Instantaneous Solidification of a Centrifuge-driven Capillary Jet with Controlled Hydrodynamic Instability in a Centrifuge-based Droplet Shooting Device through Observational Analysis

Observation and Manipulation of a Capillary Jet in a Centrifuge-Based Droplet Shooting Device

We report observation and manipulation of a capillary jet under ultra-high centrifugal gravity in a proposed capillary-based fluidic device for the synthesis of microparticles in a centrifugal tube called Centrifuge-Based Droplet Shooting Device (CDSD). Using a high-speed camera, we directly observed the dripping to jetting transition of a viscous capillary jet of water and Sodium alginate solu...

Numerical study on the jet dynamic through centrifuge spinning: influence of angular velocity

Compound jet instability in a microchannel for mononuclear compound drop formation

A mononuclear compound droplet generation system has been developed based on both the hydrodynamic flow focusing and the solvent exchange method. The results show that the current system provided excellent control over the jet diameters of individual fluid consisting of the compound jet and the resultant compound drop diameters. The compound droplets were controlled in the range of 46–90 μm. Th...

Plasma instability of a vacuum arc centrifuge.

Ever since conception of the vacuum arc centrifuge in 1980, periodic fluctuations in the ion saturation current and floating potential have been observed in Langmuir probe measurements in the rotation region of a vacuum arc centrifuge. In this work we develop a linearized theoretical model to describe a range of instabilities in the vacuum arc centrifuge plasma column, and then test the validit...

Operation of Droplet-Microfluidic Devices with a Lab Centrifuge

Microfluidic devices are valuable for a variety of biotechnology applications, such as synthesizing biochemical libraries, screening enzymes, and analyzing single cells. However, normally, the devices are controlled using specialized pumps, which require expert knowledge to operate. Here, we demonstrate operation of poly(dimethylsiloxane) devices without pumps. We build a scaffold that holds th...