A viscous solvent laminar flow may be strongly modified by the addition of a tiny amount of
long polymer molecules, resulting in a chaotic flow called elastic turbulence (ET). ET is …

In the past two decades, microfluidics‐based particle production is widely applied for
multiple biological usages. Compared to conventional bulk methods, microfluidic‐assisted …

Viscoelastic fluids are a common subclass of rheologically complex materials that are
encountered in diverse fields from biology to polymer processing. Often the flows of …

Mixing of complex fluids at low Reynolds number is fundamental for a broad range of
applications, including materials assembly, microfluidics, and biomedical devices. Of these …

Turbulence is ubiquitous in nature, yet even for the case of ordinary Newtonian fluids like
water, our understanding of this phenomenon is limited. Many liquids of practical importance …

Microscopic flows are almost universally linear, laminar, and stationary because the
Reynolds number, Re, is usually very small. That impedes mixing in microfluidic devices …

Turbulence is commonly viewed as a type of macroflow, where the Reynolds number (Re)
has to be sufficiently high. In microfluidics, when Re is below or on the order of 1 and fast …

Turbulent flows have been used for millennia to mix solutes; a familiar example is stirring
cream into coffee. However, many energy, environmental, and industrial processes rely on …

We discuss the role of elastic stress in the statistical properties of elastic turbulence, realized
by the flow of a polymer solution between two disks. The dynamics of the elastic stress are …

Flow instabilities are well known to occur in macroscopic flows when elastic fluids flow along
curved streamlines. In this work we use flow visualization to study the mechanism underlying …