CA – Page 29 – TechConnect Briefs

Modeling, Fabrication and Experiment of a Novel Lateral MEMS IF/RF Filter

Motiee M., Khajepour A., Mansour R.R., University of Waterloo, CA

MEMS based mechanical resonators and filters have shown promising characteristics in achieving high Q values and good stability. This paper introduces a novel V-shape coupling element that is used to mechanically couple two clamped-clamped MEMS [...]

Design and Modeling of a 3D Micromachined Accelerometer

Ghafari S.H., Golnaraghi M.F., Mansour R., University of Waterloo, CA

This paper presents the operation principles, modeling methods, design, and fabrication considerations of a 3-D micromachined accelerometer. MEMS technology in this work combines small size, low cost and low power consumption to create a sensor [...]

RF Noise Models of MOSFETs- A Review

Asgaran S., Jamal Deen M., McMaster University, CA

A thorough study of high frequency MOSFET noise compact modeling with emphasis on channel thermal noise modeling is presented. Although the modeling of MOSFET noise dates back to many years ago, the enhanced noise generated [...]

A MEMS Tunable Inductor

Zine-El-Abidine I., Okoniewski M., McRory J.G., University of Calgary and TRLabs, CA

This paper reports a single-wafer micromachined radiofrequency (RF) inductor that can be integrated in a conventional RFIC device. The inductor achieved a quality factor greater than 9 at 5Ghz and a self-resonance frequency well above [...]

Geometrical Effects in Mechanical Characterizing of Microneedle for Biomedical Applications

Aggarwal P., Johnston C., University of Calgary, CA

This paper discusses the design and implementation of MEMS microneedle with emphasis on integrated functionality for sensing the forces. The idea is based on the requirements of strength, robustness, and minimal insertion pain and tissue [...]

Dielectrophoresis (DEP) of Cells and Microparticle in PDMS Microfluidic Channels

Kanagasabapathi T.T., Backhouse C.J., Kaler K.V.I.S., University of Calgary, CA

Dielectrophoresis (DEP) [1] The behavior of polarized, neutral particles to the non-uniform electric field has been successfully applied for the levitation and subsequent isolation of biological cells and other micron-sized inorganic particles [2, 3]. This [...]

Modeling Water Uptake of Proton Exchange Membranes

Berg P., Promislow K., Simon Fraser University, CA

Water content in Nafion membranes of proton exchange membranes (PEM) is crucial to its functionality. The adsorption of liquid water occurs on a time scale of seconds, while the desorption (drying) time scale is on [...]

Mathematical Modeling of Water Management in PEM Fuel Cells

Berg P., Promislow K., Stockie J., Wetton B., Simon Fraser University, CA

Liquid water is fundamental to Polymer Electrolyte Membrane fuel cells (PEMFC). Its influence, both beneficial and parasitic, is measured on time scales from femto-seconds to hours, on length scales from Angstroms to centimeters. Its role [...]

Surface Shaping by Ion Beams at Grazing Incidence: Simulations vs. Experiment

Stepanova M., Dew S.K., University of Alberta, CA

Miniaturization of electronic technologies highlights special approaches such as selforganization of nanostructures. Particularly, surface etching by ion beams at grazing incidence is of interest for applications, because it provides pronounced submicron size, self-organized ripples. Formation [...]

The Electronic Properties and L3 XANES of Au and Nano-Au

Yiu Y.M., Zhang P., Sham T.K., University of Western Ontario, CA

The electronic properties of Au crystal and nano Au have been investigated by theory and experiment. Molecularly capped nano-Au was synthesized using the two-phase method. Au nano-particles have been characterized by X-Ray Diffraction (XRD) and [...]