Microbubble flows in superwettable fluidic channels

Electrokinetic molecular separation in nanoscale fluidic channels.

This report presents a study of electrokinetic transport in a series of integrated macro- to nano-fluidic chips that allow for controlled injection of molecular mixtures into high-density arrays of nanochannels. The high-aspect-ratio nanochannels were fabricated on a Si wafer using interferometric lithography and standard semiconductor industry processes, and are capped with a transparent Pyrex...

Single Cell Microinjection Using Compliant Fluidic Channels

We present a fully scalable cell injection system in a lab on a chip format that allows for on-chip cell pre-processing, injection and post-processing. Injection is performed by an integrated microneedle which is actuated by the compliant deformation of the PDMS (polydimethylsiloxane) fluidic channel by a single axis actuator. The needle actuation is 90.9% of the applied displacement. The cells...

Micro-Fluidic Channels with Integrated Ultrasonic Transducers

This paper describes the work done in an attempt to integrate ultrasonic sensors in micro-fluidic channels. We have developed a system with fluidic channels having embedded zinc oxide transducers. A zinc oxide film is deposited on a glass substrate and is sandwiched between two electrodes. The transducers made are found to resonate at 400 MHz in thickness mode. The channels are made both from P...

developing turbulent flows in rectangular channels: a parametric study

the developing turbulent flow in an open channel is a complex three-dimensional flow influenced by the secondary currents and free surface effects and is, therefore, not amenable to analytical solution. this paper aims to study the impact of three key hydraulic parameters (relative roughness, the froude number and the reynolds number) on the establishment length using computational fluid dynami...

Enhanced ac electrothermal fluidic pumping in microgrooved channels