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Novel Parameters for Rapid Blood Separation on a Centrifugal Platform

Gorkin R., Kim T-H., Madou M., Cho Y-K, University of California Irvine, US

Centrifugal microfluidic platforms are emerging as strong candidates for advanced integrated clinical diagnostics for such applications as automated immunoassay processing and nucleic acid analysis, however several implementation challenges limit their widespread use today. Purification of [...]

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 [...]

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 [...]

Flexible Micropost Arrays For Studying Traction Forces Of Vascular Smooth Muscle Cells

Cheng Q., Sun Z., Meininger G.A., Almasri M., University of Missouri, US

This paper describes the design, modeling, fabrication and characterization of micromachined arrays of high density 3-dimensional microposts fabricated using flexible silicone elastomers for studying traction forces generated by vascular smooth muscle cell. It also reports [...]

Triaxial Accelerometer for Placement Inside the Ear Canal

Kwa T., Pender G., Letterneau J., Endevco Corporation, Meggitt Sensing Systems, US

A second generation MEMS-based in-ear shock measurement system fitting deep into the ear canal has been developed to measure traumatic brain injury (TBI). It consists of the world’s smallest triaxial accelerometer die, a shielded flex [...]

Towards Microrobots with Insect-Like Dexterity

Clark J.V., Li F., Clark J.V., Purdue University, US

In this paper we analyze a pioneering mechanism ‘solid state muscles’ that facilitates insect-like dexterity for autonomous and robust microscale robotics. The results of our efforts are expected to at lead to the following microrobot [...]

Using MEMS as Self-Calibrating Force-Displacement Transducers: A Computational Study

Clark J.V., Li F., Lee H., Kadasia K., Purdue University, US

Accurate and precise measurements of forces and displacements are critical to the improved understanding, discovery, and prediction of micro- and nanoscale phenomena. Since geometric and material properties of MEMS vary from run to run, it [...]

Arrayed, Piezoelectrically-Actuated Mirrors and Gratings for Spectrometer

Chen S.J., Chi D., Lo J., Kim E.S., University of Southern California, US

This paper describes a technology for a compact spectrometer based on a 2D piezoelectric mirror and/or grating array. The piezoelectric mirror/grating array is composed of angularly movable, 2-D array of micromirrors/microgratings that is supported on [...]

High Fidelit Loud Microspeaker Based on PZT Bimorph Diaphragm

Choe Y., Chen S.J., Kim E.S., University of Southern California, US

This paper describes a microspeaker (composed of a 8mm square mechanically-polished PZT bimorph diaphragm and bulk-micromachined silicon top cover) that shows flat diaphragm displacement from DC to 11 kHz. A bimorph diaphragm is formed by [...]

Frequency-Interleaved MEMS Ultrasound Transducer

Chen S.J., Choe Y., Kim E.S., University of Southern California, US

This paper presents an ultra-sensitive, broad-bandwidth ultrasound transducer based on frequency interleaving of resonant transducers. A large number of cantilever-like diaphragm transducers with piezoelectric ZnO films have been optimally connected in series and parallel, so [...]