Controlling droplet incubation using close-packed plug flow

Controlling droplet incubation using close-packed plug flow.

Controlling droplet incubation is critical for droplet-based microfluidic applications; however, current techniques are either of limited precision or place strict limits on the incubation times that can be achieved. Here, we present a simple technique to control incubation time by exploiting close-packed plug flow. In contrast to other techniques, this technique is applicable to very short and...

New Tetrahedrally Close-Packed Structures

We consider mathematical models of foams and froths, as collections of surfaces which minimize area under volume constraints. Combinatorially, because of Plateau’s rules, a foam is dual to some triangulation of space. We examine the class of foams known as tetrahedrally close-packed (TCP) structures, which includes the one used by Weaire and Phelan in their counterexample to the Kelvin conjectu...

Beating Poisson encapsulation statistics using close-packed ordering.

Loading drops with discrete objects, such as particles and cells, is often necessary when performing chemical and biological assays in microfluidic devices. However, random loading techniques are inefficient, yielding a majority of empty and unusable drops. We use deformable particles that are close packed to insert a controllable number of particles into every drop. This provides a simple, fle...

Rate controlling processes in creep of close packed metals at intermediate and high temperatures

New microstructural rate controlling models for high temperature deformation are suggested which are in satisfactory agreement not only with activation parameter values but also with various metallographic observations. Non-compact slip in the HCP and FCC structures can be described by a kink pair mechanism. This process could control dislocation glide through subgrains, and therefore the creep...

The sintering behavior of close-packed spheres