Influence of the Static Pre-Stress in Micro-Viscothermoelastic Resonators Based on Dual-Phase-Lagging Heat Conduction

Abstract EN

Thermal and mechanical relaxation times play vital roles in the values of the quality factor of micro/nanoresonators.

They can control the energy dissipation across the coupling of mechanical and thermal behavior.

In this paper, we introduce an analytical model that considers a pre-stress in a micro-viscothermoelastic resonator to modify the thermal and mechanical relaxation times and thus higher the quality factor.

The impacts of length scale and static pre-stress on the quality factor have been discussed.

The model expects that significant improvement in terms of quality factors is possible by tuning the pre-stress and the thermal and mechanical relaxation times parameters, and the isothermal value of frequency have significant effects on the thermal quality factor of the resonators.