delville, Jean-Pierre
Rayleigh-Plateau instability is known to impose a stability limit for the length of a liquid bridge in weightless conditions. This fundamental limit may be exceeded by using a light field to form and...
Viscous Withdrawal of Miscible Liquid Layers (2007)
Schmidt, Laura E., Zhang, Wendy W.
In viscous withdrawal, a converging flow imposed in an upper layer of viscous liquid entrains liquid from a lower, stably stratified layer. Using the idea that a thin tendril is entrained by a local...
Liquid Transport Due to Light Scattering (2007)
Schroll, Robert D., Wunenburger, Régis, Casner, Alexis, Zhang, Wendy W., Delville, Jean-Pierre
Using experiments and theory, we show that light scattering by inhomogeneities in the index of refraction of a fluid can drive a large-scale flow. The experiment uses a near-critical, phase-separated...
Liquid Transport Due to Light Scattering (2006)
Schroll, Robert D., Wunenburger, Régis, Casner, Alexis, Zhang, Wendy W., Delville, Jean-Pierre
Using experiments and theory, we show that light scattering by inhomogeneities in the index of refraction of a fluid can drive a large-scale flow. The experiment uses a near-critical, phase-separated...
Breakup of Air Bubbles in Water: Memory and Breakdown of Cylindrical Symmetry (2006)
Keim, Nathan C., Moller, Peder, Zhang, Wendy W., Nagel, Sidney R.
Using high-speed video, we have studied air bubbles detaching from an underwater nozzle. As a bubble distorts, it forms a thin neck which develops a singular shape as it pinches off. As in other...
Berkenbusch, Marko Kleine, Cohen, Itai, Zhang, Wendy W.
This paper presents a numerical analysis of the transition from selective withdrawal to viscous entrainment. In our model problem, an interface between two immiscible layers of equal viscosity is...
Drop Splashing on a Dry Smooth Surface (2005)
Xu, Lei, Zhang, Wendy W., Nagel, Sidney R.
The corona splash due to the impact of a liquid drop on a smooth dry substrate is investigated with high speed photography. A striking phenomenon is observed: splashing can be completely suppressed...
Breakup: The Breakdown of Universality (1997)
K. J. Friston, C. D. Frith, Hum Brain, D. J. Veltman, S. A. Rombouts, ...
A low-viscosity drop breaking apart inside a viscous fluid is encountered when air bubbles, entrained in thick syrup or honey, rise and break apart. Experiments, simulations, and theory show that the...