nonlinear – TechConnect Briefs

A novel high-sensitivity resonant viscometer realised through the exploitation of nonlinear dynamic behaviour

Waugh W.H., Gallacher B.J., Burdess J.S., Newcastle University, UK

By suitably harmonically oscillating a clamped-clamped beam immersed in fluid, it is possible to induce nonlinear dynamic behaviour. Singular jump points occur in the frequency response function, the separation of which is dependent on the [...]

Linear and Nonlinear Optical Properties of Palladium Nanoparticle Reinforced Fluoropolymer Composites

Spicer J., See K., Katsumi Y., Zhang D., Brupbacher J., Vargo T., John's Hopkins University, US

The linear optical properties of a functionally graded, palladium nanoparticle reinforced fluorinated ethylene polymer matrix nanocomposite (PMNC) were investigated in this work. Synthesized through repeated infusions of a palladium organometallic precursor gas into an insulating, [...]

Analysis of the Nonlinear Behavior of a MEMS Variable Capacitor

Innocent M., Wambacq P., Donnay S., Tilmans H., Engels M., DeMan H., Sansen W., IMEC, BE

Today’s wireless communication systems often require a high linearity for the RF building blocks. One of these blocks can be a tunable LC filter using MEMS variable capacitors (varicaps). In these filters, the varicaps are [...]

Nonlinear Mechanics of Suspension Beams for a Micromachined Gyroscope

Davis W.O., Pisano A.P., University of California-Berkeley, US

We present a method for the calculation of the coefficients of cubic stiffening for tether-suspended micromachined systems. The analysis is based on a nonlinear rod theory, and enables the prediction of the maximum achievable motion [...]

Techniques for Coupled Circuit and Micromechanical Simulation

Chen J., Kang S-M, University of Illinois at Urbana-Champaign, US

This paper details advanced simulation techniques for efficiently determining system behavior of integrated microsystems that contains both circuit elements and micromechanical ones. Techniques for building reduced-order dynamical models for coupled energy domain non-liner (both weakly [...]