P.C. Sousa

TL;DR: It is demonstrated that the elastic properties of the fluid have a major impact on the flow characteristics, with the polyacrylamide solution exhibiting a much stronger elastic character.

TL;DR: In this paper, the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) solution using T-shaped microchannels was investigated, where the stagnation point is located on a free streamline, whereas in the absence of a recirculating cavity the stagnation points at the separating streamline is pinned at the confining wall of the microchannel.

TL;DR: In this article, a new type of microfluidic rectifier was proposed to achieve high anisotropic flow resistance between the two flow directions, which is able to operate efficiently under creeping flow conditions.

TL;DR: In this article, the authors review recent experimental work on the topic of elastic instabilities in flows having a strong extensional component, including: flow through a hyperbolic contraction followed by a sudden expansion; flow in a microfluidic diode and in a flow focusing device; flow around a confined cylinder; flow through porous media and simplified porous media analogs.

TL;DR: Recent advances on OoC platforms, particularly on the preclinical validation of nanomaterials designed for cancer, as well as the current challenges and possible future directions for an end-use perspective are discussed.