Papers – Page 24 – TechConnect Briefs

An Efficient Optical Propagation Technique for Optical MEM Simulation

Kurzweg T.P., Levitan S.P., Martinez J.A., Kahrs M., Chiarulli D.M., University of Pittsburgh, US

As designers become more aggressive in introducing optical components into micro-systems, additional capabilities are required for modeling and simulation tools. Common optical modeling techniques are not applicable for most optical micro-systems, and techniques that are [...]

FE-Simulation of Fast Switching Behavior of Magnetic Nanoelements

Fidler J., Schrefl T., Forster H., Suess D., Dittrich R., Vienna University of Technology, AT

Numerical micromagnetics is an essential tool to optimize magnetic storage media, spin electronic devices, such as MRAM and microsensors. The application of these devices requires a profound knowledge of the reversal mechanism. In nanostructured magnets [...]

Development of a MEMS Vertical Planar Coil Inductor

Chen J., Zou J., Liu C., Kang S-M, Agere Systems, US

This paper presents the results of the development of a vertical planar coil inductor. The planar coil inductor is first fabricated on silicon substrate and then assembled to the vertical position by using a novel [...]

Magnetic Properties over Several Length Scales: Micro-magnetic Modeling and Effective Medium Theory

Harter A.W., Mohler G., Moore R., Schultz J., Georgia Tech Research Institute, US

We combine micro-magnetic modeling with effective medium theory to predict the bulk properties of magnetic composites, in particular those of ferrite particles in a non-magnetic matrix. We verify our model using published measured data of [...]

The Microstructure and Computed Magnetic Properties of Nanoscaled Permanent Magnets

Zhang J.X., Zhang T.J., Zhang J.X., Zhang T.J., Cui K., Key State Laboratory of Die Technology, HUST, CN

Magnetic properties of a model nanocomposite magnet were calculated by means of computer simulation, and the effects of the amount of the soft magnetic phase on them were studied. The numerical results show that the [...]

Modeling a Growth Instability in Stressed and Ion-Implanted Doped Silicon

Phan A-V, Kaplan T., Gray L.J., Barvosa-Carter W., Aziz M.J., Oak Ridge National Laboratory, US

The effects of rate-enhancing dopants and externally applied stress on interfacial growth during silicon crystallization are modeled using advanced numerical methods. The boron doped crystalline Si is modeled as an isotropic linear elastic solid, and [...]

Capillary Interaction Between a Small Thin Solid Plate and a Liquid

Taher M., Saif T., University of Illinois Urbana-Champaign, US

Micromechanical systems are increasingly being used in micro fluidic and biological applications where solid-liquid interaction phenomena become important. Here, we present an analytical/computational study on the interaction force between a thin solid plate interfacing with [...]

Modeling Sub-Continuum Effects on the Mechanical Properties of Ultrathin Macromolecular Layers

King W.P., Goodson K.E., Stanford University, US

This paper makes progress on the prediction of mechanical modulus and mechanical relaxation time of macromolecular materials at small length and time scales. Fundamental studies of large molecules in confined geometries inform predictions of macroscopic [...]

A Study of the Behaviour of Magnetic Microactuators

Flynn M., Gleeson J.P., University College Cork, IR

The behavior of an idealized magnetic microactuator is modeled and analyzed. A two parameter mass-spring model is shown to exhibit a bifurcation from one to three steady states as the geometry of the device is [...]

Magnetohydrodynamic Micromixing

Gleeson J.P., West J., University College Cork, IR

Modeling of magnetohydrodynamic (MHD) pumping in an annular microchannel is reduced to a two-dimensional Poisson equation for the azimuthal velocity. A method for enhancing the mixing of fluids is proposed, and is proven to yield [...]