US – Page 179 – TechConnect Briefs

System for Measuring Drop Volume and Consistency in Lab-on-Chip Applications

Kipman Y., Mehta P., ImageXpert Inc., US

A machine vision based system has been developed for measuring in-channel characteristics of droplets for lab-on-chip microfluidic applications. The small, fully integrated system can be used in R&D and in production and combines a high-powered [...]

Hot spots active-cooling micro-channel heat sink device, using electro-osmotic flow

Al-Rjoub M.F., Roy A.K., Ganguli S., Banerjee R.K., University of Cincinnati, US

In this pilot study a micro-scale heat exchanger/ spreader was designed and tested. This device is dedicated for the thermal management of microchip hot spots. The basic design consisted of an array of microchannels etched [...]

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, [...]

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 [...]

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 [...]

Use of Silica Nanosprings in an Enzyme-Based Continuous Flow Reactor

Hyatt D.C., Cantrell T., Yahvah M., Grant Norton M., McIlroy D.N., Corti G., GoNano Technologies, Inc., US

Enzyme catalyzed reactions have several advantages over conventional synthetic reactions. The use of enzymes is rapidly increasing in industry. The specificity of enzymes has considerable potential for the production of complex pharmaceutical compounds. Incorporating enzyme [...]

Capillary Electrophoresis in Nanofluidic Channels

Atzberger P.J., Gibou F., Pennathur S., university of california, santa barbara, US

Electrophoretic separation in nanofluidic channels exhibits significant differences with microfluidics. We discuss a theoretical / experimental collaboration investigating particle separation by electropohoresis in nanochannels. Recent experimental results in the laboratory of our collaborator Dr. Pennathur [...]

Using nanofluids to enhance the operation of solar energy systems

Otanicar T., Loyola Marymount University, US

Nanofluids have garnered a lot of attention for their potential to modify thermal properties, particularly the thermal conductivity. While these modifications have been heavily investigated within the heat transfer and materials community, nanofluids additionally offer [...]

Investigation of Lead-free Nanosolder Reflow and Wettability Property for Electronics/Nanoelectronics Assembly and Packaging

Gao F., Gu Z., Shina S., Morose G., Eliason P., Farrell R., University of Massachusetts-Lowell, US

The current demand for high-performance interconnects in advanced packaging is resulting in dramatic scaling down of the electronics packaging feature size from microscale to nanoscale. Novel and/or enhanced interconnection and packaging techniques have to be [...]