Micro & Bio Fluidics, Lab-on-Chip – Page 31

Computational Heat Transfer and Two-phase Flow in Miniature Tubes

We will report on our recent advances made in predicting this class of flow, using the Level Set approach, in which we have incorporated phase-change capabilities, surface tension and triple-line dynamics models based on the [...]

Experimental Visualization of Bubble Generation and Breakup in T-junctions of Microchannels

Zhang Y., Xiao Q., Cheng L., Wang L., The University of Hong Kong, HK

experimental visualization, bubble generation and breakup, T-junctions, microchannels

Microfluidic Device for Conventional and Traveling-Wave Dielectrophoresis

Kumar A., Acrivos A., Khusid B., James C.D., New Jersey Institute of Technology, US

Conventional and traveling-wave dielectrophoresis in suspensions are proven techniques for the manipulation, separation, and characterization of suspended particles with potential applications ranging from biological warfare agent detection to healthcare industry. In contrast to previous studies, [...]

Shape Oscillation and Internal Mixing in Sessile Liquid Drops using ElectroWetting-On-Dielectric (EWOD)

Miraghaie R., Sterling J.D., Nadim A., Keck Graduate Institute, US

We show that internal mixing within a sessile liquid drop can be significantly enhanced by means of so-called electrowetting-on-dielectric (EWOD), using an alternating electric potential. This is done experimentally by comparing the coalescence and mixing [...]

High-Throughput Screening Devices Based on Hydrophobic Microfluidics

Chen J.J., Yang H.J., Wu J.W., Parng S.H., Yu T.M., Industrial Technology Research Institute, TW

In this work, we developed a microfluidic assay for determination of the individual cell’s response to chemical exposure. Microfluidic chips comprisd four channels were fabricated on polystyrene (PS) substrates via mechanical milling processes, and covered [...]

Heat Transfer Cost-Effectiveness of Nanofluids

Xu D., Pan L., Yao Q., Institute og High Performance Computing, SG

When metal or oxide nano particles are dispersed in fluids to form nanofluids, the particles will improve the thermal conductivity of the fluids. Therefore, it is suggested to use nanofluids as coolant to improve heat-exchanger [...]

Full Coupling Simulation of a Membrane Micropump

Yao Q., Xu D., Pan L.S., Melissa Teo A.L., Ho W.M., Peter Lee V.S., Shabbir M., Institute of High Performance Computing, SG

The design of PZT actuated valveless membrane micropumps is a very complex process as it involves the knowledge of electro mechanics, solid mechanics and fluid mechanics. So far, there is no accurate, flexible and broadly [...]

Computational experiments on three-dimensional molecular diffusion in porous media

Alarcon V.J., Kingery W., Zhu J., Mississippi State University, US

Estimations of apparent diffusion coefficients usually consist of curve-fitting the output of one-dimensional models to experimental laboratory-measured data from porous aggregates shaped in different forms. In this research a computational exploration is presented on the [...]

Simulation of a Microfluidic Particle Concentrator and Separator

Chen C.C., Auner G.W., Industrial Technology Research Institute, TW & Wayne State University, US

A flow-through micro polymerase chain reaction (PCR) chip was optimized by using coupled multiphysics computational tools. Comprehensive simulations of temperature and flow profiles were presented for the denaturation, extension, and annealing zones on the flow-through [...]

Simulation and Optimization of a Flow-Through Micro PCR Chip

Kang J., Chen C.C., Smolinski J., Thomas R.A., Tucker J.D., Auner G.W., Industrial Technology Research Institute, TW & Wayne State University, US

We present a microfluidic particle concentrator and separator employing a large flow unit array. Each flow unit includes a nozzle, a sharp turn, a diffuser, and a flow dividing segment. After acceleration in the nozzle, [...]