separation – Page 2 – TechConnect Briefs

Microfluidic Devices for Rapid Separation and Sensing of Cells

Bose S., Lee C.H., Karp J.M., Karnik R., Massachusetts Institute of Technology, US

We report a new method to separate cells in microfluidic devices by directing the trajectories of cells along asymmetric receptor edges. This approach relies on cell rolling, a physiological phenomenon involving transient interactions of the [...]

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 [...]

Production Technology for Nanofiber Filtration Media

Maly M., Petrik S., ELMARCO, CZ

The theoretical background and technical capabilities of the free liquid surface (nozzle-less) electrospinnig process is described. The process is the basis of both laboratory and industrial production machines known as NanospiderTM and developed by Elmarco [...]

Chirality Separation of single walled carbon nanotube using microfluidic

Han C-S, Shin D-H, Kim J-E, Shim H-C, Kang J-M, Baek S-H, Korea Insitute of Machinery & Materials, KR

Carbon nanotubes were separated by dielectrophoresis in a micro-fluidics chip, which is easy to scale-up the process. We used the H-filter with micro size channels, which have two inlets and two outlets. In this experiment, [...]

Nano-Engineering Of Magnetic Particles For Biocatalysis And Bioseparation

Yu C.H., Lo C.C.H., Yeung C.M.Y., Tam K., Tsang S.C., University of Reading, UK

Magnetic nanoparticles encapsulated in a thin coating as magnetic separable nano-vehicle for chemical species is a hot but challenging area. The stability of the small magnetic body remains a key issue. In this meeting, we [...]

Manufacturable nanoscale membranes – material development and biological separations

Gaborski T.R., Striemer C.C., Snyder J.L., Fang D.Z., Fauchet P.M., McGrath J.L., University of Rochester, US

We have developed a new class of ultrathin porous nanocrystalline silicon (pnc-Si) membranes using inexpensive and scalable silicon fabrication techniques. Pnc-Si is formed from a deposited amorphous silicon thin film, where nanoscale pores are introduced [...]

Nanoscale hydrophobic coatings for the separation of liquid mixtures

Truman P., Frenzel R., Longari N., Uhlmann P., Stamm M., Institute of Polymer Research, DE

Organofunctional nanoscale silane coatings are widely used to modify surface chemistry. Such coatings have many applications in micro- and nanofluidics because liquid motion on these scales is strongly influenced by capillary or wall effects. In [...]

Nano-Engineering Of Magnetic Particles For Biocatalysis And Bioseparation

Yu C.H., Lo C.C.H., Yeung C.M.Y., Tam K., Tsang S.C., University of Reading, UK

Magnetic nanoparticles encapsulated in a thin coating as magnetic separable nano-vehicle for chemical species is a hot but challenging area. The stability of the small magnetic body remains a key issue. In this meeting, we [...]

Separating Single-Walled Carbon Nanotubes by Length

Rauwald U., Schmidt D.J., Hauge R.H., Smalley R.E., Ziegler K.J., University of Florida, US

Single-walled carbon nanotubes (SWNTs) have received great attention because of their unique electronic and mechanical properties combined with their chemical stability. Typically, SWNTs are microns in length; however, intermediate lengths between small spheroidal fullerenes and [...]

Novel Magnetic Separable Nano-Carriers For Chemical Catalysis & Bio-Catalysis

Tsanga S.C., Tamb K., Gaoa X., Yua C.H., Yua K.K.M., Yeunga C.M.Y., Yua C.H., Yua K.K.M., University of Reading, UK

Separation of nanosize catalyst from product in liquid phase has been a major problem in industry. Thus the facilitated separation of a small magnetic body carrying catalytically active species is of a tremendous interest however; [...]