We demonstrate microscopic fluidic control and memory elements through the use of an
aqueous viscoelastic polymer solution as a working fluid. By exploiting the fluid's non-…

The mating pathway in Saccharomyces cerevisiae has been the focus of considerable
research effort, yet many quantitative aspects of its regulation still remain unknown. Using an …

Bacteria and yeast frequently exist as populations capable of reaching extremely high cell
densities. With conventional culturing techniques, however, cell proliferation and ultimate …

We designed, fabricated, and tested a microfluidic device for separation of plasma from whole
human blood by size exclusion in a cross-flow. The device is made of a single mold of a …

It is one of the basic concepts of Newtonian fluid dynamics that at low Reynolds number (Re)
the Navier-Stokes equation is linear and flows are reversible. In microfluidic devices, where …

Turbulence is a ubiquitous phenomenon that is not fully understood. It is known that the flow
of a simple, newtonian fluid is likely to be turbulent when the Reynolds number is large (…

Colonies of bacterial cells can display complex collective dynamics, frequently culminating in
the formation of biofilms and other ordered super-structures. Recent studies suggest that to …

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

We describe the design, fabrication, and operation of two types of flow cytometers based on
microfluidic devices made of a single cast of poly(dimethylsiloxane). The stream of particles …

Most leukocytes can roll along the walls of venules at low shear stress (1 dyn cm −2 ), but
neutrophils have the ability to roll at tenfold higher shear stress in microvessels in vivo 1 , 2 . …