Effect of thermoelastic damping on silicon, GaAs, diamond and SiC micromechanical resonators
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-05-01 |
| Journal | AIP Advances |
| Authors | Garuma Abdisa Denu, Jiao Fu, Zongchen Liu, Jibran Hussain Mirani, Hongxing Wang |
| Institutions | Xiāan Jiaotong University, Mattu University |
| Citations | 5 |
Abstract
Section titled āAbstractāThe effect of thermoelastic damping as a main dissipation mechanism in single crystalline silicon, GaAs, diamond, SiC and SiO2 micromechanical resonators are studied. Numerical simulation is performed to compare quality factors of the given materials. Results using Zenerās well-known approximation and recent developments of Lifshitz and Roukes models were used to model thermoelasticity effects. In the later model, the effect of thermal diffusion length is taken into account for determination of thermoelastic damping. Our results show that larger discrepancy is obtained between the two models for SiO2. The difference is pronounced when beam aspect ratio (L/w) is smaller. Such progresses will find potential applications in optimal design of high quality factor micrometer- and nanometer-scale electromechanical systems.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 1990 - The effect of thermoelastic internal friction on the Q of micromachined silicon resonators