Breakup dynamics and dripping-to-jetting transition in a Newtonian/shear-thinning multiphase microsystem.

Fluctuation-induced dynamics of multiphase liquid jets with ultra-low interfacial tension Fascinating jet morphologies are observed in perturbation-induced dripping-to-jetting transition in multiphase liquid systems characterized by ultra-low interfacial tensions

Liquid jet breakup and subsequent droplet dynamics under normal gravity and in microgravity conditions

We present an experimental study on the characteristics of liquid jets in different configurations. We consider jets injected perpendicular to gravity, jets injected parallel to gravity, and jets injected in a microgravity environment. We study the role played by gravity in the jet breakup length and in the dynamics of the droplets generated after breakup. We analyze droplets obtained in the dr...

Extensional Relaxation Times of Dilute, Aqueous Polymer Solutions

We show that visualization and analysis of capillary-driven thinning and pinch-off dynamics of the columnar neck in an asymmetric liquid bridge created by dripping-onto-substrate can be used for characterizing the extensional rheology of complex fluids. Using a particular example of dilute, aqueous PEO solutions, we show the measurement of both the extensional relaxation time and extensional vi...

Synthesis of Functional Materials by Non-Newtonian Microfluidic Multiphase System

With increasing level of polymer solution involvement in multiphase microdevice for for‐ mation of emulsion and fabrication of functional materials, it is of paramount importance to systematically understand the relevant physics of droplet formation in non-Newtonian fluids and how the material formation process may be affected due to the complex rheo‐ logical effect. The chapter aims to review ...

Dripping and Jetting in Coflowing liquid Streams

Drop formation and dripping and jetting phenomena occur in an extremely large variety of situation, spanning a broad range of physical length scales. In this paper, we study the dynamics of dripping-to-jetting transition for two immiscible coflowing liquid streams numerically. Two different classes of transition are identified. In both cases, nonlinear dynamical phenomena such as period doublin...