Microparticle Image Velocimetry Archives

Applying Voltage to a Channel in a Microfluidic Chip

Platinum wire electrodes are commonly used to apply voltage to a fluidic channel. Although the approach is relatively simple, proper preparation of the electrode is very important to prevent field concentrations in the channels. Field concentrations can cause a multitude of problems, including bubble formation, cell lysing, localized heating, chemical reactions, and clogging of channels.

Improving Dielectrophoretic Concentrator

Sample preparation is a bottleneck for protein, cell and nucleic acid analysis, regardless of the analytical technique used. An important, and tedious, preparation step is selective concentration of the target of interest, particularly when target abundance is low. One approach is insulator-based dielectrophoresis, or iDEP, in which insulators, often etched in glass or stamped in … Read more