Papers – Page 257 – TechConnect Briefs

Hydrodynamically Confined Microfluidics for Single Cell Measurements

Turner K.T., Christ K.V., University of Pennsylvania, US

Microfluidics have proven to be a useful tool in cell biology as they allow for precise control of chemistry and hydrodynamic loads at the scale of single cells. Channel-based microfluidics can be difficult to employ [...]

Syringe-Assisted Point-Of-Care Pumping

Xu L., Lee H., Oh K.W., SUNY at Buffalo, US

By utilizing the high gas permeability of PDMS, a simple syringe-assisted micropumping method is presented. A constant, controllable pumping rate ranging from 0.3 to 4 nl/s was achieved by controlling the gap distance (g) and [...]

Reduction of the Hydrophobicity of Thiol-ene Microfluidic Devices Using an Adsorbed Polymeric Coating

Cretich M., Zilio C., Chiari M., Consiglio Nazionale delle Ricerche, IT

Thiol-ene based materials have gained a considerable interest in the field of micro and nano fluidics because of their physico-chemical properties and their polymerization characteristics. Unfortunately, the hydrophobic nature of this material represents a considerable [...]

Investigation of the Concentration Polarization effect on Nanoparticles using radial micro-nanofluidic devices

Aïzel K., Fouillet Y., Pudda C., Chabrol C., Texier-Nogues I., CEA-LETI, FR

We perform ICP using radial silicon nanojunction geometries fabricated by single standard silicon microfabrication for proof of concept concentration operation over 50nm polystyrene nanobeads.We call the devices “Ring like devices” because of the circular shape [...]

Exploiting structural polarization effects for the AC-electrokinetic manipulation of objects and media in cell chips

Gimsa J., Stubbe M., University of Rostock, DE

AC fields induce polarization charges at the structural interfaces inside inhomogeneous media (Maxwell-Wagner polarization). In suspensions or emulsions of micro and nano objects such as particles, oil droplets, air bubbles and biological cells, these structures [...]

Numerical Analysis of Microfluidic Magnetic Bead Separation Utilizing an Integrated Array of Magnetic Elements Magnetized by a Homogenous Bias Field

Khashan S.A., Furlani E.P., United Arab Emirates University and University at Buffalo, US

Magnetic particles are finding increasing use in microfluidic and lab-on-a-chip systems especially for bioapplications where they are commonly used to label, sort and separate target biomaterials from a sample. In this presentation we analyze the [...]

Magnetic Nanoparticle Dynamics and Assembly Phenomena in External Magnetic Fields

Xue X., Furlani E.P., SUNY-Buffalo, US

The interest in magnetic nanoparticles and ferrofluids has grown substantially in recent years as their applications continue to proliferate. Current applications are diverse and include the transport of biomolecules and therapeutic drugs [1], gene transfection [...]

Secondary Microflows in Electrokinetic Transport with Hydrodynamic Slippage Effect

Kim K.S., Chun M.-S., Byun Y.T., Woo D.H., Korea Institute of Science and Technology (KIST), KR

The curved microchannel is frequently encountered in the lab-on-chips because it provides a convenient way for increasing channel length per unit area. The behavior of electrokinetic flow with curvature-induced secondary motion was explored based on [...]

Evanescent wave-based particle tracking technique for velocity distribution in extended nanochannel

Kazoe Y., Iseki K., Mawatari K., Kitamori T., The University of Tokyo, JP

We developed a flow measurement technique of velocity distribution in extended nanochannel (10- 1000 nm), using fluorescent tracer nanoparticles and the evanescent wave which penetrates into a liquid medium with an exponential decay from the [...]

Repeated Duplication in EHD Line Patterning on a Non-Conductive Substrate Based on Controlling the Polarity of Applied Voltages

Son S., Lee S., Choi J., Sungkyunkwan University, KR

This paper addresses the EHD printing of a high aspect ratio of metal lines as a means of forming a high conductivity of metal lines. As stated earlier, EHD printing is advantageous over conventional inkjet [...]