Nano Science and Technology Institute
Nanotech 2008 Vol. 3
Nanotech 2008 Vol. 3
Nanotechnology 2008: Microsystems, Photonics, Sensors, Fluidics, Modeling, and Simulation - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, Volume 3
Chapter 5: Modeling & Simulation of Microsystems

Anomalous Thermomechanical Softening-Hardening Transitions in Micro-oscillators

Authors:T. Sahai, R. Bhiladvala, A. Zehnder
Affilation:Cornell University, US
Pages:525 - 528
Keywords:nonlinear dynamics, resonance, softening, hardening, optical detection
Abstract:This work documents and explains a counter-intuitive nonlinear phenomenon, where the laser-detected resonant motion of forced, micromechanical oscillators can be tuned from softening to hardening by increasing the laser power incident on a prestressed silicon nitride oscillator. This tuning is explained by a thermo-mechanical model in which linear and nonlinear stiffness contributions have opposing responses to temperature change.
Anomalous Thermomechanical Softening-Hardening Transitions in Micro-oscillatorsView PDF of paper
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