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

Modeling & Simulation of Microsystems Chapter 5

Anomalous Thermomechanical Softening-Hardening Transitions in Micro-oscillators

Authors: T. Sahai, R. Bhiladvala, A. Zehnder

Affilation: Cornell University, United States

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-oscillators

ISBN: 978-1-4200-8505-1
Pages: 940
Hardcopy: $159.95