Micro & Bio Fluidics, Lab-on-Chip – Page 13

Synthesis of fine Pharmaceutical Particles by a Gaseous Antisolvent Mechanism

Bakhbakhi Y., Alfadul S.M., chafidz A., Ajbar A., King Saud University, SA

Nonconventional processing techniques can lead to the development of materials with unique chemical, physical or mechanical characteristics that make them suitable for specialized applications. One such technique is synthesizing with supercritical fluids, where the unique [...]

High Deborah number flows through 3D contractions at the microscale

Oliveira M.S.N., Afonso A.M., Pinho F.T., Alves M.A., FEUP - Faculdade de Engenharia da Universidade do Porto, PT

In this work, we report a rich sequence of elastic transitions captured experimentally using a solution of polyethylene oxide in a water/glycerol mixture that exhibits shear-thinning and viscoelastic behavior. The experiments were carried out in [...]

Superhydrophobic porous silicon surfaces

Bolognesi G., University of Roma “La Sapienza”, IT

In this paper, we present a novel inexpensive technique to produce superhydrophobic surfaces from porous silicon. Superhydrophobic surfaces are a key technology for their ability to reduce friction losses in microchannels and their self cleaning [...]

Experimentally-validated theory for the effective zeta potential in microchannel with gate electrodes

Bonotto F., Lenzi A., Viola F., Napoli M., Frey J., Pennathur S., university of california, santa barbara, US

In this work we develop an approach to solve for the effective zeta potential in a channel with nonuniform zeta potentials, such as metal gate electrodes in the channel network for flow control applications. Specifically, [...]

Accommodation coefficient investigation in rectangular micro-channels for large Knudsen number range

Hadj Nacer M., Graur I., Perrier P., Université de Provence, FR

Experimental and numerical investigations on the flow through rectangular microchannel are presented. The constant volume technique was used to measure the mass flow rate through rectangular microchannel which had gold deposits on the interior surfaces. [...]

An Experimental Determination of Temperature-Dependent Thermal Conductivity of Cyclohexane-Based Nanofluids

Fan L., Khodadadi J.M., Auburn University, US

In extending their applicability , utilization of nanofluids as superior solid-liquid phase change materials (PCM) for thermal energy storage has been proposed recently. This extension of potential utility of nanofluids will require thermal conductivity measurements [...]

Thermal Conductivity and Viscosity Measurements of Water-Based Silica Nanofluids

Bobbo S., Colla L., Scattolini M., Agresti F., Barison S., Pagura C., Fedele L., CNR-Consiglio Nazionale delle Ricerche, IT

Nanofluids are a new class of fluids that could significantly improve the thermal properties of fluids used as thermal vectors. They are obtained by dispersing in common fluids (water, glycol, oil) solid nanoparticles (diameter <100 [...]

Design of Optimized Microfluidic Devices for Viscoelastic Fluid Flow

Alves M.A., Universidade do Porto - Faculdade de Engenharia, PT

In this work we present a fully automated procedure for the design of microfluidic devices with optimal performance. The proposed approach combines an in-house finite-volume viscoelastic flow solver, an optimizer, and an automatic mesh generation [...]

Modeling Nanoscale Plasmon-assisted Bubble Nucleation and Applications

Furlani E.P., Swihart M.T., Litchinitser N., Delametter C.N., Carter M., University at Buffalo, US

Metallic nanoparticles exhibit a plasmon resonance at optical frequencies that enables efficient conversion of optical to thermal energy at the nanoscale. This photothermal coupling can be leveraged for various applications using femtosecond-pulsed laser illumination tuned [...]

Design, Simulation, and Prototyping of an Impulse Turbine for Biomedical Applications

Cabra H., University of South Florida, US

An impulse bio-turbine with circular inlet/outlet area is presented. The system was designed using a scaled impulse macro turbine model, which was modified in size and shape to facilitate transformative integration in implantable biomedical devices [...]