Planar laser-induced fluorescence (PLIF) is a non-intrusive technique for measuring scalar
concentrations in fluid flows. A fluorescent dye is used as a scalar proxy, and local …

The microfluidic devices have recently attracted tremendous interest due to their potential of
bringing novel applications into reality in many areas including biomedical industry …

A lab-on-a-chip device is a microscale laboratory on a credit-card sized glass or plastic chip
with a network of microchannels, electrodes, sensors and electronic circuits. These labs on a …

The present work is an analytical and experimental study of electroosmotic flow (EOF) in
cylindrical capillaries with nonuniform wall surface charge (ζ-potential) distributions. In …

Time-accurate velocity measurements in unseeded air are made by tagging nitrogen with a
femtosecond-duration laser pulse and monitoring the displacement of the molecules with a …

Long-lasting emission from femtosecond excitation of nitrogen-based flows shows promise
as a useful mechanism for a molecular tagging velocimetry instrument. The technique …

A new tool for imaging both scalar transport and velocity fields in liquid flows through
microscale structures is described. The technique employs an ultraviolet laser pulse to write …

Advances in microfluidic and nanofluidic technologies have been paralleled by advances in
methods for direct optical measurement of transport phenomena on these scales. A variety …

Electroosmotic flow with Joule heating effects was examined numerically and experimentally
in this work. We used a fluorescence-based thermometry technique to measure the liquid …

A direct spatial image correlation technique is presented for estimating the Lagrangian
displacement vector from image pairs based on molecular tagging diagnostics. The …