Papers – Page 44 – TechConnect Briefs

Design of a normally closed piezoelectric micro valve

Zähringer S., Menacher M., Kirchner P., Schwesinger N., Technische Universitaet Muenchen, DE

In a previously published paper a piezoelectric actuator using surface electrodes was investigated in a macro-microscopic approach. Bases on those results a normally closed piezoelectric micro valve was devoloped. Therefore the electrode structures were minimized [...]

Transitions Between Epithelial and Mesenchymal States in Microfluidic Platform: Acquisition of Malignant and Stem Cell Traits

Aref A.R., Huang R.Y.J., Kang W., Jing S.W., Thiery J.-P., Kamm R.D., SMART, SG

Epithelial–mesenchymal transition (EMT) is an indispensable mechanism during morphogenesis, as without mesenchymal cells, tissues and organs will never be formed. Transitions between epithelial and mesenchymal states have crucial roles in embryonic development and without EMT, [...]

Vapor-assisted bonding of poly(dimethylsiloxane) and silicon-based substrates

Sofla A.Y.N., Martin C., University of Toronto, CA

We present a novel method to reliably bond PDMS to glass, Si, SiO2 and PDMS. In this vapor-assisted method the surface of the PDMS is first brought into contact with the substrate. The PDMS-substrate structure [...]

Continuous Separation of Non-Magnetic Particles through Negative Magnetophoresis inside Ferrofluids

Zhu T., Marrero F., Mao L., The University of Georgia, US

We present a simple, effective and label-free continuous flow non-magnetic microparticle separation scheme in a microfluidic device under static magnetic fields. The separation process is based on negative magnetophoresis and uses water-based ferrofluids. We exploit [...]

Experimental Study of Drying/Evaporation in an Effective 2D Porous Medium

Yiotis A.G., Tsimpanogiannis I.N., Stubos A.K., National Center for Scientific Research “Demokritos”, GR

Liquid-to-gas phase change, where the mass transfer that drives the process occurs in the gas phase, and the subsequent growth of the produced gas phase within a porous medium, is involved in a wide variety [...]

Slip boundary conditions in nanofluidics from the molecular theory of solvation

Kobryn A.E., Kovalenko A., National Institute for Nanotechnology, CA

We propose the first-ever derivation and calculation of the hydrodynamic slip length from the first principles of statistical mechanics, based on a combination of linear response theory and equilibrium molecular theory of solvation. The slip [...]

Mobility Effects on WCDMA Receivers in Indoor Areas

Alhloul S., Ahmad Alzahrani F., Albaha University, SA

This Paper presents important results in analysing the effects of mobility on WCDMA receivers. It takes a completly different apprach in translating the effects of mobility on WCDMA receivers. The mobility here is translated to [...]

Digital signal processing post-hybridization of DNA Biosensor

Afuwape S.A., National University, San Diego, US

The non-label DNA biosensor detects hybridization due to enhanced biomolecules surface-binding specifically on glass or plastic platform, now broadly extended to active surface such as field-effect transistors with scalability of the platform gate. The latter [...]

Modelling of Low Level Ionic Current Sensing Micro-tip

Memon S., Balachandran W., Brunel Univeristy, West London, UK

The authors of this paper are developing an appropriate micro/nano array sensors that is capable of sensing ionic currents in sweat fluid secreted from sweat pores on the finger ridges. In this paper we present [...]

Simple vertical velocity measurement system for different use

Husak M., Jakovenko J., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

The measurement of vertical velocity is necessary for different use. The solutions are based on principle of evaluating the change of an atmospheric pressure. The dependence which evaluates the vertical velocity is derived from the [...]