Papers – Page 14 – TechConnect Briefs

Particle Transport in Magnetophoretic Microsystems

Furlani E.P., University at Buffalo, US

Magnetophoretic microsystems are finding increasing use in biotechnology and biomedicine for applications such as bioseparation and immuno-assays. These microfluidic systems typically contain embedded elements that produce a magnetic field distribution within a microchannel. This applied [...]

A Hydrophobicity Controlled Nanofluidic Pump

Liu H., Dharmatilleke S., Tay A.A.O., Institute of Materials Research and Engineering, SG

interfacial energies in the system. Many methods for modulation of surface tension to manipulate fluids in micro or nano scale have been studied and reported, including the mechanical (surface roughness effect), chemical (electrochemical effect), opto- [...]

A Solid Electrolyte Valve for Micro/Nano-fluidics

Yang Y., Zhang X., Kozicki M.N., Chae J., Arizona State University, US

This paper describes recent work on a valve to regulate liquid flow in micro/nano-fluidic channels using electrodeposited nanostructures on a solid-state AgGeSe electrolyte. The valve utilizes the extremely rough surface morphology of the electrodeposits to [...]

Analysis of an Electrostatically Actuated MEMS Drop Ejector

Furlani E.P., Eastman Kodak Company, US

MEMS are finding increasing use for applications that require the controlled generation and delivery of picoliter-sized droplets. Common applications include biomedical and biochemical microdispensing and most notably, ink jet printing. Micro-droplets can be produced as [...]

Design Simulations of a Micropump with Multiple Actuating Mechanisms

Koombua K., Pidaparti R.M., Virginia Commonwealth University, US

This paper presented the design simulations of a valveless micropump with novel multiple vibrating membranes as actuators and investigated its performance characteristics. The designed PDMS micropump consists of three nozzle/diffuser elements with vibrating membranes that [...]

Two-Phase Convective Heat Transfer in Microchannels

Lin C.Y., Hsieh S.-S., Chen J.H., National Sun Yat-Sen University, TW

Experiments were conducted to investigate subcooling flow boiling in 75 parallel microchannels (L=30 mm) having 200 μm (W) x 100 μm (H) cross-section with/without structured reentrant angle ( 0°、60°、90°and 120°). Boiling inceptions, flow morphologies, critical [...]

Concentration Tuned Interactions and Structures in One Gradient AC Electric Field

Qiu Z., Tada S., Shen Y., City University of New York, US

External field-controlled particle structure growth is an active area in micron- or nano- material assembly. We will present preliminary experimental results about how to use particle concentration to tune interactions and structures in one gradient [...]

Engineered Nanostructures for High Thermal Conductivity Substrates

Varanasi K.K., Chamarthy P., Chauhan S., de Bock P., Kulkarni A., Mandrusiak G., Rush B., Russ B., Denault L., Weaver S., Gerner F., Leland Q., Yerkes K., Massachusetts Institute of Technology, US

In the DARPA Thermal Ground Plane (TGP) program, GE and its partners, the University of Cincinnati and the Air Force Research Laboratory, are developing a new thermal technology that will enable a monumental thermal technological [...]

Inkjet ink containing inorganic doped semiconductor (ZnS:Mn) nanoparticle pigments

Angelo P.D., Farnood R.R., University of Toronto, CA

A jettable inkjet ink containing dispersed inorganic semiconductor (ZnS:Mn) pigments has been prepared using colloidal synthesis. This ink was deposited using an inkjet printer to form printed lines of luminescent material. Different binder polymers were [...]

Methods & Results from the Cambridge Inkjet Research Centre

Hoath S.D., Martin G.D., Hutchings I.M., University of Cambridge UK, UK

We outline the methods and tools of fluid characterization, drop visualization and drop formation physics that are used at Cambridge. We present recent results and interpretation for drop on demand inkjet printing of some model [...]